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A11ySignal
Level AAWCAG 2.0WCAG 2.1WCAG 2.2EN 301 549 § 9.1.2.4

1.2.4
Captions (Live)

Live audio content needs live captions.

What the standard says

Captions are provided for all live audio content in synchronized media.

Why it matters

An uncaptioned live event excludes Deaf attendees from something they cannot catch up on later.

What a failure looks like

  • failsA live webinar with captions promised "in the recording".

How to fix it

  • doUse a live captioning service, or a human stenographer for anything high-stakes.

How A11ySignal checks it

manual

No automated rule can judge this criterion, and we will not pretend otherwise. A clean scan does not mean 1.2.4 passes — it means nothing we can measure fails. This one needs a person.

Also under 1.2 Time-based Media