Table View of WCAG 2.0 Success Criteria and Related Documents [DRAFT]

This is a table view generated from the 09 August 2005 Working Draft. It represents a condensed view of the normative sections of the guidelines at various conformance levels as well as links into the techniques documents.

There are a total of 13 guidelines and 67 success criteria in the 09 August 2005 Working Draft.

Guideline 1.1 (text-equiv)

Provide text alternatives for all non-text content.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
1.1 L1 SC1

For all non-text content that is used to convey information, text alternatives identify the non-text content and convey the same information. For multimedia, provide a text-alternative that identifies the multimedia.
1.1 L1 SC2

For functional non-text content, text alternatives serve the same purpose as the non-text content. If text alternatives can not serve the same purpose as the functional non-text content, text alternatives identify the purpose of the functional non-text content
1.1 L1 SC3

For non-text content that is intended to create a specific sensory experience, text alternatives at least identify the non-text content with a descriptive label.
1.1 L1 SC4

Non-text content that is not functional, is not used to convey information, and does not create a specific sensory experience is implemented such that it can be ignored by assistive technology.
1.1 L1 SC5

For live audio-only or live video-only content, text alternatives at least identify the purpose of the content with a descriptive label.
1.1 L3 SC1

For prerecorded multimedia content, a combined transcript of captions and audio descriptions of video is available.

Guideline 1.2 (media-equiv)

Provide synchronized alternatives for multimedia.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
1.2 L1 SC1

Captions are provided for prerecorded multimedia.
1.2 L1 SC2

Audio descriptions of video are provided for prerecorded multimedia
1.2 L2 SC1

Real-time captions are provided for live multimedia.
1.2 L3 SC1

Sign language interpretation is provided for multimedia
1.2 L3 SC2

Extended audio descriptions of video are provided for prerecorded multimedia.
1.2 L3 SC3

Audio descriptions of video are provided for live multimedia.

Guideline 1.3 (content-structure-separation)

Ensure that information, functionality, and structure can be separated from presentation.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
1.3 L1 SC1

Structures within the content can be programmatically determined.
1.3 L1 SC2

When information is conveyed by color, the color can be programmatically determined or the information is also conveyed through another means that does not depend on the user's ability to differentiate colors.
1.3 L2 SC1

Information that is conveyed by variations in presentation of text is also conveyed in text or the variations in presentation of text can be programmatically determined.
1.3 L2 SC2

Any information that is conveyed by color is visually evident when color is not available.
1.3 L3 SC1

When content is arranged in a sequence that affects its meaning, that sequence can be determined programmatically.

Guideline 1.4 (visual-audio-contrast)

Make it easy to distinguish foreground information from background images or sounds.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
1.4 L1 SC1

Any text that is presented over a background image, color, or text can be programmatically determined.
1.4 L2 SC1

Text and diagrams that are presented over a background image, color, or text have a contrast greater than X1 where the whiter element is at least Y1 as measured by _____.
1.4 L2 SC2

Text that is presented over a background pattern of lines which are within 500% +/- of the stem width of the characters or their serifs must have a contrast between the characters and the lines that is greater than X2, where the whiter element is at least Y2.
1.4 L2 SC3

A mechanism is available to turn off background audio that plays automatically.
1.4 L3 SC1

Text is not presented over any background (image, text, color or pattern), or if any background is present, the contrast between the text and the background is greater than X2.
1.4 L3 SC2

Audio content does not contain background sounds or the background sounds are at least 20 decibels lower than the foreground audio content, with the exception of occasional sound effects.

Guideline 2.1 (keyboard-operation)

Make all functionality operable via a keyboard interface.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
2.1 L1 SC1

All of the functionality of the content, where the functionality or its outcome can be described in a sentence, is operable through a keyboard interface.
2.1 L3 SC1

All functionality of the content is designed to be operated through a keyboard interface.

Guideline 2.2 (time-limits)

Allow users to control time limits on their reading or interaction.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
2.2 L1 SC1

Content is designed so that time-outs are not an essential part of interaction, or at least one of the following is true for each time-out that is a function of the content:
  • the user is allowed to deactivate the time-out or;
  • the user is allowed to adjust the time-out over a wide range which is at least ten times the length of the default setting or;
  • the user is warned before time expires, allowed to extend the time-out with a simple action (for example, "hit any key") and given at least 20 seconds to respond or;
  • the time-out is an important part of a real-time event (for example, an auction), and no alternative to the time-out is possible or;
  • the time-out is part of an activity where timing is essential (for example, competitive gaming or time-based testing) and time limits can not be extended further without invalidating the activity.
2.2 L2 SC1

Content does not blink for more than 3 seconds, or a method is available to stop any blinking content in the delivery unit.
2.2 L2 SC2

Moving or time-based content can be paused by the user.
2.2 L3 SC1

Except for real-time events, timing is not an essential part of the event or activity presented by the content.
2.2 L3 SC2

Non-emergency interruptions, such as the availability of updated content, can be postponed or suppressed by the user.
2.2 L3 SC3

When an authenticated session has an inactivity timeout, the user can continue the activity without loss of data after re-authenticating.

