Introduction Customize Options
Perceivable 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. Time-based Media: Guideline 1.2 Provide alternatives for time-based media. 
Intent of Guideline 1.2 Time-based Media Advisory Techniques for Guideline 1.2 Time-based Media Success Criteria for Guideline 1.2 Time-based Media Audio-only and Video-only (Prerecorded): 1.2.1 For prerecorded audio-only and prerecorded video-only media, the following are true, except when the audio or video is a media alternative for text and is clearly labeled as such: (Level A)Prerecorded Audio-only: An alternative for time-based media is provided that presents equivalent information for prerecorded audio-only content.
Prerecorded Video-only: Either an alternative for time-based media or an audio track is provided that presents equivalent information for prerecorded video-only content.
Captions (Prerecorded): 1.2.2
Captions are provided for all prerecorded audio content in synchronized media, except when the media is a media alternative for text and is clearly labeled as such. (Level A) Intent for Captions (Prerecorded) 1.2.2 Sufficient Techniques for Captions (Prerecorded) 1.2.2 Advisory Techniques for Captions (Prerecorded) 1.2.2 Failures for Examples for Captions (Prerecorded) 1.2.2 Related Resources for Captions (Prerecorded) 1.2.2 Key terms for Captions (Prerecorded) 1.2.2 Audio Description or Media Alternative (Prerecorded): 1.2.3 An alternative for time-based media or audio description of the prerecorded video content is provided for synchronized media, except when the media is a media alternative for text and is clearly labeled as such.
(Level A) Captions (Live): 1.2.4
Captions are provided for all live audio content in synchronized media. (Level AA) Audio Description (Prerecorded): 1.2.5
Audio description is provided for all prerecorded video content in synchronized media.
(Level AA) Sign Language (Prerecorded): 1.2.6
Sign language interpretation is provided for all prerecorded audio content in synchronized media.
(Level AAA) Extended Audio Description (Prerecorded): 1.2.7 Where pauses in foreground audio are insufficient to allow audio descriptions to convey the sense of the video, extended audio description is provided for all prerecorded video content in synchronized media. (Level AAA) Media Alternative (Prerecorded): 1.2.8 An alternative for time-based media is provided for all prerecorded synchronized media and for all prerecorded video-only media. (Level AAA) Audio-only (Live): 1.2.9 An alternative for time-based media that presents equivalent information for live audio-only content is provided.
(Level AAA) Adaptable: Guideline 1.3 Create content that can be presented in different ways (for example simpler layout
) without losing information or structure. Distinguishable: Guideline 1.4 Make it easier for users to see and hear content including separating foreground from background. Operable Keyboard Accessible: Guideline 2.1 Make all functionality available from a keyboard. Enough Time: Guideline 2.2 Provide users enough time to read and use content. Seizures: Guideline 2.3 Do not design content in a way that is known to cause seizures. Navigable: Guideline 2.4 Provide ways to help users navigate, find content and determine where they are. Understandable Readable: Guideline 3.1 Make text content readable and understandable. Predictable: Guideline 3.2 Make Web pages appear and operate in predictable ways. Input Assistance: Guideline 3.3 Help users avoid and correct mistakes. Robust Compatible: Guideline 4.1 Maximize compatibility with current and future user agents, including assistive technologies. Conformance requirements