WCAG 1.3.1 Info and Relationships states that information, structure, and relationships conveyed by the presentation must be discernible through text or programmatically.
Testing Methods: Info and Relationships
Testing Methods: Live Audio-only
WCAG 1.2.9 Audio-only (Live) is a Level AAA conformance level Success Criterion. It states that an alternative for time-based media that presents equivalent information for live audio-only content is provided.
Testing Methods: Prerecorded Media Alternative
WCAG 1.2.8 Media Alternative (Prerecorded) is a Level AAA conformance level Success Criterion. It states that an alternative for time-based media is provided for all prerecorded synchronized media and for all prerecorded video-only media.
Testing Methods: Prerecorded Extended Audio Description
WCAG 1.2.7 Extended Audio Description (Prerecorded) is a Level AAA success criterion, requiring videos to include extended spoken descriptions of visual content. When pauses in the main audio don’t fully convey the video’s meaning, extended audio descriptions are provided for all prerecorded, synchronized video content.
Testing Methods: Prerecorded Sign Language
WCAG 1.2.6 Sign Language (Prerecorded) is a Level AAA conformance level Success Criterion. It states that Sign language interpretation is provided for all prerecorded audio content in synchronized media.
Testing Methods: Prerecorded Audio Description
WCAG 1.2.5 (Level AA) requires audio description for all prerecorded video content in synchronized media.
Testing Methods: Live Captions
1.2.4 Captions (Live) is a Level AA criterion that requires captions for all live audio content in synchronized media.
Testing Methods: Prerecorded Audio Description or Media Alternative
1.2.3 Audio Description or Media Alternative (Prerecorded) requires an audio description or alternative for synchronized media—unless the media is clearly labeled as a text alternative.
Testing Methods – Pre-recorded Captions
WCAG 1.2.2 Captions (Prerecorded) is a Level A Success Criterion requiring captions for prerecorded synchronized media, unless it’s clearly labeled as a text alternative.
Testing Methods: Prerecorded Audio-only and Video-only
WCAG 1.2.1 (Audio-only and Video-only – Prerecorded) is a Level A requirement. It mandates alternatives for prerecorded audio-only (e.g., transcripts) and video-only content (e.g., audio descriptions or text alternatives).
Automated vs. AI vs. Manual Testing – Text Alternatives
There’s a lot of chatter on the intertubes of late around the thoroughness and accuracy of various accessibility testing approaches; Manual, Automated and AI-based testing. I thought it might be good to take a look at these comparisons, to have a better sense when different approaches can be effective.