| This page contains a link using the tel: protocol. This is not supported by desktop browsers and iPads.
| Internet Explorer
Firefox
Safari
Opera
Chrome
| 188 |
| This page contains some spelling errors.
honourary | | 123 |
| Value of fixed attribute "version" not equal to default.
| | 1 |
| End tag for "br" omitted, but OMITTAG NO was specified.
| | 155 155 |
| End tag for "img" omitted, but OMITTAG NO was specified.
| | 62 88 138 139 153 |
| End tag for "input" omitted, but OMITTAG NO was specified.
| | 51 52 53 54 |
| End tag for "link" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| End tag for "meta" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| This page has markup errors, causing screen readers to miss content.
| WCAG2 A F70
| 51 155 62 1 1 |
| This page has no doctype which triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Title tag is too long for Bing. Bing recommends using titles up to 65 characters long.
The title is 97 characters long.
| Bing
| 1 |
| Title tag is too long for Yahoo. Yahoo recommends limiting your page title to 67 characters.
The title is 97 characters long.
| Yahoo
| 1 |
| Use text links rather than image links. In general, text links are more easily recognized as clickable.
| | 139 153 138 |
| Omitting IMG WIDTH or HEIGHT attributes means page text jumps about as images load.
| | 62 |
| Title is longer than 64 characters. W3C recommends titles are no longer than 64 characters.
| W3C Style Guide
| 1 |
| There is no attribute "about".
| | 1 98 |
| There is no attribute "content".
| | 111 |
| There is no attribute "property".
| | 1 105 111 188 |
| There is no attribute "rel".
| | 170 |
| There is no attribute "typeof".
| | 88 98 |
| No DOCTYPE found! Checking with default HTML or XHTML document type.
| | 1 |
| Create pages that validate to W3C recommendations. This document contains markup errors.
6 markup errors found on this page.
| WCAG1 AA 3.2
| 1 |
| No meta description tag found. Use a description tag that accurately describes the contents of a web page.
| Yahoo
Google
Bing
| 1 |
| Use bold text sparingly - for one or two words or a short phrase.
| | 110 155 |
| Create data entry fields that are large enough to show all of the entered data without scrolling. One study has shown that search fields should be at least 35-40 characters long to accommodate 95% percent of search terms.
| | 51 |
| This page has malformed tags which IE8 and later treat differently from earlier versions of IE.
| Internet Explorer
| 51 155 62 1 1 |
| Google recommends using well-formed HTML code in your webpages. This page has mismatched tags.
| Google
| 51 155 62 1 1 |
| Use italic text sparingly - for one or two words or a short phrase.
| | 110 |
| No search keywords are set in SortSite, so no keyword optimization rules have been run.
| | 1 |
| This page contains a link using the tel: protocol. This is not supported by desktop browsers and iPads.
| Internet Explorer
Firefox
Safari
Opera
Chrome
| 188 |
| This page contains some spelling errors.
honourary | | 123 |
| Value of fixed attribute "version" not equal to default.
| | 1 |
| End tag for "br" omitted, but OMITTAG NO was specified.
| | 155 155 |
| End tag for "img" omitted, but OMITTAG NO was specified.
| | 62 88 138 139 153 |
| End tag for "input" omitted, but OMITTAG NO was specified.
| | 51 52 53 54 |
| End tag for "link" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| End tag for "meta" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| This page has markup errors, causing screen readers to miss content.
| WCAG2 A F70
| 51 155 62 1 1 |
| This page has no doctype which triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Title tag is too long for Bing. Bing recommends using titles up to 65 characters long.
The title is 97 characters long.
| Bing
| 1 |
| Title tag is too long for Yahoo. Yahoo recommends limiting your page title to 67 characters.
The title is 97 characters long.
| Yahoo
| 1 |
| Use text links rather than image links. In general, text links are more easily recognized as clickable.
| | 139 153 138 |
| Omitting IMG WIDTH or HEIGHT attributes means page text jumps about as images load.
| | 62 |
| Title is longer than 64 characters. W3C recommends titles are no longer than 64 characters.
| W3C Style Guide
| 1 |
| There is no attribute "about".
| | 1 98 |
| There is no attribute "content".
| | 111 |
| There is no attribute "property".
| | 1 105 111 188 |
| There is no attribute "rel".
| | 170 |
| There is no attribute "typeof".
| | 88 98 |
| No DOCTYPE found! Checking with default HTML or XHTML document type.
| | 1 |
| Create pages that validate to W3C recommendations. This document contains markup errors.
6 markup errors found on this page.
| WCAG1 AA 3.2
| 1 |
| No meta description tag found. Use a description tag that accurately describes the contents of a web page.
| Yahoo
Google
Bing
| 1 |
| Use bold text sparingly - for one or two words or a short phrase.
| | 110 155 |
| Create data entry fields that are large enough to show all of the entered data without scrolling. One study has shown that search fields should be at least 35-40 characters long to accommodate 95% percent of search terms.
| | 51 |
| This page has malformed tags which IE8 and later treat differently from earlier versions of IE.
| Internet Explorer
| 51 155 62 1 1 |
| Google recommends using well-formed HTML code in your webpages. This page has mismatched tags.
| Google
| 51 155 62 1 1 |
| Use italic text sparingly - for one or two words or a short phrase.
| | 110 |
| This page contains a link using the tel: protocol. This is not supported by desktop browsers and iPads.
| Internet Explorer
Firefox
Safari
Opera
Chrome
| 179 |
| Value of fixed attribute "version" not equal to default.
| | 1 |
| End tag for "br" omitted, but OMITTAG NO was specified.
| | 131 146 146 |
| End tag for "img" omitted, but OMITTAG NO was specified.
| | 61 144 |
| End tag for "input" omitted, but OMITTAG NO was specified.
| | 50 51 52 53 |
| End tag for "link" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| End tag for "meta" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| This page has markup errors, causing screen readers to miss content.
| WCAG2 A F70
| 131 50 61 1 1 |
| This page has no doctype which triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Title tag is too long for Bing. Bing recommends using titles up to 65 characters long.
The title is 92 characters long.
| Bing
| 1 |
| Title tag is too long for Yahoo. Yahoo recommends limiting your page title to 67 characters.
The title is 92 characters long.
| Yahoo
| 1 |
| Use text links rather than image links. In general, text links are more easily recognized as clickable.
| | 144 |
| Omitting IMG WIDTH or HEIGHT attributes means page text jumps about as images load.
| | 61 |
| Title is longer than 64 characters. W3C recommends titles are no longer than 64 characters.
| W3C Style Guide
| 1 |
| There is no attribute "about".
| | 1 96 |
| There is no attribute "content".
| | 113 |
| There is no attribute "property".
| | 1 103 113 179 |
| There is no attribute "rel".
| | 161 |
| There is no attribute "typeof".
| | 96 |
| No DOCTYPE found! Checking with default HTML or XHTML document type.
| | 1 |
| Create pages that validate to W3C recommendations. This document contains markup errors.
6 markup errors found on this page.
| WCAG1 AA 3.2
| 1 |
| No meta description tag found. Use a description tag that accurately describes the contents of a web page.
| Yahoo
Google
Bing
| 1 |
| Use bold text sparingly - for one or two words or a short phrase.
| | 146 |
| Create data entry fields that are large enough to show all of the entered data without scrolling. One study has shown that search fields should be at least 35-40 characters long to accommodate 95% percent of search terms.
| | 50 |
| This page has malformed tags which IE8 and later treat differently from earlier versions of IE.
| Internet Explorer
| 131 50 61 1 1 |
| Google recommends using well-formed HTML code in your webpages. This page has mismatched tags.
| Google
| 131 50 61 1 1 |
| This page contains a link using the tel: protocol. This is not supported by desktop browsers and iPads.
| Internet Explorer
Firefox
Safari
Opera
Chrome
| 171 |
| This page contains some spelling errors.
sessional | | 110 |
| Value of fixed attribute "version" not equal to default.
| | 1 |
| End tag for "br" omitted, but OMITTAG NO was specified.
| | 138 138 |
| End tag for "img" omitted, but OMITTAG NO was specified.
| | 61 136 |
| End tag for "input" omitted, but OMITTAG NO was specified.
| | 50 51 52 53 |
| End tag for "link" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| End tag for "meta" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| This page has markup errors, causing screen readers to miss content.
| WCAG2 A F70
| 50 138 61 1 1 |
| This page has no doctype which triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Use text links rather than image links. In general, text links are more easily recognized as clickable.
| | 136 |
| Omitting IMG WIDTH or HEIGHT attributes means page text jumps about as images load.
| | 61 |
| There is no attribute "about".
| | 1 96 |
| There is no attribute "content".
| | 113 |
| There is no attribute "property".
| | 1 103 113 171 |
| There is no attribute "rel".
| | 153 |
| There is no attribute "typeof".
| | 96 |
| No DOCTYPE found! Checking with default HTML or XHTML document type.
| | 1 |
| Create pages that validate to W3C recommendations. This document contains markup errors.
6 markup errors found on this page.
| WCAG1 AA 3.2
| 1 |
| No meta description tag found. Use a description tag that accurately describes the contents of a web page.
| Yahoo
Google
Bing
| 1 |
| Use bold text sparingly - for one or two words or a short phrase.
| | 138 |
| Create data entry fields that are large enough to show all of the entered data without scrolling. One study has shown that search fields should be at least 35-40 characters long to accommodate 95% percent of search terms.
| | 50 |
| This page has malformed tags which IE8 and later treat differently from earlier versions of IE.
| Internet Explorer
| 50 138 61 1 1 |
| Google recommends using well-formed HTML code in your webpages. This page has mismatched tags.
| Google
| 50 138 61 1 1 |
| This page contains a link using the tel: protocol. This is not supported by desktop browsers and iPads.
| Internet Explorer
Firefox
Safari
Opera
Chrome
| 1756 |
| Value of fixed attribute "version" not equal to default.
| | 1 |
| End tag for "br" omitted, but OMITTAG NO was specified.
| | 1723 1723 |
| End tag for "img" omitted, but OMITTAG NO was specified.
| | 61 106 125 144 163 182 201 220 239 258 277 296 315 334 353 372 391 410 429 448
...
|
| End tag for "input" omitted, but OMITTAG NO was specified.
| | 50 51 52 53 |
| End tag for "link" omitted, but OMITTAG NO was specified.
| | 1 |
| End tag for "meta" omitted, but OMITTAG NO was specified.
| | 1 1 |
| This page has markup errors, causing screen readers to miss content.
| WCAG2 A F70
| 50 1723 61 1 1 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 83 147 755 1211 166 318 660 793 869 983 356 888 1135 1154 1173 1268 1477 679 185 413
...
|
| This page has no doctype which triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Use text links rather than image links. In general, text links are more easily recognized as clickable.
| | 1721 |
| Omitting IMG WIDTH or HEIGHT attributes means page text jumps about as images load.
| | 61 |
| There is no attribute "about".
| | 97 |
| There is no attribute "content".
| | 109 |
| There is no attribute "datatype".
| | 100 |
| There is no attribute "property".
| | 100 102 109 1756 |
| There is no attribute "rel".
| | 106 109 |
| There is no attribute "resource".
| | 106 109 |
| There is no attribute "typeof".
| | 97 106 |
| No DOCTYPE found! Checking with default HTML or XHTML document type.
| | 1 |
| Create pages that validate to W3C recommendations. This document contains markup errors.
6 markup errors found on this page.
| WCAG1 AA 3.2
| 1 |
| No meta description tag found. Use a description tag that accurately describes the contents of a web page.
| Yahoo
Google
Bing
| 1 |
| Use bold text sparingly - for one or two words or a short phrase.
| | 1723 |
| Create data entry fields that are large enough to show all of the entered data without scrolling. One study has shown that search fields should be at least 35-40 characters long to accommodate 95% percent of search terms.
| | 50 |
| This page has malformed tags which IE8 and later treat differently from earlier versions of IE.
| Internet Explorer
| 50 1723 61 1 1 |
| Google recommends using well-formed HTML code in your webpages. This page has mismatched tags.
| Google
| 50 1723 61 1 1 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 8 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 1 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 84 32 90 56 82 |
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 14 22 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 6 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Required attribute "ALT" not specified.
| | 8 |
| No document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
| | 1 |
| End tag for element "ADDRESS" which is not open.
| | 205 206 |
| This link is broken. The link target could not be loaded due to an HTTP error.
Broken link https://cs.uwaterloo.ca/~browndg/798S10, 500 Server Error in:
| | 153 |
| This link is broken. The link target could not be loaded due to an HTTP error.
Broken link https://cs.uwaterloo.ca/~browndg/798S11, 500 Server Error in:
| | 155 |
| This link is broken. The target web server is unreachable or no longer running at this URL.
Broken link http://monod.uwaterloo.ca/,
| | 29 |
| This link is broken. The target web server is unreachable or no longer running at this URL.
Broken link http://monod.uwaterloo.ca/~cs482/,
| | 150 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.student.cs.uwaterloo.cs/~cs116/, in:
| | 140 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 15 105 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 9 37 136 161 187 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~browndg/dan_rover_2005.jpg,
actual dimensions:
200
x
292 pixels.
| W3C
| 8 |
| An unknown entity has been used. This often happens when ¶m=value is used instead of &param=value in URL query strings.
| HTML Validation Ampersand Problem
| 127 127 127 |
| Use link text between 3 and 80 characters so it's long enough to be understood, but avoids line wrapping.
| | 25 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 9 37 136 161 187 |
| Document type does not allow element "A" here.
| | 163 258 366 372 |
| Document type does not allow element "ADDRESS" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 372 |
| Document type does not allow element "H3" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 61 260 367 |
| Document type does not allow element "H4" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 63 121 180 193 214 230 276 |
| Document type does not allow element "P" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 268 365 371 |
| Document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 64 122 181 194 215 231 278 324 |
| End tag for "A" omitted, but its declaration does not permit this.
| | 374 374 374 |
| Important information should be available within two or three clicks of the homepage.
