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 editors’ draft, which also includes exploratory provisions.
developingAssertion
Captions Usability Testing
Group: images-and-media • Guideline: captions
Summary in Plain English
An organisational assertion: the organisation states that it tested with people who rely on captions and fixed or mitigated what the testing found.
Why It Matters
Caption quality problems - timing, reading speed, speaker attribution - show up in use rather than in a checklist.
0
Examples from the Draft
Worked examples the W3C editors wrote into the provision itself, not
examples invented here.
Upstream has a test heading for this provision but has not written
the procedure yet, and no test steps have been written here.
Generic advice would apply to almost any provision, so none is shown.
W3C Working Group Status
W3C Maturity Status:developing
Track / Group:images-and-media
The draft records no open editors' notes on this provision.
W3C Threads on This Provision
1 GitHub thread carrying 0 comments,
fetched from w3c/wcag3 by the
tracker. Titles, numbers and states are the threads' own.
Nobody has read these threads and written up the positions yet, so
only the threads themselves are listed.
[Title, role, or organization] asserts that:
* We have conducted usability testing with users who need captions, and changes were made to fix or mitigate the issues found.
::assertion-required
* title, role, or organization making the assertion (if different from the conformance claim)
* date of when the usability testing was conducted
* date of assertion (if different from the date of the conformance claim)
::assertion-recommended
* scope
* types of disabilities each user had
* number of users (for each type of disability)
* date of testing
* identified issues and details of solutions applied
:::example
* **Scope:** videos on the following URLs:
* "What is accessibility?" https://xxx.xxx/yyyy1
* "About assistive technologies" https://xxx.xxx/yyyy2
* "How to use WCAG" https://xxx.xxx/yyyy3
* **Type and number:** 8 users in total
* 5 users who are deaf
* 3 users who are hard of hearing
* **Dates:** 10-11 October 2024
* **Examples of fixed issues:**
* Identified where the speaker changed.
* Described background music.
* Indicated that a dog was barking.
:::