WCAG 1.0 (Level A)

Abbreviation WCAG1-A
Long Name Web Content Accessibility Guidelines (WCAG), Version 1.0, Level A
Published Date 2004-03-17
URL http://www.w3.org/TR/WCAG10/#a
Status Enabled
Open To Public Yes


Checks


Priority 1


1.1 Provide a text equivalent for every non-text element.


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
applet Potential <code>applet</code> contains a text equivalent in the <code>alt</code> attribute of the <code>applet</code>. 23
area Known All <code>area</code> elements have an <code>alt</code> attribute. 64
area Potential Alt text for all <code>area</code> elements identifies the link destination. 65
area Likely <code>area</code> link to sound file must have text transcript. 66
frameset Likely Relationship between <code>frames</code> must be described. 34
img Known All <code>img</code> elements have an <code>alt</code> attribute. 1
img Likely Non-Decorative images must have Alt text. 4
img Likely Important images should not have spacer Alt text. 5
img Potential A long description is used for each <code>img</code> element that does not have Alt text conveying the same information as the image. 8
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
input Known All <code>input</code> elements with a <code>type</code> attribute value of "image" have an <code>alt</code> attribute. 58
input Potential Alt text for all <code>input</code> elements with a <code>type</code> attribute value of "image" identifies the purpose or function of the image. 59
object Potential <code>object</code> link to multimedia file must have text transcript. 77
object Known <code>object</code> must have a <code>title</code>. 78
object Known <code>object</code> must have a valid <code>title</code>. 79
object Potential All <code>objects</code> contain a text equivalent of the <code>object</code>. 80
script Known <code>script</code> must have a <code>noscript</code> section. 90

1.2 Provide redundant text links for each active region of a server-side image map.


Element Error Type Description Check ID
img Potential All active areas in all server-side image maps have duplicate text links in the document. 132

1.3 Until user agents can automatically read aloud the text equivalent of a visual track, provide an auditory description of the important information of the visual track of a multimedia presentation.


None Found.

1.4 For any time-based multimedia presentation (e.g., a movie or animation), synchronize equivalent alternatives (e.g., captions or auditory descriptions of the visual track) with the presentation.


None Found.

2.1 Ensure that all information conveyed with color is also available without color, for example from context or markup.


Element Error Type Description Check ID
applet Potential <code>applet</code> should not use color alone. 21
img Potential For all <code>img</code> elements, text does not refer to the image by color alone. 14
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

4.1 Clearly identify changes in the natural language of a document's text and any text equivalents (e.g., captions).


Element Error Type Description Check ID
body Potential Words and phrases not in the document's primary language are marked. 110

5.1 For data tables, identify row and column headers.


Element Error Type Description Check ID
table Potential All data tables contain <code>th</code> elements. 136

6.1 Organize documents so they may be read without style sheets.


Element Error Type Description Check ID
all elements Likely Content must be readable when stylesheets are not applied. 109
link Potential Document must be readable when stylesheets are not applied. 97
script Likely Content must be readable when stylesheets are not applied (SCRIPT). 94

6.2 Ensure that equivalents for dynamic content are updated when the dynamic content changes.


Element Error Type Description Check ID
applet Potential Text equivalents for <code>applet</code> must be updated if <code>applet</code> changes. 24
object Potential Text equivalents for <code>object</code> should be updated if <code>object</code> changes - (codebase). 74
object Potential Text equivalents for <code>object</code> should be updated if <code>object</code> changes - (classid). 127

6.3 Ensure that pages are usable when scripts, applets, or other programmatic objects are turned off or not supported.


Element Error Type Description Check ID
applet Potential <code>applet</code> contains a text equivalent in the body of the <code>applet</code>. 25
object Potential Content must be usable when <code>object</code> are disabled. 75
object Potential Content must be usable when <code>object</code>s are disabled. 128

7.1 Until user agents allow users to control flickering, avoid causing the screen to flicker.


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

8.1 Make programmatic elements such as scripts and applets directly accessible or compatible with assistive technologies.


Element Error Type Description Check ID
applet Potential <code>applet</code> user interface must be accessible. 26
object Potential <code>object</code> user interface must be accessible - (codebase). 76
object Potential <code>object</code> user interface must be accessible - (classid). 129
script Potential User interface for <code>script</code> must be accessible. 89

9.1 Provide client-side image maps instead of server-side image maps except where the regions cannot be defined with an available geometric shape.


Element Error Type Description Check ID
img Known All <code>img</code> elements with an <code>ismap</code> attribute have a valid <code>usemap</code> attribute. 12

11.4 If, after best efforts, you cannot create an accessible page, provide a link to an alternative page that uses W3C technologies, is accessible, has equivalent information (or functionality), and is updated as often as the inaccessible (original) page.


None Found.

12.1 Title each frame to facilitate frame identification and navigation.


Element Error Type Description Check ID
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

14.1 Use the clearest and simplest language appropriate for a site's content.


None Found.


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