This page is 5 clicks from the home page.
| | 1 |
| Unclosed end-tag requires SHORTTAG YES.
| | 106 |
| Reference not terminated by REFC delimiter.
| | 145 |
| Reference to external entity in attribute value.
| | 145 |
| Document type does not allow element "td" here.
| | 462 |
| Document type does not allow element "h3" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 22 28 92 |
| Document type does not allow element "li" here; missing one of "ul", "ol", "menu", "dir" start-tag.
| | 144 145 163 164 170 171 376 |
| Document type does not allow element "table" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 29 93 |
| End tag for "LI" omitted, but OMITTAG NO was specified.
| | 19 19 19 26 71 71 71 |
| End tag for "html" omitted, but OMITTAG NO was specified.
| | 499 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 499 |
| End tag for "td" omitted, but OMITTAG NO was specified.
| | 465 |
| Element "LI" undefined.
| | 16 17 18 24 68 69 70 |
| Element "OL" undefined.
| | 23 |
| Element "UL" undefined.
| | 15 67 |
| Reference not terminated by REFC delimiter.
| | 88 88 |
| Reference to external entity in attribute value.
| | 88 88 |
| Document type does not allow element "h3" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 15 18 86 |
| Document type does not allow element "h4" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 66 77 81 |
| Document type does not allow element "li" here; missing one of "ul", "ol", "menu", "dir" start-tag.
| | 40 49 |
| Document type does not allow element "p" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 67 75 76 78 79 80 82 83 84 |
| Document type does not allow element "table" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 19 |
| Document type does not allow element "tr" here; assuming missing "table" start-tag.
| | 35 |
| End tag for "LI" omitted, but OMITTAG NO was specified.
| | 74 74 74 74 |
| End tag for "body" omitted, but OMITTAG NO was specified.
| | 88 |
| End tag for "html" omitted, but OMITTAG NO was specified.
| | 88 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 88 88 88 88 88 88 88 88 88 88 88 |
| End tag for "table" omitted, but OMITTAG NO was specified.
| | 88 |
| End tag for "td" omitted, but OMITTAG NO was specified.
| | 88 |
| End tag for "tr" omitted, but OMITTAG NO was specified.
| | 88 |
| End tag for "ul" omitted, but OMITTAG NO was specified.
| | 41 50 58 |
| Element "LI" undefined.
| | 70 71 72 73 |
| Element "UL" undefined.
| | 69 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 1 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 16 |
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 32 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 4 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| No document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
| | 1 |
| Document type does not allow element "A" here.
| | 85 |
| Document type does not allow element "HR" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 103 |
| Document type does not allow element "LI" here; missing one of "UL", "OL", "DIR", "MENU" start-tag.
| | 67 68 69 70 71 72 74 75 94 97 100 |
| End tag for "A" omitted, but its declaration does not permit this.
| | 85 85 |
| End tag for element "HEAD" which is not open.
| | 107 |
| An attribute value must be a literal unless it contains only name characters.
| | 11 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 11 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 65 93 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| Provide a search option on each page of content-rich Web sites.
| | 1 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 65 93 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 1 |
| This link is broken. The SRC or HREF is an empty string.
| | 195 213 233 250 267 506 544 556 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 183 206 225 242 261 287 309 322 340 358 384 403 425 443 464 55 326 273 299 370
...
|
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 21 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Value of attribute "VALIGN" cannot be "CENTER"; must be one of "TOP", "MIDDLE", "BOTTOM", "BASELINE".
| | 11 |
| No document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
| | 1 |
| Document type does not allow element "P" here; assuming missing "LI" start-tag.
| | 200 218 236 253 350 395 436 454 |
| Document type does not allow element "UL" here; assuming missing "LI" start-tag.
| | 271 297 324 368 413 474 |
| Start tag for "LI" omitted, but its declaration does not permit this.
| | 176 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 242 295 322 347 366 392 411 433 451 472 550 580 592 604 488 |
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 11 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| Use link text between 3 and 80 characters so it's long enough to be understood, but avoids line wrapping.
| | 384 403 425 568 |
| Headings should not contain other headings.
| WCAG1 AA 3.5
WCAG2 A 1.3.1
| 24 25 29 38 48 60 66 107 163 |
| Document type does not allow element "H3" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 24 25 29 38 48 60 66 107 163 |
| Document type does not allow element "HR" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 27 36 46 58 64 104 161 173 |
| Document type does not allow element "P" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 31 40 50 62 82 84 94 109 122 131 145 154 165 |
| Document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 72 86 96 |
| End tag for "H3" omitted, but its declaration does not permit this.
| | 175 |
| Avoid underlined text - people will click on it and think it's a broken link.
| | 110 123 131 145 154 |
| Important information should be available within two or three clicks of the homepage.
This page is 5 clicks from the home page.
| | 1 |
| Headings should not contain other headings.
| WCAG1 AA 3.5
WCAG2 A 1.3.1
| 24 25 29 38 48 60 66 93 149 |
| Document type does not allow element "H3" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 24 25 29 38 48 60 66 93 149 |
| Document type does not allow element "HR" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 27 36 46 58 64 90 147 159 |
| Document type does not allow element "P" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 31 40 50 62 95 108 117 131 140 151 |
| Document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 72 83 |
| End tag for "H3" omitted, but its declaration does not permit this.
| | 161 |
| Avoid underlined text - people will click on it and think it's a broken link.
| | 96 109 117 131 140 |
| Important information should be available within two or three clicks of the homepage.
This page is 5 clicks from the home page.
| | 1 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 212 |
| Each A tag must contain text or an IMG with an ALT tag.
| WCAG1 AA 13.1
WCAG2 A 2.4.4
| 257 |
| This page has more than one H1 tag, which violates Bing webmaster guidelines.
| Bing
| 222 251 |
| Required attribute "ALT" not specified.
| | 212 |
| Required attribute "TYPE" not specified.
| | 73 |
| Element "O:SMARTTAGTYPE" undefined.
| | 25 27 29 30 31 33 35 37 |
| If you set any of the colors on the BODY tag you must set all of them.
| WCAG1 AAA 2.2
WCAG2 AA F24
| 210 |
| Use relative rather than absolute units in CSS property values.
| WCAG1 AA 3.4
WCAG2 AA 1.4.4
| 80 90 107 78 |
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Use color changes to indicate to users when a link has been visited. This page sets identical colors for visited and unvisited links.
| | 210 |
| There is no attribute "NAME".
| | 25 |
| There is no attribute "NAMESPACEURI".
| | 24 |
| There is no attribute "XMLNS".
| | 2 |
| There is no attribute "XMLNS:O".
| | 5 |
| There is no attribute "XMLNS:ST1".
| | 3 |
| There is no attribute "XMLNS:V".
| | 6 |
| There is no attribute "XMLNS:W".
| | 4 |
| The :visited CSS selector only supports limited style changes.
| Firefox
Chrome
Safari
| 97 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 210 |
| Use a familiar font (Times, Georgia, Arial, Helvetica or Verdana) to achieve the best possible reading speed.
| | 83 101 75 |
| Don't use fonts only available on Macs, but not Windows, and vice versa.
| | 83 101 75 |
| The BODY LINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 210 |
| The BODY VLINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 210 |
| The IMG ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 251 |
| Property mso-fareast-font-family doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 82 109 |
| Property mso-footer-margin doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 114 |
| Property mso-header-margin doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 113 |
| Property mso-margin-bottom-alt doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 86 104 |
| Property mso-margin-top-alt doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 84 102 |
| Property mso-outline-level doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 89 |
| Property mso-pagination doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 79 88 106 |
| Property mso-paper-source doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 115 |
| Property mso-style-parent doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 76 |
| Property page doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 117 |
| Property size doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 111 |
| Property text-underline doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 96 100 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 89 263 |
| Use relative rather than absolute units in FONT SIZE attributes.
| WCAG1 AA 3.4
WCAG2 A 1.4.4
| 98 119 121 145 100 103 106 109 112 115 125 129 132 136 139 184 196 226 247 141
...
|
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 2 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 20 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Required attribute "ALT" not specified.
| | 90 264 |
| Invalid formal public identifier "-//w3c//dtd html 4.0 transitional//en": invalid public text class.
| | 1 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/images/black.gif, 404 Not Found in:
| | 90 264 89 263 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/~jmatlee/images/fse08.jp2, 404 Not Found in:
| | 245 243 |
| Avoid deprecated features of W3C technologies.
| WCAG1 AA 11.2
| 118 176 268 |
| Each section of content should begin with a heading tag (H1, H2, H3), but this page has no heading tags.
| WCAG1 AA 12.3
WCAG2 AAA 2.4.10
| 1 |
| If you set any of the colors on the BODY tag you must set all of them.
| WCAG1 AAA 2.2
WCAG2 AA F24
| 20 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 38 41 44 45 46 57 36 47 51 54 74 98 119 121 145 277 268 100 103 106
...
|
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 85 26 33 93 175 267 272 181 |
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| Use color changes to indicate to users when a link has been visited. This page sets identical colors for visited and unvisited links.
| | 20 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~jmatlee/images/icse14.jpg,
actual dimensions:
568
x
202 pixels.
| W3C
| 159 |
| There is no attribute "HEIGHT".
| | 92 |
| There is no attribute "LINK".
| | 93 |
| There is no attribute "TEXT".
| | 93 |
| There is no attribute "VLINK".
| | 93 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 20 |
| Use a familiar font (Times, Georgia, Arial, Helvetica or Verdana) to achieve the best possible reading speed.
| | 26 |
| Use at least a 12-point font on all Web pages.
| | 98 121 145 100 103 106 109 112 115 125 129 132 136 139 184 196 226 247 273 277
...
|
| Don't use fonts only available on Macs, but not Windows, and vice versa.
| | 26 |
| The BODY ALINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 20 |
| The BODY LINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 20 |
| The BODY VLINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 20 |
| CENTER element is deprecated in HTML 4.01.
| W3C Deprecated
| 118 176 268 |
| The DIV ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 96 273 |
| FONT element is deprecated in HTML 4.01.
| W3C Deprecated
| 38 41 44 45 46 57 36 47 51 54 74 98 119 121 145 277 268 100 103 106
...
|
| The IMG ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 89 263 62 |
| The IMG BORDER attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 252 89 247 263 62 |
| The TD HEIGHT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 93 175 267 272 |
| The TD WIDTH attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 26 33 93 175 267 272 181 |
| Use italic text sparingly - for one or two words or a short phrase.
| | 74 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 18 96 |
| Use relative rather than absolute units in FONT SIZE attributes.
| WCAG1 AA 3.4
WCAG2 A 1.4.4
| 14 101 26 39 40 107 65 63 71 75 79 83 41 75 65 83 79 71 107 79
...
|
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 42 28 |
| Required attribute "ALT" not specified.
| | 18 96 |
| No document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
| | 1 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/images/black.gif, 404 Not Found in:
| | 18 96 18 96 |
| Each section of content should begin with a heading tag (H1, H2, H3), but this page has no heading tags.
| WCAG1 AA 12.3
WCAG2 AAA 2.4.10
| 1 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 14 101 26 39 40 107 65 63 71 75 79 83 41 75 65 83 79 71 107 79
...
|
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 15 21 56 99 103 60 |
| Use color changes to indicate to users when a link has been visited. This page sets identical colors for visited and unvisited links.
| | 13 |
| There is no attribute "HEIGHT".
| | 20 58 |
| There is no attribute "LINK".
| | 21 |
| There is no attribute "TEXT".
| | 21 |
| There is no attribute "VLINK".
| | 21 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 13 |
| Use at least a 12-point font on all Web pages.
| | 101 26 40 107 65 63 71 75 79 83 41 75 65 71 79 83 65 107 107 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 23 252 |
| Required attribute "ALT" not specified.
| | 23 252 |
| Invalid formal public identifier "-//w3c//dtd html 4.0 transitional//en": invalid public text class.
| | 1 |
| Document type does not allow element "BR" here.
| | 20 56 |
| Document type does not allow element "TBODY" here.
| | 19 |
| Document type does not allow element "B" here; missing one of "DT", "DD" start-tag.
| | 62 |
| Document type does not allow element "CENTER" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 55 |
| Document type does not allow element "P" here; assuming missing "DD" start-tag.
| | 64 |
| Document type does not allow element "TBODY" here; assuming missing "TABLE" start-tag.
| | 55 |
| End tag for "TABLE" omitted, but its declaration does not permit this.
| | 56 |
| End tag for "TBODY" which is not finished.
| | 20 56 |
| End tag for element "FONT" which is not open.
| | 100 |
| An attribute value must be a literal unless it contains only name characters.
| | 17 23 40 62 252 |
| Avoid deprecated features of W3C technologies.
| WCAG1 AA 11.2
| 29 40 53 55 257 |
| Each section of content should begin with a heading tag (H1, H2, H3), but this page has no heading tags.
| WCAG1 AA 12.3
WCAG2 AAA 2.4.10
| 1 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 17 73 87 98 104 112 120 129 157 165 179 205 213 239 30 71 78 86 94 103
...
|
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 18 27 52 60 256 261 |
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Use color changes to indicate to users when a link has been visited. This page sets identical colors for visited and unvisited links.
| | 16 |
| There is no attribute "HEIGHT".
| | 26 53 |
| There is no attribute "LINK".
| | 27 |
| There is no attribute "TEXT".
| | 27 |
| There is no attribute "VLINK".
| | 27 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 16 |
| Use at least a 12-point font on all Web pages.
| | 194 220 228 73 98 112 120 129 157 165 205 213 239 71 78 86 94 103 117 126
...
|
| The BODY ALINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 16 |
| The BODY LINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 16 |
| The BODY TEXT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 16 |
| The BODY VLINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 16 |
| CENTER element is deprecated in HTML 4.01.
| W3C Deprecated
| 29 40 53 55 257 |
| The DIV ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 262 |
| FONT element is deprecated in HTML 4.01.
| W3C Deprecated
| 17 73 87 98 104 112 120 129 157 165 179 205 213 239 30 71 78 86 94 103
...
|
| The IMG ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 23 252 |
| The IMG BORDER attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 23 252 |
| The TD HEIGHT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 27 52 60 256 261 |
| The TD WIDTH attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 27 52 60 256 261 |
| Use relative rather than absolute units in FONT SIZE attributes.
| WCAG1 AA 3.4
WCAG2 A 1.4.4
| 17 31 42 43 257 238 178 236 227 231 45 67 71 87 102 106 110 129 132 136
...
|
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 47 32 |
| Required attribute "ALT" not specified.
| | 23 248 |
| Document type does not allow element "HR" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 117 128 142 156 200 218 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/images/black.gif, 404 Not Found in:
| | 23 248 22 247 |
| Each section of content should begin with a heading tag (H1, H2, H3), but this page has no heading tags.
| WCAG1 AA 12.3
WCAG2 AAA 2.4.10
| 1 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 17 31 42 43 257 238 178 236 227 231 45 67 71 87 102 106 110 129 132 136
...
|
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Use color changes to indicate to users when a link has been visited. This page sets identical colors for visited and unvisited links.
| | 15 |
| There is no attribute "HEIGHT".
| | 25 60 |
| There is no attribute "LINK".
| | 26 |
| There is no attribute "TEXT".
| | 26 |
| There is no attribute "VLINK".
| | 26 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 15 |
| Use at least a 12-point font on all Web pages.
| | 31 43 257 227 231 45 71 87 102 106 110 129 132 136 143 146 150 157 160 163
...
|
| The BODY ALINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 15 |
| The BODY LINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 15 |
| The BODY TEXT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 15 |
| The BODY VLINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 15 |
| The DIV ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 29 41 52 58 252 256 |
| FONT element is deprecated in HTML 4.01.
| W3C Deprecated
| 17 31 42 43 257 238 178 236 227 231 45 67 71 87 102 106 110 129 132 136
...
|
| The IMG ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 22 247 |
| The IMG BORDER attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 22 247 |
| The TD HEIGHT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 26 57 251 255 63 |
| The TD WIDTH attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 26 57 251 255 63 |
| Each A tag must contain text or an IMG with an ALT tag.
| WCAG1 AA 13.1
WCAG2 A 2.4.4
| 134 |
| Use relative rather than absolute units in FONT SIZE attributes.
