a11y teacher edition W3C WCAG 2.2 & WCAG 3.0 draft reference
Plain English Accessibility Hub

Translating W3C Standards for Designers, Developers, QA & Product teams

โš ๏ธ W3C Working Draft Notice

WCAG 3.0 is an active W3C Working Draft in development by the AGWG. Requirements, assertions, the conformance model and reporting tiers are still being developed and may change. The latest published draft is the 10 September 2026 Working Draft; this site follows the editorsโ€™ draft, which also includes exploratory provisions.

developing Supplemental requirement

Media Alternatives Controllable

Group: user-control • Guideline: media-control

Summary in Plain English

The viewer, not the page, decides whether closed captions and audio descriptions are playing, and can change that at any point.

Why It Matters

Which alternative helps depends on the viewer. Control is what lets people sharing a screen, or with different needs, use the same media.

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