Guideline 2.3 (flicker)

Allow users to avoid content that could cause seizures due to photosensitivity.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
2.3 L1 SC1

Content that violates Computer adapted ITC Guidance for general flash or Computer adapted ITC Guidance for red flash is marked in a way that the user can avoid its appearance.
2.3 L2 SC1

Content does not violate Computer adapted ITC Guidance for general flash or Computer adapted ITC Guidance for red flash.
2.3 L3 SC1

Content does not violate Computer adapted spatial pattern thresholds or red flash.

Provide mechanisms to help users find content, orient themselves within it, and navigate through it.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
2.4 L1 SC1

Navigational features can be programmatically identified.
2.4 L2 SC1

More than one way is available to locate content within a set of delivery units.
2.4 L2 SC2

Blocks of content that are repeated on multiple perceivable units are implemented so that they can be bypassed.
2.4 L2 SC3

Delivery units have descriptive titles
2.4 L2 SC4

The destination of each programmatic reference to another delivery unit is identified through words or phrases that either occur in text or can be programmatically determined.
2.4 L3 SC1

When a page or other delivery unit is navigated sequentially, elements receive focus in an order that follows relationships and sequences in the content.
2.4 L3 SC2

Information about the user's location within a set of delivery units is available.

Guideline 2.5 (minimize-error)

Help users avoid mistakes and make it easy to correct them.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
2.5 L2 SC1

If an input error is detected, the error is identified and provided to the user in text.
2.5 L2 SC2

If an input error is detected and suggestions for correction are known and can be provided without jeopardizing the security or purpose of the content, the error is identified and the suggestions are provided to the user.
2.5 L2 SC3

For forms that cause legal or financial transactions to occur, that modify or delete data in remote data storage systems, or that submit test responses, at least one of the following is true:
  1. Actions are reversible.
  2. Actions are checked for errors before going on to the next step in the process.
  3. The user is able to review and confirm or correct information before submitting it.
2.5 L3 SC1

Additional context-relevant assistance is available for text input.

Guideline 3.1 (meaning)

Make text content readable and understandable.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
3.1 L1 SC1

The primary natural language or languages of the delivery unit can be programmatically determined.
3.1 L2 SC1

The natural language of each foreign passage or phrase in the content can be programmatically determined.
3.1 L3 SC1

A mechanism is available for finding definitions for all words in text content.
3.1 L3 SC2

A mechanism is available for identifying specific definitions of words used in an unusual or restricted way, including idioms and jargon.
3.1 L3 SC3

A mechanism for finding the expanded form of acronyms and abbreviations is available.
3.1 L3 SC4

Section titles are descriptive.
3.1 L3 SC5

When text requires reading ability at or above the upper secondary education level, one or more of the following supplements is available:
  1. A text summary that requires reading ability no higher than primary education level.
  2. Graphical illustrations of concepts or processes that must be understood in order to use the content.
  3. A spoken version of the text content.

Guideline 3.2 (consistent-behavior)

Make the placement and functionality of content predictable.

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
3.2 L1 SC1

Any change of context is implemented in a manner that can be programmatically determined.
3.2 L2 SC1

Components that are repeated on multiple delivery units within a set of delivery units occur in the same order each time they are repeated.
3.2 L2 SC2

When any component receives focus, it does not cause a change of context.
3.2 L2 SC3

Changing the setting of any input field does not automatically cause a change of context .
3.2 L2 SC4

Components that have the same functionality in multiple delivery units within a set of delivery units are labeled consistently.
3.2 L3 SC1

Graphical components that appear on multiple pages, including graphical links, are associated with the same text equivalents wherever they appear.
3.2 L3 SC2

Changes of context are initiated only by user request.

Guideline 4.1 (use-spec)

Use technologies according to specification.

Guideline 4.2 (technology-supports-access)

Ensure that user interfaces are accessible or provide an accessible alternative(s)

ID Success Criteria General Techniques HTML Techniques CSS Techniques Scripting Techniques
4.2 L1 SC1

If content does not meet all level 1 success criteria, then an alternate form is provided that does meet all level 1 success criteria.
4.2 L1 SC2

Content using baseline technologies or non-baseline technologies, must meet the following criteria:
  1. Content that violates Computer adapted ITC Guidance for general flash or Computer adapted ITC Guidance for red flash is marked in a way that the user can avoid its appearance.
  2. If the user can enter the content using the keyboard, then the user can exit the content using the keyboard.
4.2 L1 SC3

The role, state, and value can be programmatically determined for every user interface component of the web content that accepts input from the user or changes dynamically in response to user input or external events.
4.2 L1 SC4

The label of each user interface control that accepts input from the user can be programmatically determined and is explicitly associated with the control.
4.2 L1 SC5

The states and values of content that can be changed via the user interface can also be changed programmatically.
4.2 L1 SC6

Changes to content, structure, selection, focus, attributes, values, state, and relationships within the content can be programmatically determined.
4.2 L2 SC1

Accessibility conventions of the markup or programming language (API's or specific markup) are used.
4.2 L3 SC1

Content implemented using technologies outside of baseline follows all WCAG requirements supported by the technology.

Techniques not mapped to success criterion

HTML Techniques

CSS Techniques

Scripting Techniques