| WCAG1 AA 3.4
WCAG2 A 1.4.4
| 17 43 44 55 177 179 59 46 97 99 83 88 157 95 172 31 126 93 106 121
...
|
| Required attribute "ALT" not specified.
| | 23 168 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/images/black.gif, 404 Not Found in:
| | 23 168 22 167 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/%7ecs445, in:
| | 85 |
| Each section of content should begin with a heading tag (H1, H2, H3), but this page has no heading tags.
| WCAG1 AA 12.3
WCAG2 AAA 2.4.10
| 1 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 17 43 44 55 177 179 59 46 97 99 83 88 157 95 172 31 126 93 106 121
...
|
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Use color changes to indicate to users when a link has been visited. This page sets identical colors for visited and unvisited links.
| | 15 |
| There is no attribute "HEIGHT".
| | 25 67 |
| There is no attribute "LINK".
| | 26 |
| There is no attribute "TEXT".
| | 26 |
| There is no attribute "VLINK".
| | 26 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 15 |
| Use at least a 12-point font on all Web pages.
| | 44 177 46 97 99 83 88 95 172 31 126 93 106 121 137 133 139 109 124 141
...
|
| The BODY ALINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 15 |
| The BODY LINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 15 |
| The BODY TEXT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 15 |
| The BODY VLINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 15 |
| The DIV ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 29 42 53 66 172 176 78 |
| FONT element is deprecated in HTML 4.01.
| W3C Deprecated
| 17 43 44 55 177 179 59 46 97 99 83 88 157 95 172 31 126 93 106 121
...
|
| The IMG ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 22 167 |
| The IMG BORDER attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 22 167 |
| The TD HEIGHT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 26 65 171 175 71 |
| The TD WIDTH attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 26 65 171 175 71 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 26 |
| Each A tag must contain text or an IMG with an ALT tag.
| WCAG1 AA 13.1
WCAG2 A 2.4.4
| 26 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 2 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Use relative rather than absolute units in CSS property values.
| WCAG1 AA 3.4
WCAG2 AA 1.4.4
| 7 13 |
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 21 24 32 40 46 54 64 71 78 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 81 96 29 35 |
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| Provide a search option on each page of content-rich Web sites.
| | 1 |
| There is no attribute "CLASS".
| | 38 |
| There is no attribute "TYPE".
| | 6 |
| Use at least a 12-point font on all Web pages.
| | 7 13 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 81 96 29 35 |
| Use relative rather than absolute units in FONT SIZE attributes.
| WCAG1 AA 3.4
WCAG2 A 1.4.4
| 84 180 181 71 73 74 75 76 77 78 62 100 121 194 211 272 287 341 358 422
...
|
| Using spaces to create multiple columns results in screen readers reading columns in the wrong order.
| WCAG2 A F33
WCAG2 A F34
WCAG2 A F48
| 1726 1809 1882 1934 |
| Character "%" is not allowed in the value of attribute "WIDTH".
| | 15 18 104 168 198 249 276 318 345 401 426 442 503 531 585 612 653 679 735 762
...
|
| Non SGML character number 139.
| | 145 145 146 147 235 242 313 382 384 385 386 387 388 392 393 394 395 396 397 491
...
|
| Non SGML character number 145.
| | 428 1538 1708 1708 1709 1709 1769 1798 1798 1798 1798 1799 1799 1799 1799 1919 1919 1929 |
| Non SGML character number 146.
| | 84 136 428 481 628 642 1477 1478 1538 1708 1708 1709 1709 1769 1801 1919 1919 1929 |
| Non SGML character number 149.
| | 1259 1260 1261 1265 1266 1268 |
| Non SGML character number 151.
| | 136 372 478 478 546 547 675 1314 1315 1341 1341 1477 |
| Non SGML character number 155.
| | 145 145 146 147 235 242 313 382 384 385 386 387 388 392 393 394 395 396 397 491
...
|
| Document type does not allow element "FONT" here.
| | 391 |
| End tag for "H1" omitted, but its declaration does not permit this.
| | 22 93 187 265 334 415 519 601 668 750 827 898 978 1051 1138 1209 1288 1370 1524 1600
...
|
| Start tag for "LI" omitted, but its declaration does not permit this.
| | 61 62 71 1085 1265 |
| There is no attribute "FACE".
| | 78 |
| Use a familiar font (Times, Georgia, Arial, Helvetica or Verdana) to achieve the best possible reading speed.
| | 391 438 440 443 614 618 619 911 912 913 914 915 916 918 1064 1065 1066 1067 1068 1069
...
|
| Don't use fonts only available on Macs, but not Windows, and vice versa.
| | 391 244 245 438 440 443 580 581 614 618 619 651 722 874 875 911 912 913 914 915
...
|
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 2 |
| Identify row and column headers in data tables using TH elements.
| WCAG1 A 5.1
Section 508 1194.22 (g)
WCAG2 A H51
| 178 |
| This form control has no associated LABEL element.
| WCAG2 A F68
Section 508 1194.22 (n)
| 59 61 63 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 83 |
| This form has fields without LABEL elements or TITLE attributes.
| Section 508 1194.22 (n)
| 59 61 |
| The A element must not contain other A elements.
| HTML Validation
| 136 |
| ID "primarynavsub" already defined.
| | 87 101 |
| Document type does not allow element "p" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 128 148 |
| End tag for "a" omitted, but OMITTAG NO was specified.
| | 136 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 136 161 161 |
| End tag for "ul" omitted, but OMITTAG NO was specified.
| | 104 |
| Element "A" undefined.
| | 129 149 |
| End tag for element "P" which is not open.
| | 127 132 147 |
| End tag for element "a" which is not open.
| | 129 |
| This page has duplicate IDs which cause problems in screen readers.
| WCAG2 A F77
| 87 |
| This link is broken. The link target could not be loaded due to an HTTP error.
Broken link http://cs.uwaterloo.ca/~biedl/research/index.hhml, 403 Unauthorized in:
| | 80 |
| All radio button groups should be contained in a FIELDSET tag.
| WCAG1 AA 12.3
| 59 61 |
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 178 180 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| Use LABEL tags for each data entry field to show what data is expected.
| | 59 61 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
http://www.cs.uwaterloo.ca/snaps/large/biedl.jpg,
actual dimensions:
400
x
560 pixels.
| W3C
| 124 |
| There is no attribute "href".
| | 129 |
| Provide SUMMARY attributes for data tables (but not for layout tables.)
| WCAG1 AAA 5.5
| 178 |
| Use link text between 3 and 80 characters so it's long enough to be understood, but avoids line wrapping.
| | 129 |
| Use at least a 12-point font on all Web pages.
| | 28 |
| The A NAME attribute is deprecated in XHTML 1.0, and is illegal in XHTML 1.1 Strict.
| W3C Deprecated
| 111 |
| Capitalize the first letter of the first word in lists.
| | 91 87 94 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 42 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 15 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 50 |
| This page has more than one H1 tag, which violates Bing webmaster guidelines.
| Bing
| 66 41 |
| Required attribute "alt" not specified.
| | 42 |
| Required attribute "src" not specified.
| | 42 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 39 41 41 42 42 42 42 68 |
| Document type does not allow element "ol" here; missing one of "object", "ins", "del", "map", "button" start-tag.
| | 71 |
| Element "font" undefined.
| | 68 |
| Avoid specifying a new window as the target of a link with target="_blank".
| WCAG1 AA 10.1
WCAG2 AAA F22
| 73 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 68 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| There is no attribute "ALIGN".
| | 41 |
| There is no attribute "BORDER".
| | 39 42 |
| There is no attribute "SRC".
| | 42 |
| There is no attribute "VALIGN".
| | 41 |
| There is no attribute "WIDTH".
| | 39 41 42 |
| There is no attribute "color".
| | 68 |
| There is no attribute "target".
| | 73 |
| Headings should not contain other headings.
| WCAG1 AA 3.5
WCAG2 A 1.3.1
| 124 149 160 171 178 183 189 193 |
| This link is broken. The target anchor does not exist or is commented out.
| | 271 270 |
| This page has more than one H1 tag, which violates Bing webmaster guidelines.
| Bing
| 72 45 |
| "l" is not a member of a group specified for any attribute.
| | 57 |
| Required attribute "alt" not specified.
| | 46 |
| Required attribute "src" not specified.
| | 46 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 43 45 45 46 46 46 46 |
| Character "&" is the first character of a delimiter but occurred as data.
| | 104 |
| Document type does not allow element "h2" here; missing one of "object", "ins", "del", "map", "button" start-tag.
| | 124 149 160 171 178 183 189 193 |
| Document type does not allow element "ol" here; missing one of "object", "ins", "del", "map", "button" start-tag.
| | 110 125 150 161 172 179 184 190 194 |
| End tag for "h2" omitted, but OMITTAG NO was specified.
| | 198 198 198 198 198 198 198 198 198 |
| End tag for "li" omitted, but OMITTAG NO was specified.
| | 146 192 |
| Element "font" undefined.
| | 76 78 80 82 84 87 90 104 112 114 117 119 126 126 128 130 132 134 136 138
...
|
| Element "u" undefined.
| | 76 78 80 82 84 87 90 104 112 114 117 119 126 128 130 132 134 136 138 140
...
|
| End tag for element "b" which is not open.
| | 246 256 |
| End tag for element "h1" which is not open.
| | 109 124 149 160 171 178 183 189 193 |
| End tag for element "i" which is not open.
| | 144 |
| End tag for element "li" which is not open.
| | 126 |
| End tag for element "span" which is not open.
| | 210 211 |
| This link is broken. The link target could not be loaded due to an HTTP error.
Broken link https://cs.uwaterloo.ca/~bbonakda/Publications/NFM12/nfm12.ps, 403 Unauthorized in:
| | 119 |
| Avoid specifying a new window as the target of a link with target="_blank".
| WCAG1 AA 10.1
WCAG2 AAA F22
| 256 256 211 191 191 |
| Avoid deprecated features of W3C technologies.
| WCAG1 AA 11.2
| 90 76 78 80 84 82 126 112 117 128 130 132 134 140 142 87 151 153 155 164
...
|
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 246 256 78 209 84 128 80 134 90 126 132 117 130 142 208 211 76 164 162 173
...
|
| Avoid underlined text - people will click on it and think it's a broken link.
| | 90 76 78 80 84 82 126 112 117 128 130 132 134 140 142 87 151 153 155 164
...
|
| There is no attribute "ALIGN".
| | 45 |
| There is no attribute "BORDER".
| | 43 46 |
| There is no attribute "SRC".
| | 46 |
| There is no attribute "VALIGN".
| | 45 |
| There is no attribute "WIDTH".
| | 43 45 46 |
| There is no attribute "color".
| | 76 |
| There is no attribute "target".
| | 191 |
| Use link text between 3 and 80 characters so it's long enough to be understood, but avoids line wrapping.
| | 246 256 84 90 76 140 187 80 104 87 119 207 128 82 130 142 176 117 186 112
...
|
| The A NAME attribute is deprecated in XHTML 1.0, and is illegal in XHTML 1.1 Strict.
| W3C Deprecated
| 240 70 96 201 251 |
| This page has more than one H1 tag, which violates Bing webmaster guidelines.
| Bing
| 73 64 29 |
| Users should be able to quickly look at each link and tell where it goes.
Link text:
"here"
| | 59 |
| Required attribute "alt" not specified.
| | 30 |
| Required attribute "src" not specified.
| | 30 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 27 29 29 30 30 30 30 55 |
| Document type does not allow element "h3" here; missing one of "object", "ins", "del", "map", "button" start-tag.
| | 112 114 |
| Element "font" undefined.
| | 55 |
| Don't use generic text like "Click Here" or "Read More" in link text, because it says nothing about the link target when read out by a screen reader.
Link text:
"here"
| WCAG1 AA 13.1
WCAG2 AAA F84
| 59 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 55 |
| There is no attribute "ALIGN".
| | 29 |
| There is no attribute "BORDER".
| | 27 30 |
| There is no attribute "SRC".
| | 30 |
| There is no attribute "VALIGN".
| | 29 |
| There is no attribute "WIDTH".
| | 27 29 30 |
| There is no attribute "color".
| | 55 |
| The A NAME attribute is deprecated in XHTML 1.0, and is illegal in XHTML 1.1 Strict.
| W3C Deprecated
| 118 132 62 71 80 92 108 |
| IFRAME tags must have alternative content.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A 1.1.1
| 57 |
| No TITLE attributes found for the frames on these pages.
| WCAG1 A 12.1
Section 508 1194.22 (i)
WCAG2 A 2.4.1
| 57 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 57 |
| This page has more than one H1 tag, which violates Bing webmaster guidelines.
| Bing
| 55 29 |
| Required attribute "alt" not specified.
| | 30 |
| Required attribute "src" not specified.
| | 30 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 27 29 29 30 30 30 30 |
| Element "iframe" undefined.
| | 57 |
| There is no attribute "ALIGN".
| | 29 |
| There is no attribute "BORDER".
| | 27 30 |
| There is no attribute "SRC".
| | 30 |
| There is no attribute "VALIGN".
| | 29 |
| There is no attribute "WIDTH".
| | 27 29 30 |
| There is no attribute "frameborder".
| | 57 |
| There is no attribute "height".
| | 57 |
| There is no attribute "scrolling".
| | 57 |
| There is no attribute "src".
| | 57 |
| There is no attribute "width".
| | 57 |
| Identify row and column headers in data tables using TH elements.
| WCAG1 A 5.1
Section 508 1194.22 (g)
WCAG2 A H51
| 96 |
| Document type does not allow element "h3" here; missing one of "object", "ins", "del", "map", "button" start-tag.
| | 60 81 94 109 113 |
| Document type does not allow element "p" here; missing one of "object", "ins", "del", "map", "button" start-tag.
| | 60 81 94 109 113 |
| Document type does not allow element "ul" here; missing one of "object", "ins", "del", "map", "button" start-tag.
| | 64 |
| End tag for "HR" omitted, but OMITTAG NO was specified.
| | 119 119 119 119 |
| End tag for "P" omitted, but OMITTAG NO was specified.
| | 119 119 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 119 119 119 119 119 119 119 119 119 119 |
| Element "HR" undefined.
| | 80 93 108 112 |
| Element "P" undefined.
| | 83 92 |
| Element "TABLE" undefined.
| | 96 |
| Element "TD" undefined.
| | 97 97 98 98 100 100 101 101 103 103 104 104 |
| Element "TR" undefined.
| | 97 98 100 101 103 104 |
| Element "center" undefined.
| | 147 |
| Avoid deprecated features of W3C technologies.
| WCAG1 AA 11.2
| 147 |
| Provide a search option on each page of content-rich Web sites.
| | 1 |
| Provide SUMMARY attributes for data tables (but not for layout tables.)
| WCAG1 AAA 5.5
| 96 |
| Each A tag must contain text or an IMG with an ALT tag.
| WCAG1 AA 13.1
WCAG2 A 2.4.4
| 26 31 150 158 166 225 270 325 337 351 360 374 388 408 415 421 431 454 459 497
...
|
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 1 |
| This link is broken. The target anchor does not exist or is commented out.
