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WCAG 2.0 Quick Reference Checklist
For How to Meet Web Content Accessibility Guidelines 2.0

collapsed Introduction

collapsed Customize Options

expanded Perceivable

collapsed Text Alternatives: Guideline 1.1 Provide text alternatives for any non-text content so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language.

expanded Time-based Media: Guideline 1.2 Provide alternatives for time-based media. live link

expanded Intent of Guideline 1.2 Time-based Media live link

The purpose of this guideline is to provide access to time-based and synchronized media.This includes media that is:

To make it easy for authors to quickly determine which success criteria apply to their content, the type of media each success criterion applies to is included in its short name.

For audio-only or video-only media, you only need to apply the success criteria that say "audio-only" or "video-only" in their short name. If your media is not audio-only or video-only, then all the rest of the success criteria apply.

Media can also be live or prerecorded. Each of the success criterion short names clearly tells you if the success criterion applies to live or prerecorded media.

Synchronized media is defined in the glossary as:

synchronized media

audio or video synchronized with another format for presenting information and/or with time-based interactive components, unless the media is a media alternative for text that is clearly labeled as such

Note that an audio file accompanied by interaction is covered here, as is a video-only file that involves interaction. These are covered because interaction must take place at a particular time. Having a text transcript that said, "for more information, click now," would not be very helpful since the reader would have no idea when the audio said, "now." As a result, synchronized captions would be needed.

Sometimes, there is so much dialogue that audio description cannot fit into existing pauses in the dialogue. The option at Level A to provide an alternative for time-based media instead of audio description for synchronized media would allow access to all of the information in the synchronized media. This option also allows access to the visual information in non-visual form when audio description is not provided for some other reason.

For synchronized media that includes interaction, interactive elements (for example links) could be embedded in the alternative for time-based media.

This guideline also includes (at Level AAA) sign language interpretation for synchronized media as well as an approach called extended audio description. In extended audio description, the video is frozen periodically to allow more audio description to take place than is possible in the existing pauses in the dialogue. This is a case where higher-level Success Criteria build upon the requirements of lower-level Success Criterion with the intention of having cumulative, progressively stronger, requirements.

collapsed Advisory Techniques for Guideline 1.2 Time-based Media

collapsed Success Criteria for Guideline 1.2 Time-based Media live link

collapsed Adaptable: Guideline 1.3 Create content that can be presented in different ways (for example simpler layout ) without losing information or structure.

collapsed Distinguishable: Guideline 1.4 Make it easier for users to see and hear content including separating foreground from background.

expanded Operable

collapsed Keyboard Accessible: Guideline 2.1 Make all functionality available from a keyboard.

collapsed Enough Time: Guideline 2.2 Provide users enough time to read and use content.

collapsed Seizures: Guideline 2.3 Do not design content in a way that is known to cause seizures.

expanded Understandable

collapsed Readable: Guideline 3.1 Make text content readable and understandable.

collapsed Predictable: Guideline 3.2 Make Web pages appear and operate in predictable ways.

collapsed Input Assistance: Guideline 3.3 Help users avoid and correct mistakes.

expanded Robust

collapsed Compatible: Guideline 4.1 Maximize compatibility with current and future user agents, including assistive technologies.

collapsed Conformance requirements