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Use when reviewing rendered HTML, interactive components, or design-system patterns related to Avoid autoplaying media. Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output where relevant.
Passed 21 of 22 test cases with the skill, and 18 of 22 without it.
3 fixed18 passed either way1 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
A promotional banner video automatically plays with sound turned off upon entering a landing page. Is there a maximum duration standard before an explicit stop control becomes strictly mandatory or expected?
| Checked | Without skill | With skill |
|---|---|---|
| The response mentions that unstopped media should automatically stop after 5 seconds unless explicit user controls are available. | Missed | Passed |
The instructions your model reads when the skill loads.
Autoplaying audio drowns out screen reader speech, startles users, and wastes bandwidth—providing user control is essential for accessibility and good UX.
Verify no audio or video autoplays on page load. If autoplay is essential, confirm media is muted by default and pause controls are immediately accessible via keyboard within the first few tab stops.
Remove autoplay attributes from media elements. If autoplay is required, add muted attribute and provide prominent, keyboard-accessible pause controls. Consider adding a global pause button for pages with multiple media elements.
Explain how autoplaying media interferes with screen readers, startles users with cognitive disabilities, and creates barriers for users in quiet environments or with limited bandwidth.
Review the rendered markup and interactive states that affect Avoid autoplaying media. Flag exact elements, roles, labels, focus behavior, or keyboard interactions that violate the rule, and note how to verify the fix with browser accessibility tooling or assistive tech.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/accessibility/autoplay-media
test cases passed, vs 18 / 22 without
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