| | 83 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 6 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Invalid comment declaration: found character "<" outside comment but inside comment declaration.
| | 61 86 113 121 |
| Unterminated comment: found end of entity inside comment.
| | 541 |
| No document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
| | 1 |
| Invalid comment declaration: found name character outside comment but inside comment declaration.
| | 224 |
| Document type does not allow element "A" here.
| | 283 288 293 298 303 308 315 325 |
| Document type does not allow element "CENTER" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 63 |
| Document type does not allow element "H2" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 144 184 278 318 |
| Document type does not allow element "HR" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 316 |
| Document type does not allow element "P" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 321 |
| Document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 280 323 |
| End tag for "UL" omitted, but its declaration does not permit this.
| | 327 541 |
| End tag for element "A" which is not open.
| | 28 33 72 86 113 152 160 168 227 240 272 339 353 362 367 376 390 392 410 417
...
|
| End tag for element "CENTER" which is not open.
| | 101 117 |
| End tag for element "UL" which is not open.
| | 328 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.acs.oakland.edu/~grossman/erdoshp.html, in:
| | 258 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.exposureentertainment.com/timbrecht.html, in:
| | 499 |
| Avoid deprecated features of W3C technologies.
| WCAG1 AA 11.2
| 21 63 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 122 144 184 278 318 344 368 395 405 493 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| An unknown entity has been used. This often happens when ¶m=value is used instead of &param=value in URL query strings.
| HTML Validation Ampersand Problem
| 265 265 265 265 265 265 265 265 265 265 265 265 265 265 265 265 265 265 265 265
...
|
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 122 144 184 278 318 344 368 395 405 493 |
| Capitalize the first letter of the first word in lists.
| | 237 269 324 359 373 |
| Invalid comment declaration: found character "<" outside comment but inside comment declaration.
| | 1061 1204 1234 1260 1289 |
| Invalid comment declaration: found name character outside comment but inside comment declaration.
| | 18 23 59 95 122 150 177 204 233 265 316 344 374 404 436 466 493 522 554 577
...
|
| Invalid comment declaration: found delimiter "(" outside comment but inside comment declaration.
| | 955 |
| Document type does not allow element "A" here.
| | 287 294 305 310 321 333 338 346 359 364 376 393 398 406 420 425 430 438 450 455
...
|
| Document type does not allow element "BODY" here.
| | 17 |
| Document type does not allow element "LI" here.
| | 293 320 345 405 437 467 895 1153 |
| Document type does not allow element "H3" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 1469 |
| Document type does not allow element "LI" here; missing one of "UL", "OL", "DIR", "MENU" start-tag.
| | 375 494 523 555 578 605 633 661 701 731 774 797 824 1010 1088 1318 1358 1397 1440 |
| End tag for "A" omitted, but its declaration does not permit this.
| | 1476 1476 1476 1476 1476 1476 1476 |
| End tag for "UL" omitted, but its declaration does not permit this.
| | 1476 |
| Start tag for "LI" omitted, but its declaration does not permit this.
| | 23 |
| An attribute value must be a literal unless it contains only name characters.
| | 747 |
| Each A tag must contain text or an IMG with an ALT tag.
| WCAG1 AA 13.1
WCAG2 A 2.4.4
| 148 184 |
| Document must have a title.
| WCAG1 AA 13.2
WCAG2 A 2.4.2
| 1 |
| Headings should not contain other headings.
| WCAG1 AA 3.5
WCAG2 A 1.3.1
| 488 602 |
| This page is blank.
| | 1 |
| Google, Bing and Yahoo recommend that all pages have a TITLE tag.
| Google
Yahoo
Bing
| 1 |
| Invalid comment declaration: found character "<" outside comment but inside comment declaration.
| | 76 78 |
| No document type declaration; will parse without validation.
| | 1 |
| Invalid comment declaration: found name character outside comment but inside comment declaration.
| | 74 80 84 85 93 109 146 163 167 171 182 197 212 232 243 258 274 290 300 315
...
|
| Invalid comment declaration: found delimiter "(" outside comment but inside comment declaration.
| | 82 |
| Document type does not allow element "HR" here.
| | 2 |
| End tag for element "H2" which is not open.
| | 332 488 |
| End tag for element "H3" which is not open.
| | 76 |
| End tag for element "OL" which is not open.
| | 227 |
| An attribute value must be a literal unless it contains only name characters.
| | 189 204 220 250 267 282 305 320 |
| An unknown entity has been used. This often happens when ¶m=value is used instead of &param=value in URL query strings.
| HTML Validation Ampersand Problem
| 15 15 15 21 27 50 112 118 124 132 137 139 151 161 174 187 202 217 236 247 |
| Capitalize the first letter of the first word in lists.
| | 147 183 |
| This page has no title. Each page should have a descriptive and meaningfully different title.
| | 1 |
| Using spaces to create multiple columns results in screen readers reading columns in the wrong order.
| WCAG2 A F33
WCAG2 A F34
WCAG2 A F48
| 81 183 |
| This link is broken. The target anchor does not exist or is commented out.
| | 56 |
| Duplicate specification of attribute "ALIGN".
| | 8 |
| Invalid comment declaration: found name character outside comment but inside comment declaration.
| | 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 353 354 355 434 521
...
|
| Document type does not allow element "A" here.
| | 160 176 203 207 214 342 347 360 366 368 375 380 406 412 414 416 418 420 426 432
...
|
| Document type does not allow element "H1" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 536 |
| Document type does not allow element "H2" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 78 131 159 177 204 216 361 376 407 427 448 |
| Document type does not allow element "H3" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 225 254 281 289 320 |
| Document type does not allow element "HR" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 174 200 212 357 372 404 424 445 534 544 |
| Document type does not allow element "P" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 162 180 192 217 384 389 399 |
| Document type does not allow element "PRE" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 183 396 |
| Document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 226 255 283 291 321 364 378 410 430 451 |
| End tag for "A" omitted, but its declaration does not permit this.
| | 560 560 560 |
| An attribute specification must start with a name or name token.
| | 2 |
| Element "CENTER" undefined.
| | 541 |
| Element "FONT" undefined.
| | 13 14 17 26 28 30 42 44 55 64 70 76 78 83 90 95 100 105 108 115
...
|
| Element "SITEMAP" undefined.
| | 2 |
| Element "SUP" undefined.
| | 331 |
| Element "TABLE" undefined.
| | 539 |
| Element "TD" undefined.
| | 541 |
| Element "TR" undefined.
| | 540 |
| End tag for element "BODY" which is not open.
| | 558 |
| End tag for element "FONT" which is not open.
| | 551 |
| End tag for element "TABLE" which is not open.
| | 536 |
| End tag for element "TD" which is not open.
| | 534 |
| End tag for element "TR" which is not open.
| | 535 |
| There is no attribute "ALIGN".
| | 14 |
| There is no attribute "ALINK".
| | 12 |
| There is no attribute "BGCOLOR".
| | 12 |
| There is no attribute "BORDER".
| | 539 556 |
| There is no attribute "CELLPADDING".
| | 539 |
| There is no attribute "CELLSPACING".
| | 539 |
| There is no attribute "LINK".
| | 12 |
| There is no attribute "SIZE".
| | 14 |
| There is no attribute "TARGET".
| | 25 |
| There is no attribute "TEXT".
| | 12 |
| There is no attribute "TYPE".
| | 9 |
| There is no attribute "VALIGN".
| | 541 |
| There is no attribute "VLINK".
| | 12 |
| Use a familiar font (Times, Georgia, Arial, Helvetica or Verdana) to achieve the best possible reading speed.
| | 347 367 25 |
| Using spaces to create multiple columns results in screen readers reading columns in the wrong order.
| WCAG2 A F33
WCAG2 A F34
WCAG2 A F48
| 81 183 |
| Duplicate specification of attribute "ALIGN".
| | 8 |
| Invalid comment declaration: found name character outside comment but inside comment declaration.
| | 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 353 354 355 434 521
...
|
| Document type does not allow element "H1" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 536 |
| Document type does not allow element "H2" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 78 131 159 177 204 216 361 376 407 427 448 |
| Document type does not allow element "H3" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 225 254 281 289 320 |
| Document type does not allow element "PRE" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 183 396 |
| Document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 226 255 283 291 321 364 378 410 430 451 |
| End tag for "A" omitted, but its declaration does not permit this.
| | 560 560 560 |
| Using spaces to create multiple columns results in screen readers reading columns in the wrong order.
| WCAG2 A F33
WCAG2 A F34
WCAG2 A F48
| 165 |
| This IMG links to a file with the wrong MIME type for an image.
Image: https://cs.uwaterloo.ca/~brecht/courses/, file type is: text/html.
| | 7 |
| Invalid comment declaration: found name character outside comment but inside comment declaration.
| | 45 247 |
| Document type does not allow element "H2" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 68 145 193 214 229 301 333 437 449 480 505 |
| Document type does not allow element "LI" here; missing one of "UL", "OL", "DIR", "MENU" start-tag.
| | 348 356 364 391 399 408 416 |
| End tag for element "UL" which is not open.
| | 431 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/~cs354, in:
| | 367 318 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/~cs354/nachos/install.html, in:
| | 372 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/~cs354/nachos/modification.html, in:
| | 374 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/~cs354/nachos/simulator_overview.html, in:
| | 376 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/~cs354/nachos/os_overview.html, in:
| | 378 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/~cs354/nachos/linux-nachos.html, in:
| | 380 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/~cs354/nachos/relatedtools.html, in:
| | 382 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/~cs354/misc/sharing.html, in:
| | 384 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/~cs354/misc/fileperms.html, in:
| | 386 |
| "AND" is not a member of a group specified for any attribute.
| | 45 |
| "APPLICATIONS" is not a member of a group specified for any attribute.
| | 46 |
| "BOTH" is not a member of a group specified for any attribute.
| | 46 |
| "COMPARE" is not a member of a group specified for any attribute.
| | 44 |
| "DISTRIBUTED" is not a member of a group specified for any attribute.
| | 45 |
| "FOR" is not a member of a group specified for any attribute.
| | 44 46 |
| "IMPLEMENTED" is not a member of a group specified for any attribute.
| | 46 |
| "MEMORY." is not a member of a group specified for any attribute.
| | 46 |
| "MESSAGE" is not a member of a group specified for any attribute.
| | 45 |
| "NETWORKS" is not a member of a group specified for any attribute.
| | 45 |
| "NINE" is not a member of a group specified for any attribute.
| | 46 |
| "OF" is not a member of a group specified for any attribute.
| | 45 |
| "ON" is not a member of a group specified for any attribute.
| | 45 |
| "PARADIGMS" is not a member of a group specified for any attribute.
| | 44 |
| "PARADIGMS." is not a member of a group specified for any attribute.
| | 47 |
| "PARALLEL" is not a member of a group specified for any attribute.
| | 44 |
| "PASSING" is not a member of a group specified for any attribute.
| | 45 |
| "PRESENT" is not a member of a group specified for any attribute.
| | 46 |
| "PROGRAMMING" is not a member of a group specified for any attribute.
| | 44 |
| "RESULTS" is not a member of a group specified for any attribute.
| | 46 |
| "SHARED" is not a member of a group specified for any attribute.
| | 45 |
| "THAT" is not a member of a group specified for any attribute.
| | 46 |
| "TWO" is not a member of a group specified for any attribute.
| | 44 |
| "USING" is not a member of a group specified for any attribute.
| | 46 |
| "WE" is not a member of a group specified for any attribute.
| | 46 |
| "WERE" is not a member of a group specified for any attribute.
| | 46 |
| "WORKSTATIONS:" is not a member of a group specified for any attribute.
| | 45 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 240 269 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 1 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Required attribute "alt" not specified.
| | 240 270 |
| Required attribute "type" not specified.
| | 78 |
| Value of fixed attribute "xmlns" not equal to default.
| | 5 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 8 9 9 10 11 12 13 235 235 235 238 240 240 240 240 269 269 269 270 270
...
|
| "endif" is not a reserved name.
| | 270 |
| "if" is not a reserved name.
| | 269 |
| Element "o:SmartTagType" undefined.
| | 24 26 28 30 32 34 36 38 |
| Element "o:p" undefined.
| | 311 |
| Element "st1:City" undefined.
| | 283 |
| Element "st1:PlaceName" undefined.
| | 279 |
| Element "st1:PlaceType" undefined.
| | 278 |
| Element "st1:PostalCode" undefined.
| | 284 |
| Element "st1:State" undefined.
| | 283 |
| Element "st1:Street" undefined.
| | 281 |
| Element "st1:address" undefined.
| | 281 |
| Element "st1:country-region" undefined.
| | 285 |
| If you set any of the colors on the BODY tag you must set all of them.
| WCAG1 AAA 2.2
WCAG2 AA F24
| 235 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| Use color changes to indicate to users when a link has been visited. This page sets identical colors for visited and unvisited links.
| | 235 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~epfchan/chan.jpg,
actual dimensions:
400
x
560 pixels.
| W3C
| 269 |
| There is no attribute "downloadurl".
| | 28 |
| There is no attribute "name".
| | 24 |
| There is no attribute "namespaceuri".
| | 23 |
| There is no attribute "v:shapes".
| | 270 |
| There is no attribute "w:st".
| | 278 279 281 281 283 283 284 285 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 235 |
| Required attribute "alt" not specified.
| | 328 528 740 |
| Required attribute "type" not specified.
| | 50 |
| Value of fixed attribute "xmlns" not equal to default.
| | 5 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 8 9 9 10 11 12 13 320 320 320 323 327 327 328 330 333 344 356 362 374
...
|
| "endif" is not a reserved name.
| | 337 349 367 382 398 411 419 427 435 443 452 460 468 476 484 492 500 508 516 524
...
|
| "if" is not a reserved name.
| | 335 347 365 380 396 409 417 425 433 441 450 458 466 474 482 490 498 506 514 522
...
|
| Element "o:SmartTagType" undefined.
| | 24 26 28 30 32 |
| Element "o:p" undefined.
| | 325 331 342 354 360 372 388 392 541 546 558 692 |
| Element "st1:City" undefined.
| | 620 630 |
| Element "st1:PlaceName" undefined.
| | 387 404 569 591 749 |
| Element "st1:PlaceType" undefined.
| | 386 404 569 590 748 |
| Element "st1:country-region" undefined.
| | 469 509 621 630 |
| Element "st1:place" undefined.
| | 386 403 469 509 568 590 620 631 748 |
| Element "u6:p" undefined.
| | 694 |
| This link is broken. The link target could not be loaded due to an HTTP error.
Broken link https://cs.uwaterloo.ca/~epfchan/publication/SP.ps, 403 Unauthorized in:
| | 565 |
| This link is broken. The link target could not be loaded due to an HTTP error.
