Abbreviation | WCAG2-AA |
---|---|
Long Name | Web Content Accessibility Guidelines (WCAG), Version 2.0, Level AA |
Published Date | 2008-12-11 |
URL | http://www.w3.org/TR/WCAG20/#a |
Status | Enabled |
Open To Public | Yes |
Element | Error Type | Description | Check ID |
---|---|---|---|
a | Potential | Sound file must have a text transcript. | 17 |
a | Likely | Links to multimedia require a text transcript. | 20 |
a | Likely | Links to multimedia have a link to text alternative. | 145 |
None Found.
Element | Error Type | Description | Check ID |
---|---|---|---|
object | Potential | <code>object</code> link to multimedia file require equivalent alternatives (e.g., captions or auditory descriptions of the visual track). | 146 |
object | Potential | <code>object</code> may require a long description. | 160 |
None Found.
None Found.
None Found.
Element | Error Type | Description | Check ID |
---|---|---|---|
body | Potential | All text references do not use shape, size, or relative position alone. | 250 |
table | Potential | All layout <code>tables</code> make sense when linearized. | 133 |
Element | Error Type | Description | Check ID |
---|---|---|---|
applet | Potential | <code>applet</code> should not use color alone. | 21 |
body | Known | All text colors or no text colors are set. | 252 |
img | Potential | For all <code>img</code> elements, text does not refer to the image by color alone. | 14 |
img | Potential | The luminosity contrast ratio between text and background color in all images is at least 5:1. | 251 |
input | Potential | <code>input</code> should not use color alone. | 55 |
object | Potential | <code>object</code> must not use color alone. | 73 |
script | Potential | Color alone should not be used in the <code>script</code>. | 86 |
None Found.
Element | Error Type | Description | Check ID |
---|---|---|---|
a | Known | Visited link text colour must contrast sufficiently with its background colour. | 302 |
a | Known | Active link text colour must contrast sufficiently with its background colour. | 303 |
a | Known | Selected link text colour must contrast sufficiently with its background colour. | 304 |
a | Known | Link text colour must contrast sufficiently with its background colour. | 305 |
all elements | Known | Provide sufficient contrast between text and background colours. | 301 |
Element | Error Type | Description | Check ID |
---|---|---|---|
b | Known | <code>b</code> (bold) element is not used. | 116 |
basefont | Known | <code>basefont</code> must not be used. | 176 |
font | Known | <code>font</code> must not be used. | 177 |
i | Known | <code>i</code> (italic) element is not used. | 117 |
Element | Error Type | Description | Check ID |
---|---|---|---|
img | Potential | Alt text for all <code>img</code> elements contains all text in the image unless the image text is decorative or appears elsewhere in the document. | 11 |
Element | Error Type | Description | Check ID |
---|---|---|---|
applet | Potential | <code>applet</code> provides a keyboard mechanism to return focus to the parent window. | 258 |
embed | Potential | <code>embed</code> provides a keyboard mechanism to return focus to the parent window. | 260 |
object | Potential | <code>object</code> provides a keyboard mechanism to return focus to the parent window. | 259 |
Element | Error Type | Description | Check ID |
---|---|---|---|
meta | Known | Meta refresh is not used with a time-out. | 72 |
Element | Error Type | Description | Check ID |
---|---|---|---|
blink | Known | <code>blink</code> element is not used. | 27 |
marquee | Known | <code>marquee</code> element is not used. | 69 |
meta | Known | Auto-redirect must not be used. | 71 |
Element | Error Type | Description | Check ID |
---|---|---|---|
applet | Potential | <code>applets</code> cause screen flicker. | 22 |
img | Potential | All <code>img</code> elements have associated images that do not flicker. | 10 |
object | Potential | All <code>objects</code> do not flicker. | 30 |
script | Potential | <code>script</code> should not cause screen flicker. | 87 |
Element | Error Type | Description | Check ID |
---|---|---|---|
body | Potential | A "skip to content" link appears on all pages with blocks of material prior to the main document. | 28 |
body | Potential | All groups of links with a related purpose are marked. | 262 |
frame | Known | All <code>frames</code> have a <code>title</code> attribute. | 31 |
frame | Potential | All <code>frame</code> <code>titles</code> identify the purpose or function of the <code>frame</code>. | 32 |
pre | Likely | ASCII art should have a skipover link. | 84 |
Element | Error Type | Description | Check ID |
---|---|---|---|
head | Known | Document contains a <code>title</code> element. | 50 |
title | Known | <code>title</code> contains text. | 51 |
title | Likely | <code>title</code> is short. | 52 |
title | Likely | <code>title</code> is not placeholder text. | 53 |
title | Potential | <code>title</code> describes the document. | 54 |
None Found.
Element | Error Type | Description | Check ID |
---|---|---|---|
a | Potential | Link text is meaningful when read out of context. | 19 |
a | Likely | Suspicious link text. | 173 |
a | Known | Each source anchor contains text. | 174 |
Element | Error Type | Description | Check ID |
---|---|---|---|
body | Potential | Sites must have a site map. | 184 |
None Found.
Element | Error Type | Description | Check ID |
---|---|---|---|
html | Known | Document has required <code>lang</code> attribute(s). | 48 |
html | Known | Document has valid language code. | 49 |
html | Known | Reading order direction is marked using the html element's <code>dir</code> attribute if the document's primary language is read right to left. | 273 |
Element | Error Type | Description | Check ID |
---|---|---|---|
body | Potential | Words and phrases not in the document's primary language are marked. | 110 |
Element | Error Type | Description | Check ID |
---|---|---|---|
body | Potential | Loading the web page does not cause a new window to open. | 275 |
Element | Error Type | Description | Check ID |
---|---|---|---|
all elements | Potential | Change of context occurs only by user activation unless a warning is provided. | 274 |
area | Likely | <code>area</code> should not open new window without warning. | 68 |
select | Likely | All <code>select</code> elements do not cause an extreme change in context. | 92 |
Element | Error Type | Description | Check ID |
---|---|---|---|
body | Potential | Repeated components appear in the same relative order each time they appear. | 276 |
form | Potential | The tab order specified by <code>tabindex</code> attributes follows a logical order. | 265 |
frameset | Potential | Repeated blocks of content appear in the same <code>frame</code> within the <code>frameset</code>. | 263 |
Element | Error Type | Description | Check ID |
---|---|---|---|
blockquote | Potential | <code>blockquote</code> must not be used for indentation. | 100 |
body | Potential | Use the <code>blockquote</code> element to mark up block quotations. | 131 |
ol | Likely | List items must not be used to format text. | 81 |
Element | Error Type | Description | Check ID |
---|---|---|---|
form | Potential | All form submission error messages identify any empty required fields. | 267 |
Element | Error Type | Description | Check ID |
---|---|---|---|
form | Potential | All form submission error messages provide assistance in correcting the error. | 268 |
Element | Error Type | Description | Check ID |
---|---|---|---|
form | Potential | Form submission data is presented to the user before final acceptance for all irreversable transactions. | 269 |
form | Potential | Information deleted using a web page can be recovered. | 272 |
Element | Error Type | Description | Check ID |
---|---|---|---|
body | Known | <code>id</code> attributes must be unique. | 185 |
None Found.