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.

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. This success criterion ensures that people who are deaf or hard of hearing and fluent in sign language can fully understand the audio content in synchronized media. Sign language conveys nuances like intonation and emotion that captions cannot, providing richer and more effective access. Additionally, sign language users can process it more quickly, making it better suited for time-based presentations.

I’m a big fan of using automation in WCAG testing. I use bookmarklets, dev tools, browser features & reporting, and a pile of third-party products from assorted vendors. These save me time and…

WCAG 1.2.1 Audio-only and Video-only (Prerecorded) is a Level A conformance level Success Criterion. For prerecorded audio-only or video-only content, providing an alternative (e.g., a transcript for audio-only, or an audio description/text alternative for video-only content) is required.

WCAG Success Criterion 1.1.1 (Non-text Content) under "Text Alternatives" ensures non-text elements are accessible to all users, including those using screen readers or braille displays.

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