Broken link https://cs.uwaterloo.ca/~epfchan/publication/BQ.ps, 403 Unauthorized in:
| | 577 |
| If you set any of the colors on the BODY tag you must set all of them.
| WCAG1 AAA 2.2
WCAG2 AA F24
| 320 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 325 327 528 740 |
| Use color changes to indicate to users when a link has been visited. This page sets identical colors for visited and unvisited links.
| | 320 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~epfchan/index.4.jpg,
actual dimensions:
240
x
51 pixels.
| W3C
| 740 |
| There is no attribute "name".
| | 24 |
| There is no attribute "namespaceuri".
| | 23 |
| There is no attribute "w:st".
| | 386 386 387 469 620 |
| Many people with cognitive disabilities (including dyslexia) find justified text very hard to read (text aligned to both the left and the right margins).
| WCAG2 AAA F88
| 327 330 333 344 356 362 374 377 390 394 407 415 423 431 439 448 456 464 472 480
...
|
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 320 |
| This page has more than one H1 tag, which violates Bing webmaster guidelines.
| Bing
| 184 187 |
| Required attribute "alt" not specified.
| | 185 187 |
| Required attribute "type" not specified.
| | 68 |
| Value of fixed attribute "xmlns" not equal to default.
| | 5 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 9 10 10 11 12 13 14 179 179 179 182 184 184 184 184 185 187 187 187 192
...
|
| End tag for "st1:place" omitted, but OMITTAG NO was specified.
| | 240 |
| Element "ns0:PlaceName" undefined.
| | 241 250 |
| Element "ns0:PlaceType" undefined.
| | 239 250 |
| Element "ns0:place" undefined.
| | 239 250 |
| Element "o:SmartTagType" undefined.
| | 25 27 29 |
| Element "o:p" undefined.
| | 207 211 222 226 244 253 297 305 310 |
| Element "st1:PlaceName" undefined.
| | 194 203 217 231 241 |
| Element "st1:PlaceType" undefined.
| | 194 202 215 230 240 |
| Element "st1:place" undefined.
| | 193 202 215 230 239 |
| End tag for element "st1:place" which is not open.
| | 240 |
| If you set any of the colors on the BODY tag you must set all of them.
| WCAG1 AAA 2.2
WCAG2 AA F24
| 179 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 184 187 |
| Use color changes to indicate to users when a link has been visited. This page sets identical colors for visited and unvisited links.
| | 179 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~epfchan/theses7.jpg,
actual dimensions:
349
x
78 pixels.
| W3C
| 187 |
| There is no attribute "name".
| | 25 |
| There is no attribute "namespaceuri".
| | 24 |
| There is no attribute "w:st".
| | 193 194 194 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 179 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 3 |
| Identify row and column headers in data tables using TH elements.
| WCAG1 A 5.1
Section 508 1194.22 (g)
WCAG2 A H51
| 74 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 29 36 42 |
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 15 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| No document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
| | 3 |
| Document type does not allow element "TD" here; assuming missing "TR" start-tag.
| | 207 |
| End tag for element "LI" which is not open.
| | 41 |
| End tag for element "P" which is not open.
| | 352 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/cs697-lectures-f12.pdf, 404 Not Found in:
| | 29 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/cs697-lectures-f11.pdf, 404 Not Found in:
| | 36 |
| This link is broken. The page could not be found on the target web server.
Broken link http://cs.uwaterloo.ca/~kmregan, 404 Not Found in:
| | 375 |
| Avoid specifying a new window as the target of a link with target="_blank".
| WCAG1 AA 10.1
WCAG2 AAA F22
| 112 114 363 28 366 367 370 372 373 375 377 379 382 384 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 36 42 395 396 |
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 9 11 22 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| On long pages, provide a list of contents with links that take users to the corresponding content farther down the page.
| | 1 |
| Provide SUMMARY attributes for data tables (but not for layout tables.)
| WCAG1 AAA 5.5
| 74 |
| Capitalize the first letter of the first word in lists.
| | 54 665 1600 1645 |
| This form control has no associated LABEL element.
| WCAG2 A F68
Section 508 1194.22 (n)
| 54 56 |
| This form has fields without LABEL elements or TITLE attributes.
| Section 508 1194.22 (n)
| 54 |
| Reference not terminated by REFC delimiter.
| | 174 174 |
| NET-enabling start-tag not immediately followed by null end-tag.
| | 217 |
| Document type does not allow element "h1" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 171 171 213 260 |
| Document type does not allow element "h2" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 173 181 192 196 204 215 231 236 248 256 262 |
| Document type does not allow element "h3" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 168 176 178 183 189 198 201 206 210 218 238 245 250 253 264 267 |
| Document type does not allow element "hr" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 169 179 190 194 202 211 234 246 254 258 |
| Document type does not allow element "p" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 151 157 160 164 169 175 177 182 184 193 197 199 205 207 216 219 225 227 228 232
...
|
| End tag for element "b" which is not open.
| | 216 |
| End tag for element "p" which is not open.
| | 122 |
| All radio button groups should be contained in a FIELDSET tag.
| WCAG1 AA 12.3
| 54 |
| Use LABEL tags for each data entry field to show what data is expected.
| | 54 |
| Headings should not contain other headings.
| WCAG1 AA 3.5
WCAG2 A 1.3.1
| 193 197 121 153 155 161 163 166 171 172 178 179 182 184 189 191 199 195 |
| This form control has no associated LABEL element.
| WCAG2 A F68
Section 508 1194.22 (n)
| 54 56 |
| This form has fields without LABEL elements or TITLE attributes.
| Section 508 1194.22 (n)
| 54 |
| Character "<" is the first character of a delimiter but occurred as data.
| | 200 |
| Document type does not allow element "li" here.
| | 147 148 149 150 |
| Document type does not allow element "h1" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 121 153 155 166 171 193 197 |
| Document type does not allow element "h2" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 172 182 189 |
| Document type does not allow element "h3" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 161 163 178 179 184 191 195 199 |
| Document type does not allow element "hr" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 152 154 165 170 181 188 |
| Document type does not allow element "p" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 122 134 145 151 156 157 162 164 167 168 169 173 174 180 183 185 190 192 194 198
...
|
| End tag for "b" omitted, but OMITTAG NO was specified.
| | 143 |
| End tag for "h3" omitted, but OMITTAG NO was specified.
| | 205 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 205 205 205 |
| End tag for element "br" which is not open.
| | 162 |
| All radio button groups should be contained in a FIELDSET tag.
| WCAG1 AA 12.3
| 54 |
| Use LABEL tags for each data entry field to show what data is expected.
| | 54 |
| Headings should not contain other headings.
| WCAG1 AA 3.5
WCAG2 A 1.3.1
| 261 267 268 272 |
| Character "&" is the first character of a delimiter but occurred as data.
| | 252 |
| NET-enabling start-tag not immediately followed by null end-tag.
| | 269 |
| Document type does not allow element "h1" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 260 |
| Document type does not allow element "h2" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 261 272 |
| Document type does not allow element "h3" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 186 187 249 253 254 267 268 |
| Document type does not allow element "hr" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 259 271 |
| Document type does not allow element "p" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 250 257 262 263 273 |
| End tag for "h1" omitted, but OMITTAG NO was specified.
| | 277 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 277 |
| End tag for element "h2" which is not open.
| | 260 |
| End tag for element "p" which is not open.
| | 121 |
| This form control has no associated LABEL element.
| WCAG2 A F68
Section 508 1194.22 (n)
| 54 56 |
| This form has fields without LABEL elements or TITLE attributes.
| Section 508 1194.22 (n)
| 54 |
| Character "<" is the first character of a delimiter but occurred as data.
| | 143 144 145 |
| Document type does not allow element "h1" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 146 149 171 181 189 197 213 221 231 243 |
| Document type does not allow element "h2" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 124 142 147 148 |
| Document type does not allow element "hr" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 170 180 188 196 212 220 230 242 |
| Document type does not allow element "p" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 108 112 117 120 125 129 132 135 139 143 144 145 150 155 160 164 172 182 190 198
...
|
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 253 253 253 253 253 253 253 253 253 253 253 253 253 253 253 253 253 253 253 253
...
|
| End tag for element "a" which is not open.
| | 104 108 |
| All radio button groups should be contained in a FIELDSET tag.
| WCAG1 AA 12.3
| 54 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 148 |
| Use LABEL tags for each data entry field to show what data is expected.
| | 54 |
| The A NAME attribute is deprecated in XHTML 1.0, and is illegal in XHTML 1.1 Strict.
| W3C Deprecated
| 90 |
| This form control has no associated LABEL element.
| WCAG2 A F68
Section 508 1194.22 (n)
| 54 56 |
| This form has fields without LABEL elements or TITLE attributes.
| Section 508 1194.22 (n)
| 54 |
| Required attribute "alt" not specified.
| | 111 125 143 154 164 174 185 196 205 216 224 234 244 253 262 272 280 288 296 305
...
|
| Character "<" is the first character of a delimiter but occurred as data.
| | 111 125 |
| Document type does not allow element "h1" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 158 178 209 228 238 266 276 292 |
| Document type does not allow element "hr" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 157 177 208 227 237 265 275 291 |
| Document type does not allow element "p" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 136 145 159 167 179 188 199 210 219 229 239 247 256 267 277 283 293 299 308 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 316 316 316 |
| End tag for "span" omitted, but OMITTAG NO was specified.
| | 112 126 |
| Avoid specifying a new window as the target of a link with target="_blank".
| WCAG1 AA 10.1
WCAG2 AAA F22
| 109 123 142 153 164 244 174 185 196 205 216 224 234 253 262 272 280 288 296 305
...
|
| All radio button groups should be contained in a FIELDSET tag.
| WCAG1 AA 12.3
| 54 |
| Use LABEL tags for each data entry field to show what data is expected.
| | 54 |
| The A NAME attribute is deprecated in XHTML 1.0, and is illegal in XHTML 1.1 Strict.
| W3C Deprecated
| 90 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 4 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 290 294 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 26 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Document type does not allow element "tr" here.
| | 101 106 112 113 118 123 130 135 140 145 150 155 160 161 166 171 177 181 187 |
| End tag for "tr" omitted, but OMITTAG NO was specified.
| | 188 |
| "tr" not finished but containing element ended.
| | 188 |
| This link is broken. The target web server is unreachable or no longer running at this URL.
Broken link https://uwangel.uwaterloo.ca/uwangel/section/default.asp?id=UW-MCL-C-110805-081256
| | 120 |
| This link is broken. The target web server is unreachable or no longer running at this URL.
Broken link https://uwangel.uwaterloo.ca/uwangel/section/default.asp?id=UW%2DMCL%2DC%2D101105%2D082214
| | 128 |
| This link is broken. The target web server is unreachable or no longer running at this URL.
Broken link https://uwangel.uwaterloo.ca/uwangel/section/default.asp?id=UW-MCL-C-101105-082144
| | 132 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 126 131 151 167 |
| Use relative rather than absolute units in CSS property values.
| WCAG1 AA 3.4
WCAG2 AA 1.4.4
| 7 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 208 214 232 |
| Provide SUMMARY attributes for data tables (but not for layout tables.)
| WCAG1 AAA 5.5
| 89 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 208 214 232 |
| Each A tag must contain text or an IMG with an ALT tag.
| WCAG1 AA 13.1
WCAG2 A 2.4.4
| 33 42 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 2 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 286 |
| This link is broken. The SRC or HREF is an empty string.
| | 111 116 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 121 126 131 136 141 146 151 156 166 171 176 183 188 194 204 209 214 219 224 229
...
|
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 34 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 277 275 278 279 275 278 42 278 274 275 |
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 30 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 59 109 254 107 31 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 78 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~ilyas/pics/colour_RGB.gif,
actual dimensions:
450
x
350 pixels.
| W3C
| 43 |
| Use link text between 3 and 80 characters so it's long enough to be understood, but avoids line wrapping.
| | 146 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 59 109 254 107 31 |
| The A NAME attribute is deprecated in XHTML 1.0, and is illegal in XHTML 1.1 Strict.
| W3C Deprecated
| 109 107 59 254 |
| IMG ALT text should not contain placeholder text like 'picture' or 'spacer'.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F30
| 30 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 2 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 68 |
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 14 21 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| End tag for element "A" which is not open.
| | 45 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 33 52 55 70 10 |
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| An unknown entity has been used. This often happens when ¶m=value is used instead of &param=value in URL query strings.
| HTML Validation Ampersand Problem
| 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
...
|
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 33 52 55 70 10 |
| The IMG ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 30 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 5 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 102 103 124 133 170 180 181 182 187 188 195 196 197 198 101 107 116 117 119 123
...
|
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| No document type declaration; will parse without validation.
| | 1 |
| Document type does not allow element "LINK" here.
| | 3 |
| End tag for element "UL" which is not open.
| | 174 |
| An attribute value must be a literal unless it contains only name characters.
| | 21 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/~glabahn/Papers/sparse-gll-interp.pdf, 404 Not Found in:
| | 133 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 6 95 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~glabahn/George-beard.JPG,
actual dimensions:
2848
x
4288 pixels.
| W3C
| 15 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 6 95 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 2 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 36 |
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 37 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 9 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| End tag for element "UL" which is not open.
| | 50 |
| This link is broken. The target web server is unreachable or no longer running at this URL.
Broken link http://monod.uwaterloo.ca/papers/,
| | 57 37 |
| Each section of content should begin with a heading tag (H1, H2, H3), but this page has no heading tags.
| WCAG1 AA 12.3
WCAG2 AAA 2.4.10
| 1 |
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 9 |
| The BODY ALINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 9 |
| The BODY LINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 9 |
| The BODY TEXT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 9 |
| The BODY VLINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 9 |
| The IMG BORDER attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 14 28 |
| The P ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 17 |
| IMG ALT text must not be the same as the image file name.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F30
| 949 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 1 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 1169 1203 1097 1134 1238 1159 1228 1212 1117 1090 1186 1003 1150 1124 1142 1082 1220 1177 1247 1255
...
|
| Required attribute "type" not specified.
| | 337 |
| Value of fixed attribute "xmlns" not equal to default.
| | 5 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 8 9 9 10 11 12 13 43 44 891 891 891 893 895 895 895 895 900 905 908
...
|
| Element "o:p" undefined.
| | 901 906 907 912 917 921 925 929 931 936 940 944 957 963 976 980 998 1001 1005 1008
...
|
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/~yuying/Courses/CS870_12/870.html, 404 Not Found in:
| | 1011 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 1090 1150 1082 1107 |
| If you set any of the colors on the BODY tag you must set all of them.
| WCAG1 AAA 2.2
WCAG2 AA F24
| 891 |
| This page has no privacy policy. If your web server logs visits, then every page reachable by a search engine should have a privacy policy explaining what is logged and how the logs are used.
| EU Privacy Regulations
| 1 |
| Provide a search option on each page of content-rich Web sites.
| | 1 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~yuying/Li_05web.jpg,
actual dimensions:
154
x
216 pixels.
| W3C
| 949 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 891 |
| IMG ALT text must not be the same as the image file name.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F30
| 28 24 428 |
| Document type does not allow element "ADDRESS" here.
| | 751 |
| Document type does not allow element "DL" here.
| | 545 548 588 591 630 732 |
| Document type does not allow element "DT" here.
| | 544 587 |
| Document type does not allow element "HR" here.
| | 730 749 |
| Document type does not allow element "OL" here.
| | 330 456 |
| Document type does not allow element "DL" here; assuming missing "DD" start-tag.
| | 251 275 |
| Document type does not allow element "DT" here; assuming missing "DL" start-tag.
| | 250 |
| Document type does not allow element "H1" here; assuming missing "A" start-tag.
| | 288 |
| End tag for "A" omitted, but its declaration does not permit this.
| | 755 |
| End tag for "DL" omitted, but its declaration does not permit this.
| | 755 |
| End tag for "OL" omitted, but its declaration does not permit this.
| | 61 |
| "OL" not finished but containing element ended.
| | 61 |
| End tag for element "DT" which is not open.
| | 258 282 737 744 |
| End tag for element "H2" which is not open.
| | 68 |
| End tag for element "OL" which is not open.
| | 83 |
| The COMPACT attribute is not supported by Firefox.
| Firefox
| 630 |
| There is no attribute "ALIGN".
| | 20 23 |
| There is no attribute "CLASS".
| | 34 37 |
| Links in Flash movies should be duplicated as plain text links.
The link http://s.ytimg.com/yts/swfbin/cps-vflhLDXa4.swf only appears in the Flash movie.
| WCAG1 A 1.1
Section 508 1194.22 (a)
| 48 |
| Identify row and column headers in data tables using TH elements.
| WCAG1 A 5.1
Section 508 1194.22 (g)
WCAG2 A H51
| 117 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 218 213 |
| This page has a Flash movie which does not specify a download link.
| Section 508 1194.22 (m)
| 48 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 61 |
| Many search engines, including Bing, are unable to follow links or index content embedded in Flash.
The link http://s.ytimg.com/yts/swfbin/cps-vflhLDXa4.swf only appears in the Flash movie.
| Google
Bing
| 48 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Document type does not allow element "tr" here.
| | 122 125 126 129 134 139 144 147 150 154 160 167 170 173 176 179 182 185 |
| End tag for "tr" omitted, but OMITTAG NO was specified.
| | 189 189 |
| "tr" not finished but containing element ended.
| | 189 189 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 55 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 16 23 59 109 201 |
| Provide a search option on each page of content-rich Web sites.
| | 1 |
| Provide SUMMARY attributes for data tables (but not for layout tables.)
| WCAG1 AAA 5.5
| 117 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 16 23 59 109 201 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 32 45 12 88 27 56 72 95 116 191 564 576 78 84 106 125 136 148 161 174 |
| Provide redundant text links for each active region of a server-side image map.
| WCAG1 A 1.2
Section 508 1194.22 (e)
WCAG2 A 2.1.1
| 32 |
| Each A tag must contain text or an IMG with an ALT tag.
| WCAG1 AA 13.1
WCAG2 A 2.4.4
| 401 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 2 |
| Avoid animated images over 5 seconds long that can't be paused or stopped.
Image: https://cs.uwaterloo.ca/~binma/_themes/bin-s-canvas/acnvbul1.gif,
| WCAG1 AA 7.3
WCAG2 A F7
| 88 78 84 106 125 136 148 161 174 |
| Use client-side image maps instead of server-side image maps, except where the regions cannot be defined with an available geometric shape.
| WCAG1 A 9.1
Section 508 1194.22 (f)
WCAG2 A 2.1.1
| 32 |
| This link is broken. The target anchor does not exist or is commented out.
| | 17 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 270 354 367 418 475 425 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 10 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Value of attribute "NAME" must be a single token.
| | 8 |
| Required attribute "ALT" not specified.
| | 12 27 33 45 56 72 78 84 88 95 106 116 125 136 148 161 174 191 564 576 |
| Required attribute "TYPE" not specified.
| | 577 |
| Value of attribute "ALIGN" cannot be "TOP"; must be one of "LEFT", "CENTER", "RIGHT", "JUSTIFY", "CHAR".
| | 30 31 35 |
| Invalid formal public identifier "-//w3c//dtd html 4.0 transitional//en": invalid public text class.
| | 1 |
| Document type does not allow element "LI" here.
| | 205 |
| Document type does not allow element "CENTER" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 12 15 |
| Document type does not allow element "LI" here; missing one of "UL", "OL", "DIR", "MENU" start-tag.
| | 206 207 211 212 213 214 215 220 225 230 239 243 247 251 256 264 269 274 279 284
...
|
| Document type does not allow element "OL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 197 |
| Document type does not allow element "P" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 27 56 57 95 99 116 117 191 193 564 566 576 |
| Document type does not allow element "TABLE" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 29 |
| Document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 58 |
| Start tag for "LI" omitted, but its declaration does not permit this.
| | 199 |
| End tag for element "A" which is not open.
| | 401 |
| End tag for element "FONT" which is not open.
| | 76 124 |
| End tag for element "TD" which is not open.
| | 124 |
| End tag for element "TR" which is not open.
| | 124 |
| Character "\" not allowed in attribute specification list.
| | 106 |
| This link is broken. The target web server is unreachable or no longer running at this URL.
Broken link http://monod.uwaterloo.ca/champs/software.html,
| | 150 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.uwaterloo.edu/, in:
| | 42 |
| Avoid deprecated features of W3C technologies.
| WCAG1 AA 11.2
| 12 15 542 |
| Each section of content should begin with a heading tag (H1, H2, H3), but this page has no heading tags.
| WCAG1 AA 12.3
WCAG2 AAA 2.4.10
| 1 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 126 129 137 140 149 152 162 165 175 179 199 568 542 16 543 546 547 548 549 551
...
|
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 88 78 84 106 125 136 148 161 174 |
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Use background images sparingly and make sure they are simple, especially behind text.
| | 10 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~binma/icon08-small.jpg,
actual dimensions:
201
x
300 pixels.
| W3C
| 32 |
| An unknown entity has been used. This often happens when ¶m=value is used instead of &param=value in URL query strings.
| HTML Validation Ampersand Problem
| 441 441 441 |
| The BODY BACKGROUND attribute is obsolete and not supported by Firefox 7 or later.
| Firefox
| 10 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 10 |
| Use link text between 3 and 80 characters so it's long enough to be understood, but avoids line wrapping.
| | 367 456 496 425 |
| Use at least a 12-point font on all Web pages.
| | 542 543 546 547 548 549 551 553 555 557 559 561 |
| The BODY ALINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 10 |
| The BODY BACKGROUND attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 10 |
| The BODY LINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 10 |
| The BODY TEXT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 10 |
| The BODY VLINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 10 |
| CENTER element is deprecated in HTML 4.01.
| W3C Deprecated
| 12 15 |
| FONT element is deprecated in HTML 4.01.
| W3C Deprecated
| 126 129 137 140 149 152 162 165 175 179 199 568 542 16 543 546 547 548 549 551
...
|
| The IMG HSPACE attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 88 78 84 106 125 136 148 161 174 |
| The P ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 27 56 72 95 116 191 564 576 |
| The TD WIDTH attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 88 78 84 106 125 136 148 161 174 88 78 84 125 136 148 161 174 |
| U element is deprecated in HTML 4.01.
| W3C Deprecated
| 542 |
| Capitalize the first letter of the first word in lists.
| | 335 404 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 12 |
| Each A tag must contain text or an IMG with an ALT tag.
| WCAG1 AA 13.1
WCAG2 A 2.4.4
| 12 |
| Identify row and column headers in data tables using TH elements.
| WCAG1 A 5.1
Section 508 1194.22 (g)
WCAG2 A H51
| 14 |
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 148 149 150 |
| Invalid formal public identifier "-//w3c//dtd html 4.0 transitional//en": invalid public text class.
| | 1 |
| DTD did not contain element declaration for document type name.
| HTML Validation Doctypes
| 1 |
| Cannot generate system identifier for public text "-//w3c//dtd html 4.0 transitional//en".
| | 1 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.student.math/%7Ecs486 in:
| | 124 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.student.math/%7Ecs251 in:
| | 134 |
| This link is broken. The name of the target web server not found in DNS.
Broken link http://www.undergrad.math.uwaterloo.ca/%7Ecs134/index.html in:
| | 142 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 66 77 89 |
| An unknown entity has been used. This often happens when ¶m=value is used instead of &param=value in URL query strings.
| HTML Validation Ampersand Problem
| 1 |
| Provide SUMMARY attributes for data tables (but not for layout tables.)
| WCAG1 AAA 5.5
| 14 |
| The HR SIZE attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 93 145 |
| The IMG ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 12 |
| The IMG BORDER attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 12 |
| The TD NOWRAP attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 17 50 |
| DTD did not contain element declaration for document type name, so no further validation errors will be reported.
| HTML Validation Doctypes
| 1 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 19 20 21 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 3 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 17 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Required attribute "ALT" not specified.
| | 19 20 21 |
| Document type does not allow element "HR" here; missing one of "OBJECT", "MAP", "BUTTON" start-tag.
| | 54 |
| Document type does not allow element "P" here; missing one of "OBJECT", "MAP", "BUTTON" start-tag.
| | 34 37 39 45 48 51 55 56 57 58 59 60 61 62 |
| End tag for "H4" omitted, but its declaration does not permit this.
| | 64 |
| End tag for element "H3" which is not open.
| | 53 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/icons/back.xbm, 404 Not Found in:
| | 63 63 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 29 |
| There is no attribute "LENGTH".
| | 19 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 29 |
| Use the LANG attribute to identify the language of the page.
| WCAG1 AAA 4.3
WCAG2 A 3.1.1
| 2 |
| This form control has no associated LABEL element.
| WCAG2 A F68
Section 508 1194.22 (n)
| 64 66 68 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 57 124 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 117 |
| This form has fields without LABEL elements or TITLE attributes.
| Section 508 1194.22 (n)
| 64 66 |
| Users should be able to quickly look at each link and tell where it goes.
Link text:
"here"
| | 115 113 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Character "<" is the first character of a delimiter but occurred as data.
| | 133 |
| NET-enabling start-tag not immediately followed by null end-tag.
| | 126 127 |
| All radio button groups should be contained in a FIELDSET tag.
| WCAG1 AA 12.3
| 64 66 |
| Don't use generic text like "Click Here" or "Read More" in link text, because it says nothing about the link target when read out by a screen reader.
Link text:
"here"
| WCAG1 AA 13.1
WCAG2 AAA F84
| 115 113 |
| Use LABEL tags for each data entry field to show what data is expected.
| | 64 66 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~ian/IanFrPicture.JPG,
actual dimensions:
877
x
347 pixels.
| W3C
| 107 |
| The A NAME attribute is deprecated in XHTML 1.0, and is illegal in XHTML 1.1 Strict.
| W3C Deprecated
| 97 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 40 |
| Headings should not contain other headings.
| WCAG1 AA 3.5
WCAG2 A 1.3.1
| 44 61 99 124 137 |
| Avoid animated images over 5 seconds long that can't be paused or stopped.
Image: https://cs.uwaterloo.ca/~imunro/acnvbul1.gif,
| WCAG1 AA 7.3
WCAG2 A F7
| 67 73 79 85 105 111 117 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 18 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 132 140 141 |
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 131 |
| Have a link labeled 'Home' on every page on the site, except for the home page.
| | 1 |
| Value of attribute "NAME" must be a single token.
| | 8 |
| Required attribute "ALT" not specified.
| | 40 |
| No document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
| | 1 |
| Document type does not allow element "ADDRESS" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 33 |
| Document type does not allow element "H3" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 61 99 124 137 |
| Document type does not allow element "H4" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 44 |
| Document type does not allow element "P" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 45 127 128 132 133 134 135 140 141 |
| Document type does not allow element "TABLE" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 64 102 |
| End tag for "FONT" omitted, but its declaration does not permit this.
| | 149 |
| End tag for "H2" omitted, but its declaration does not permit this.
| | 149 |
| End tag for "H4" omitted, but its declaration does not permit this.
| | 45 |
| End tag for element "P" which is not open.
| | 131 |
| End tag for element "TD" which is not open.
| | 40 |
| This link is broken. The target web server is unreachable or no longer running at this URL.
Broken link http://monod.uwaterloo.ca/,
| | 56 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 13 22 32 63 90 101 122 126 139 21 23 61 99 124 137 68 74 80 86 106
...
|
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 66 72 78 84 104 110 116 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 61 99 124 137 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 44 |
| Use background images sparingly and make sure they are simple, especially behind text.
| | 11 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~imunro/ian_large.jpg,
actual dimensions:
608
x
710 pixels.
| W3C
| 15 |
| An unknown entity has been used. This often happens when ¶m=value is used instead of &param=value in URL query strings.
| HTML Validation Ampersand Problem
| 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29
...
|
| The BODY BACKGROUND attribute is obsolete and not supported by Firefox 7 or later.
| Firefox
| 11 |
| The ALINK and VLINK attributes are not supported by BlackBerry 5.0.
| BlackBerry
| 11 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 61 99 124 137 |
| Required attribute "type" not specified.
| | 37 |
| Value of fixed attribute "xmlns" not equal to default.
| | 3 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 5 6 7 8 8 9 10 11 118 118 119 |
| Document type does not allow element "h1" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 170 180 233 |
| Document type does not allow element "p" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 251 |
| Document type does not allow element "ul" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 171 181 234 |
| Document type does not allow element "blockquote" here; assuming missing "li" start-tag.
| | 225 |
| End tag for "li" omitted, but OMITTAG NO was specified.
| | 232 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 136 252 |
| End tag for element "p" which is not open.
| | 169 |
| APPLET tags must have an ALT attribute and alternative content.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A H35
| 365 |
| OBJECT tags should contain alternative content.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A 1.1.1
| 335 |
| EMBED tags must have an associated NOEMBED tag.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A H46
| 339 |
| EMBED tags must have a non-blank ALT tag.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A H35
| 339 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 391 81 84 92 381 386 261 262 303 255 302 |
| Each A tag must contain text or an IMG with an ALT tag.
| WCAG1 AA 13.1
WCAG2 A 2.4.4
| 381 386 262 65 314 61 61 302 61 61 61 61 61 61 61 61 |
| Ensure that pages are usable when scripts, applets, or other programmatic objects are turned off or not supported.
| WCAG1 A 6.3
| 365 |
| This image has been updated without updating the ALT attribute on the page.
Page last modified Wed, 08 May 2013 15:00:03 GMT. Image last modified Thu, 23 May 2013 17:41:44 GMT
| WCAG2 A F20
| 394 102 |
| Do not use filenames, placeholders or empty text as text alternatives for timed media.
| WCAG2 A F30
| 335 |
| Using ALT text which duplicates link text in the same link or the following link results in screen readers stuttering as the same text is read out twice.
| WCAG2 A H2
| 101 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 58 335 347 391 381 360 380 103 386 394 102 382 383 |
| Java is not supported on iPhone and iPad.
| iPhone/iPad
| 365 |
| This link is broken. The target anchor does not exist or is commented out.
| | 51 |
| A tracking graphic (web beacon) has been detected on this page but no obvious privacy policy was found. Companies in the EU using tracking graphics must comply with the Privacy and Electronic Communications (EC Directive) Regulations 2003 by providing a privacy or cookie policy.
| EU Privacy Regulations
| 391 381 360 380 386 394 382 383 |
| This page has links to a PDF file, but does not provide a link to download Acrobat Reader.
| Section 508 1194.22 (m)
| 210 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 50 |
| Users should be able to quickly look at each link and tell where it goes.
Link text:
"here"
| | 149 117 317 320 315 |
| Required attribute "alt" not specified.
| | 81 84 92 255 261 262 302 303 381 386 391 |
| Value of attribute "align" cannot be "absmiddle"; must be one of "top", "middle", "bottom", "left", "right".
| | 65 101 255 |
| Value of attribute "align" cannot be "baseline"; must be one of "top", "middle", "bottom", "left", "right".
| | 302 303 |
| An attribute value specification must be an attribute value literal unless SHORTTAG YES is specified.
| | 102 302 303 332 332 345 345 365 |
| S separator in comment declaration.
| | 334 |
| Reference not terminated by REFC delimiter.
| | 216 216 216 216 216 216 216 216 216 216 216 216 216 216 217 234 234 234 259 259
...
|
| Reference to external entity in attribute value.
| | 216 216 216 216 216 216 216 216 216 216 216 216 216 216 217 234 234 234 259 259
...
|
| Character "&" is the first character of a delimiter but occurred as data.
| | 259 314 314 |
| NET-enabling start-tag not immediately followed by null end-tag.
| | 102 |
| Invalid comment declaration: found name character outside comment but inside comment declaration.
| | 334 |
| Document type does not allow element "h3" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 389 |
| Document type does not allow element "h4" here; assuming missing "li" start-tag.
| | 253 270 281 288 |
| Document type does not allow element "ul" here; assuming missing "li" start-tag.
| | 152 |
| End tag for "li" omitted, but OMITTAG NO was specified.
| | 155 279 286 293 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 259 391 396 |
| End tag for "ul" omitted, but OMITTAG NO was specified.
| | 266 |
| Element "BR" undefined.
| | 302 303 |
| Element "embed" undefined.
| | 339 |
| End tag for element "a" which is not open.
| | 102 |
| End tag for element "center" which is not open.
| | 379 |
| End tag for element "p" which is not open.
| | 256 261 263 |
| End tag for element "ul" which is not open.
| | 268 294 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/~tozsu/tl_curve_white.gif, 404 Not Found in:
| | 55 55 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/~tozsu/tr_curve_white.gif, 404 Not Found in:
| | 55 55 |
| This link is broken. The page could not be found on the target web server.
Broken link https://cs.uwaterloo.ca/~tozsu/dmmustin@cs.uwaterloo.ca, 404 Not Found in:
| | 88 |
| Avoid specifying a new window as the target of a link with target="_blank".
| WCAG1 AA 10.1
WCAG2 AAA F22
| 380 382 383 386 255 258 257 261 283 284 262 272 274 153 207 210 211 228 229 230
...
|
| Avoid deprecated features of W3C technologies.
| WCAG1 AA 11.2
| 111 114 365 |
| Don't use generic text like "Click Here" or "Read More" in link text, because it says nothing about the link target when read out by a screen reader.
Link text:
"here"
| WCAG1 AA 13.1
WCAG2 AAA F84
| 149 117 317 320 315 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 263 189 320 315 |
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 332 345 76 99 101 102 103 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 57 |
| Avoid underlined text - people will click on it and think it's a broken link.
| | 111 114 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
https://cs.uwaterloo.ca/~tozsu/gifs/ozsu06-web.jpg,
actual dimensions:
154
x
216 pixels.
| W3C
| 65 262 303 255 |
| There is no attribute "CLEAR".
| | 302 |
| There is no attribute "FlashVars".
| | 339 |
| There is no attribute "height".
| | 339 |
| There is no attribute "onerror".
| | 394 |
| There is no attribute "pluginspage".
| | 339 |
| There is no attribute "quality".
| | 339 |
| There is no attribute "src".
| | 339 |
| There is no attribute "type".
| | 339 |
| There is no attribute "width".
| | 339 |
| An unknown entity has been used. This often happens when ¶m=value is used instead of &param=value in URL query strings.
| HTML Validation Ampersand Problem
| 216 216 216 216 216 216 216 216 216 216 216 216 216 216 216 216 216 216 216 216
...
|
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 57 |
| The A NAME attribute is deprecated in XHTML 1.0, and is illegal in XHTML 1.1 Strict.
| W3C Deprecated
| 126 144 205 57 251 109 162 225 241 300 312 |
| The APPLET NAME attribute is deprecated in XHTML 1.0.
| W3C Deprecated
| 365 |
| The IMG NAME attribute is deprecated in XHTML 1.0.
| W3C Deprecated
| 65 |
| Internet Explorer, Chrome and Firefox display a security warning when a secure https:// web page includes http:// content.
| Internet Explorer
Chrome
Firefox
| 124 131 138 |
| ID "pageName" already defined.
| | 47 79 |
| Document type does not allow element "li" here; missing one of "ul", "ol", "menu", "dir" start-tag.
| | 102 103 |
| Document type does not allow element "ul" here; assuming missing "dd" start-tag.
| | 86 |
| Document type does not allow element "ul" here; assuming missing "li" start-tag.
| | 87 94 |
| End tag for "blockquote" omitted, but OMITTAG NO was specified.
| | 46 |
| End tag for "dd" omitted, but OMITTAG NO was specified.
| | 106 |
| End tag for "li" omitted, but OMITTAG NO was specified.
| | 104 105 |
| End tag for element "li" which is not open.
| | 42 |
| End tag for element "ul" which is not open.
| | 43 |
| This page has duplicate IDs which cause problems in screen readers.
| WCAG2 A F77
| 47 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 146 147 |
| The IMG WIDTH and HEIGHT attributes don't match the actual image size. This means the image will be scaled or distorted.
Image
http://db.uwaterloo.ca/images/uw_button.jpg,
actual dimensions:
90
x
30 pixels.
| W3C
| 124 131 |
| Use at least a 12-point font on all Web pages.
| | 146 147 |
| ID "pageName" already defined.
| | 189 226 |
| Document type does not allow element "li" here.
| | 197 203 |
| Document type does not allow element "br" here; missing one of "dt", "dd" start-tag.
| | 196 202 |
| Document type does not allow element "li" here; missing one of "ul", "ol", "menu", "dir" start-tag.
| | 87 114 214 |
| Document type does not allow element "a" here; assuming missing "li" start-tag.
| | 85 |
| Document type does not allow element "br" here; assuming missing "li" start-tag.
| | 212 |
| Document type does not allow element "dd" here; assuming missing "dl" start-tag.
| | 193 198 215 |
| End tag for "dd" omitted, but OMITTAG NO was specified.
| | 211 |
| End tag for "dl" omitted, but OMITTAG NO was specified.
| | 201 211 220 |
| End tag for "li" omitted, but OMITTAG NO was specified.
| | 137 221 |
| End tag for element "b" which is not open.
| | 59 |
| End tag for element "dd" which is not open.
| | 213 |
| End tag for element "span" which is not open.
| | 138 216 |
| This page has duplicate IDs which cause problems in screen readers.
| WCAG2 A F77
| 189 |
| Avoid underlined text - people will click on it and think it's a broken link.
| | 39 87 114 31 |
| Required attribute "TYPE" not specified.
| | 53 |
| Invalid formal public identifier "-//w3c//dtd html 4.0 transitional//en": invalid public text class.
| | 1 |
| "ENDIF" is not a reserved name.
| | 463 472 503 521 539 556 562 568 595 613 631 675 693 711 727 733 739 766 785 804
...
|
| "IF" is not a reserved name.
| | 462 471 502 520 538 556 561 567 594 612 630 674 692 710 727 732 738 757 765 784
...
|
| End tag for "B" omitted, but its declaration does not permit this.
| | 827 |
| End tag for "DIV" omitted, but its declaration does not permit this.
| | 959 |
| End tag for "I" omitted, but its declaration does not permit this.
| | 827 |
| End tag for "SPAN" omitted, but its declaration does not permit this.
| | 728 748 832 839 844 849 850 |
| Element "O:P" undefined.
| | 456 459 463 472 474 478 486 503 521 539 557 562 568 577 595 613 631 657 675 693
...
|
| End tag for element "B" which is not open.
| | 828 |
| End tag for element "I" which is not open.
| | 828 |
| End tag for element "O:P" which is not open.
| | 758 |
| End tag for element "SPAN" which is not open.
| | 513 833 840 845 849 850 |
| The page-break-after CSS property is not supported by Firefox.
| Firefox
| 92 106 119 130 |
| The :visited CSS selector only supports limited style changes.
| Firefox
Chrome
Safari
| 212 |
| Don't use fonts only available on Macs, but not Windows, and vice versa.
| | 77 84 98 112 123 134 145 155 162 169 179 190 199 |
| The BODY LINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 452 |
| The BODY VLINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 452 |
| The DIV ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 490 507 525 543 561 581 599 617 635 661 679 697 715 732 752 770 789 808 |
| FONT element is deprecated in HTML 4.01.
| W3C Deprecated
| 958 |
| The HR ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 947 |
| The OL TYPE attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 926 |
| The TD WIDTH attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 484 489 493 500 506 510 518 524 528 536 542 546 554 560 565 573 580 584 592 598
...
|
| Property mso-font-charset doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 58 65 72 |
| Property mso-font-kerning doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 97 |
| Property mso-font-pitch doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 60 67 74 |
| Property mso-font-signature doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 61 68 75 |
| Property mso-footer-margin doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 220 |
| Property mso-generic-font-family doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 59 66 73 |
| Property mso-header doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 222 |
| Property mso-header-margin doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 219 |
| Property mso-outline-level doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 93 107 120 131 141 152 |
| Property mso-pagination doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 81 91 105 118 129 140 151 158 165 176 186 196 205 |
| Property mso-paper-source doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 223 |
| Property mso-style-next doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 85 99 113 124 135 146 |
| Property mso-style-parent doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 78 |
| Property mso-title-page doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 221 |
| Property page doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 225 |
| Property panose-1 doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 57 64 71 |
| Property size doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 217 |
| Property tab-stops doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 94 108 159 166 |
| Property text-underline doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 211 215 |
| Required attribute "TYPE" not specified.
| | 29 |
| Invalid formal public identifier "-//w3c//dtd html 4.0 transitional//en": invalid public text class.
| | 1 |
| Document type does not allow element "BR" here.
| | 60 |
| Document type does not allow element "CENTER" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 59 |
| Document type does not allow element "TBODY" here; assuming missing "TABLE" start-tag.
| | 59 |
| End tag for "TABLE" omitted, but its declaration does not permit this.
| | 60 |
| End tag for "TBODY" which is not finished.
| | 60 |
| Element "O:P" undefined.
| | 440 |
| Avoid underlined text - people will click on it and think it's a broken link.
| | 75 69 |
| Use a familiar font (Times, Georgia, Arial, Helvetica or Verdana) to achieve the best possible reading speed.
| | 31 |
| Don't use fonts only available on Macs, but not Windows, and vice versa.
| | 31 |
| The DIV ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 82 97 112 126 140 154 168 183 187 199 213 227 231 243 257 272 287 291 303 317
...
|
| FONT element is deprecated in HTML 4.01.
| W3C Deprecated
| 590 606 368 351 187 231 291 321 397 445 547 563 579 |
| The HR ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 595 |
| The TD WIDTH attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 64 68 73 81 85 90 96 100 105 111 115 119 125 129 133 139 143 147 153 157
...
|
| U element is deprecated in HTML 4.01.
| W3C Deprecated
| 75 69 |
| Property mso-fareast-font-family doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 38 |
| Property mso-footer-margin doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 43 |
| Property mso-header-margin doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 42 |
| Property mso-pagination doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 35 |
| Property mso-paper-source doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 44 |
| Property mso-style-parent doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 32 |
| Property page doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 46 |
| Property size doesn't exist in the CSS 2.1 or CSS 3 recommendations.
| | 40 |
| Headings should not contain other headings.
| WCAG1 AA 3.5
WCAG2 A 1.3.1
| 8 11 12 13 14 15 16 |
| Users should be able to quickly look at each link and tell where it goes.
Link text:
"here"
| | 48 49 |
| Required attribute "ALT" not specified.
| | 9 74 78 82 |
| Document type does not allow element "CENTER" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 20 |
| Document type does not allow element "H1" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 8 11 12 13 14 15 16 |
| Document type does not allow element "HR" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 19 45 |
| Document type does not allow element "BLOCKQUOTE" here; assuming missing "LI" start-tag.
| | 60 |
| End tag for element "P" which is not open.
| | 69 |
| Don't use generic text like "Click Here" or "Read More" in link text, because it says nothing about the link target when read out by a screen reader.
Link text:
"here"
| WCAG1 AA 13.1
WCAG2 AAA F84
| 48 49 |
| The FONT element should not be used in accessible documents.
| WCAG1 AA 11.2
| 56 23 27 30 37 42 35 49 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 11 12 14 15 19 45 |
| There is no attribute "NATURALSIZEFLAG".
| | 9 |
| Use relative rather than absolute units in FONT SIZE attributes.
| WCAG1 AA 3.4
WCAG2 A 1.4.4
| 25 |
| The BLINK element should not be used in accessible documents.
| WCAG1 AA 7.2
Section 508 1194.22 (j)
WCAG2 A F47
| 29 |
| Required attribute "ALT" not specified.
| | 11 |
| Invalid formal public identifier "-//w3c//dtd html 4.0 transitional//en": invalid public text class.
| | 1 |
| Document type does not allow element "P" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 16 28 |
| Document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 21 |
| Element "BLINK" undefined.
| | 29 |
| An attribute value must be a literal unless it contains only name characters.
| | 16 32 36 38 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 10 12 |
| There is no attribute "NATURALSIZEFLAG".
| | 11 |
| The BLINK tag is a Netscape extension, and is only supported by Firefox and Opera.
| Internet Explorer
Safari
iPhone/iPad
Chrome
| 29 |
| CENTER element is deprecated in HTML 4.01.
| W3C Deprecated
| 9 60 |
| FONT element is deprecated in HTML 4.01.
| W3C Deprecated
| 32 34 36 38 16 29 25 20 |
| The IMG ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 11 |
| The IMG BORDER attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 11 65 72 |
| The IMG VSPACE attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 11 |
| The TD WIDTH attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 63 70 77 |
| The UL TYPE attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 30 |
| Syntax of attribute value does not conform to declared value.
| | 86 602 613 633 644 699 948 |
| Value of attribute "TYPE" cannot be ""; must be one of "DISC", "SQUARE", "CIRCLE".
| | 86 602 613 633 644 699 948 |
| Invalid formal public identifier "-//w3c//dtd html 4.0 transitional//en": invalid public text class.
| | 1 |
| Document type does not allow element "LI" here; missing one of "UL", "OL", "DIR", "MENU" start-tag.
| | 16 19 22 25 28 31 34 35 38 41 44 47 50 |
| Start tag for "LI" omitted, but its declaration does not permit this.
| | 67 87 602 613 634 644 699 949 |
| End tag for element "B" which is not open.
| | 289 |
| End tag for element "BR" which is not open.
| | 170 172 174 176 |
| End tag for element "FONT" which is not open.
| | 165 166 |
| An attribute value must be a literal unless it contains only name characters.
| | 12 66 85 183 184 415 529 601 612 621 632 643 698 947 1053 |
| There is no attribute "BACK".
| | 147 |
| There is no attribute "PTSIZE".
| | 147 |
| The BODY ALINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 9 |
| The BODY LINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 9 |
| The BODY TEXT attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 9 |
| The BODY VLINK attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 9 |
| CENTER element is deprecated in HTML 4.01.
| W3C Deprecated
| 11 63 83 598 608 619 628 639 697 946 1046 1048 1109 179 526 |
| FONT element is deprecated in HTML 4.01.
| W3C Deprecated
| 425 428 431 647 147 433 434 436 12 424 184 426 1053 183 429 12 643 698 529 85
...
|
| The IMG BORDER attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 13 64 180 527 609 640 1049 599 11 83 620 629 697 946 |
| The P ALIGN attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 621 630 |
| U element is deprecated in HTML 4.01.
| W3C Deprecated
| 648 520 1024 520 |
| The UL TYPE attribute is deprecated in HTML 4.01.
| W3C Deprecated
| 86 602 613 633 644 699 948 |
| Google, Bing and Yahoo recommend that all pages have a non-blank TITLE tag.
| Google
Yahoo
Bing
| 5 |
| "NOSCROLL" is not a member of a group specified for any attribute.
| | 128 132 |
| Required attribute "TYPE" not specified.
| | 7 |
| Non SGML character number 11.
| | 5 5 |
| Document type does not allow element "HEAD" here.
| | 4 |
| Document type does not allow element "NOFRAMES" here.
| | 138 |
| End tag for "SCRIPT" omitted, but its declaration does not permit this.
| | 114 |
| "HEAD" not finished but containing element ended.
| | 114 |
| End tag for element "BODY" which is not open.
| | 113 |
| End tag for element "CENTER" which is not open.
| | 112 |
| End tag for element "EMBED" which is not open.
| | 110 |
| End tag for element "HEAD" which is not open.
| | 124 |
| End tag for element "HTML" which is not open.
| | 147 |
| End tag for element "OBJECT" which is not open.
| | 111 |
| End tag for element "SCRIPT" which is not open.
| | 123 |
| There is no attribute "BORDER".
| | 128 |
| There is no attribute "MARGINHEIGHT".
| | 128 |
| There is no attribute "MARGINWIDTH".
| | 128 |
| There is no attribute "ONLOAD".
| | 126 |
| Google, Bing and Yahoo recommend that all pages have a non-blank TITLE tag.
| Google
Yahoo
Bing
| 5 |
| "NOSCROLL" is not a member of a group specified for any attribute.
| | 128 132 |
| Required attribute "TYPE" not specified.
| | 7 |
| Non SGML character number 11.
| | 5 |
| Document type does not allow element "HEAD" here.
| | 4 |
| Document type does not allow element "NOFRAMES" here.
| | 138 |
| End tag for "SCRIPT" omitted, but its declaration does not permit this.
| | 114 |
| "HEAD" not finished but containing element ended.
| | 114 |
| End tag for element "BODY" which is not open.
| | 113 |
| End tag for element "CENTER" which is not open.
| | 112 |
| End tag for element "EMBED" which is not open.
| | 110 |
| End tag for element "HEAD" which is not open.
| | 124 |
| End tag for element "HTML" which is not open.
| | 147 |
| End tag for element "OBJECT" which is not open.
| | 111 |
| End tag for element "SCRIPT" which is not open.
| | 123 |
| There is no attribute "BORDER".
| | 128 |
| There is no attribute "MARGINHEIGHT".
| | 128 |
| There is no attribute "MARGINWIDTH".
| | 128 |
| There is no attribute "ONLOAD".
| | 126 |
| No TITLE attributes found for the frames on these pages.
| WCAG1 A 12.1
Section 508 1194.22 (i)
WCAG2 A 2.4.1
| 9 11 12 |
| No TITLE attributes found for the FRAMESETs on these pages.
| WCAG1 A 12.1
Section 508 1194.22 (i)
| 8 10 |
| Many search engines are unable to follow links in framesets.
| Google
| 8 10 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 15 |
| No document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
| | 1 |
| Document type does not allow element "BODY" here.
| | 15 |
| End tag for "HTML" which is not finished.
| | 20 |
| Element "FRAME" undefined.
| | 9 11 12 |
| Element "FRAMESET" undefined.
| | 8 10 |
| An attribute value must be a literal unless it contains only name characters.
| | 8 10 |
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 8 10 |
| There is no attribute "BORDER".
| | 8 |
| There is no attribute "BORDERCOLOR".
| | 8 |
| There is no attribute "COLS".
| | 10 |
| There is no attribute "FRAMESPACING".
| | 8 |
| There is no attribute "MARGINHEIGHT".
| | 9 |
| There is no attribute "MARGINWIDTH".
| | 9 |
| There is no attribute "NAME".
| | 9 |
| There is no attribute "ROWS".
| | 8 |
| There is no attribute "SCROLLING".
| | 11 |
| There is no attribute "SRC".
| | 9 |
| The BORDERCOLOR, BORDERCOLORDARK and BORDERCOLORLIGHT attributes are IE specific extensions.
| Firefox
Safari
iPhone/iPad
Opera
Chrome
BlackBerry
Android
| 8 10 |
| This link is broken. The target anchor does not exist or is commented out.
| | 4898 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/cosu04.pdf, 401 Unauthorized in:
| | 86 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/gaio96.pdf, 401 Unauthorized in:
| | 334 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/dagr95.pdf, 401 Unauthorized in:
| | 351 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/ngfa91.pdf, 401 Unauthorized in:
| | 478 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/shba06.pdf, 401 Unauthorized in:
| | 2876 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/aurrecoechea98survey.pdf, 401 Unauthorized in:
| | 3173 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/pazh07.pdf, 401 Unauthorized in:
| | 3688 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/fotu05.pdf, 401 Unauthorized in:
| | 3845 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/rose05.pdf, 401 Unauthorized in:
| | 3875 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/roga05.pdf, 401 Unauthorized in:
| | 3890 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/smna05.pdf, 401 Unauthorized in:
| | 3905 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/wimo04.pdf, 401 Unauthorized in:
| | 3939 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/dahe04.pdf, 401 Unauthorized in:
| | 3959 4134 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/hupe04.pdf, 401 Unauthorized in:
| | 4000 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/chgo03.pdf, 401 Unauthorized in:
| | 4036 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/badr03.pdf, 401 Unauthorized in:
| | 4053 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/anar02.pdf, 401 Unauthorized in:
| | 4094 |
| This link requires a username and password.
Link http://db.uwaterloo.ca/~kmsalem/lib/lib/habo05.pdf, 401 Unauthorized in:
| | 4266 |
| IMG tags must have an ALT attribute.
| WCAG1 A 1.1
Section 508 1194.22 (a)
WCAG2 A F65
| 12 75 |
| Provide a way to skip repetitive navigation links.
| Section 508 1194.22 (o)
WCAG1 AAA 13.6
| 20 |
| Users should be able to quickly look at each link and tell where it goes.
Link text:
"here"
| | 141 |
| Required attribute "ALT" not specified.
| | 12 75 |
| Value of attribute "ALIGN" cannot be "ABSMIDDLE"; must be one of "TOP", "MIDDLE", "BOTTOM", "LEFT", "RIGHT".
| | 12 75 |
| No document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
| | 1 |
| Don't use generic text like "Click Here" or "Read More" in link text, because it says nothing about the link target when read out by a screen reader.
Link text:
"here"
| WCAG1 AA 13.1
WCAG2 AAA F84
| 141 |
| Use relative rather than absolute units in HTML attributes.
| WCAG1 AA 3.4
| 8 60 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 17 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 11 |
| There is no attribute "HEIGHT".
| | 8 |
| An unknown entity has been used. This often happens when ¶m=value is used instead of &param=value in URL query strings.
| HTML Validation Ampersand Problem
| 51 51 51 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 17 |
| Document type does not allow element "DIR" here.
| | 41 |
| Document type does not allow element "LI" here.
| | 67 68 69 70 71 79 80 81 82 90 91 92 93 94 102 103 104 112 113 114
...
|
| Document type does not allow element "DIR" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 40 |
| Document type does not allow element "UL" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.
| | 29 49 64 76 87 99 109 120 124 130 138 |
| End tag for "FONT" omitted, but its declaration does not permit this.
| | 10 |
| End tag for "SUP" omitted, but its declaration does not permit this.
| | 33 |
| End tag for "UL" omitted, but its declaration does not permit this.
| | 67 67 79 79 90 90 102 102 112 112 123 123 |
| End tag for "DIR" which is not finished.
| | 44 45 |
| "UL" not finished but containing element ended.
| | 67 79 90 102 112 123 |
| End tag for element "FONT" which is not open.
| | 10 |
| End tag for element "SUP" which is not open.
| | 33 |
| End tag for element "UL" which is not open.
| | 71 72 82 83 94 95 104 105 115 116 143 144 |
| Avoid underlined text - people will click on it and think it's a broken link.
| | 12 21 25 60 146 151 |
| Use a familiar font (Times, Georgia, Arial, Helvetica or Verdana) to achieve the best possible reading speed.
| | 9 10 |
| Don't use fonts only available on Macs, but not Windows, and vice versa.
| | 9 10 |
| This page has no H1 tag, which violates Bing webmaster guidelines.
| Bing
| 9 |
| Users should be able to quickly look at each link and tell where it goes.
Link text:
"here"
| | 38 |
| Document type does not allow element "A" here.
| | 49 62 |
| Document type does not allow element "TR" here.
| | 47 60 |
| End tag for "A" omitted, but its declaration does not permit this.
| | 63 63 |
| Start tag for "TR" omitted, but its declaration does not permit this.
| | 69 |
| End tag for element "P" which is not open.
| | 64 |
| Don't use generic text like "Click Here" or "Read More" in link text, because it says nothing about the link target when read out by a screen reader.
Link text:
"here"
| WCAG1 AA 13.1
WCAG2 AAA F84
| 38 |
| If several links on a page use the same link text, all those links should point to the same destination.
| WCAG1 AA 13.1
WCAG2 AAA 2.4.9
| 115 122 129 140 147 154 161 168 175 190 198 206 214 229 237 244 250 |
| Headings must be nested correctly. For example, H2 must appear after H1, H3 after H2 etc.
| WCAG1 AA 3.5
| 15 16 |
| Headings should not be empty.
| WCAG1 AA 3.5
WCAG2 AA G130
| 11 13 27 |
| The COL and COLGROUP elements are not supported by BlackBerry 5.0.
| BlackBerry
| 43 68 |
| The doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| On long pages, provide a list of contents with links that take users to the corresponding content farther down the page.
| | 1 |
| Provide SUMMARY attributes for data tables (but not for layout tables.)
| WCAG1 AAA 5.5
| 67 |
| Use headings in the appropriate HTML order (don't put H1 inside an H2, or H2 inside H3 etc.)
| | 15 16 |
| Reference not terminated by REFC delimiter.
| | 40 |
| Character "&" is the first character of a delimiter but occurred as data.
| | 112 |
| Document type does not allow element "table" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag.
| | 57 |
| End tag for "B" omitted, but OMITTAG NO was specified.
| | 50 58 |
| End tag for "BR" omitted, but OMITTAG NO was specified.
| | 189 189 189 189 189 189 189 189 189 189 189 |
| End tag for "P" omitted, but OMITTAG NO was specified.
| | 189 189 189 189 189 189 189 189 189 189 189 189 189 189 189 189 189 189 |
| End tag for "TABLE" omitted, but OMITTAG NO was specified.
| | 189 |
| End tag for "TR" omitted, but OMITTAG NO was specified.
| | 189 189 |
| End tag for "p" omitted, but OMITTAG NO was specified.
| | 189 |
| Element "A" undefined.
| | 17 20 23 26 29 148 155 161 170 172 179 |
| Element "B" undefined.
| | 7 9 11 50 58 144 151 159 174 181 |
| Element "BR" undefined.
| | 99 104 106 108 110 112 121 123 125 127 129 |
| Element "H2" undefined.
| | 99 |
| Element "P" undefined.
| | 8 10 12 47 63 66 76 98 102 115 119 135 139 143 150 158 173 180 |
| Element "TABLE" undefined.
| | 13 |
| Element "TD" undefined.
| | 32 33 34 35 36 40 42 43 44 45 |
| Element "TH" undefined.
| | 16 19 22 25 28 |
| Element "TR" undefined.
| | 15 31 39 |
| End tag for element "b" which is not open.
| | 50 53 58 |
| End tag for element "table" which is not open.
| | 47 |
| End tag for element "tr" which is not open.
| | 38 46 |
| There is no attribute "ALIGN".
| | 28 32 |
| There is no attribute "BORDER".
| | 13 |
| There is no attribute "HREF".
| | 17 |
| This page contains a link using the tel: protocol. This is not supported by desktop browsers and iPads.
| Internet Explorer
Firefox
Safari
Opera
Chrome
| 187 |
| This page contains some spelling errors.
digitisation | | 110 |
| Value of fixed attribute "version" not equal to default.
| | 1 |
| End tag for "br" omitted, but OMITTAG NO was specified.
| | 114 115 154 154 |
| End tag for "img" omitted, but OMITTAG NO was specified.
| | 61 152 |
| End tag for "input" omitted, but OMITTAG NO was specified.
| | 50 51 52 53 |
| End tag for "link" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| End tag for "meta" omitted, but OMITTAG NO was specified.
| | 1 1 1 |
| This page has markup errors, causing screen readers to miss content.
| WCAG2 A F70
| 114 50 61 1 1 |
| This page has no doctype which triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.
| Internet Explorer
Firefox
Safari
iPhone/iPad
Chrome
Opera
| 1 |
| Use text links rather than image links. In general, text links are more easily recognized as clickable.
| | 152 |
| Omitting IMG WIDTH or HEIGHT attributes means page text jumps about as images load.
| | 61 |
| There is no attribute "about".
| | 1 93 |
| There is no attribute "content".
| | 117 |
| There is no attribute "property".
| | 1 100 117 187 |
| There is no attribute "rel".
| | 169 |
| There is no attribute "typeof".
| | 93 |
| No DOCTYPE found! Checking with default HTML or XHTML document type.
| | 1 |
| Create pages that validate to W3C recommendations. This document contains markup errors.
6 markup errors found on this page.
| WCAG1 AA 3.2
| 1 |
| No meta description tag found. Use a description tag that accurately describes the contents of a web page.
| Yahoo
Google
Bing
| 1 |
| Use bold text sparingly - for one or two words or a short phrase.
| | 154 |
| Create data entry fields that are large enough to show all of the entered data without scrolling. One study has shown that search fields should be at least 35-40 characters long to accommodate 95% percent of search terms.
| | 50 |
| This page has malformed tags which IE8 and later treat differently from earlier versions of IE.
| Internet Explorer
| 114 50 61 1 1 |
| Google recommends using well-formed HTML code in your webpages. This page has mismatched tags.
| Google
| 114 50 61 1 1 |
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