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🔊 Accessibility Live Region Tester
Experiment with aria-live regions, politeness levels, and atomic updates. Preview how screen readers announce live changes before shipping UI updates.
Accessibility Live Region Tester
Preview how assistive technologies respond to live region updates. Configure politeness, atomic behavior, and relevant changes, then fire announcements to replicate real UI updates.
Announcement controls
Tip: move focus away from this page (e.g. onto browser chrome) to hear how screen readers announce the live updates.
Live region preview
The region below mirrors how your configuration will behave when the announcement fires. Use it to check timing differences between polite and assertive updates.
Waiting for updates…
<div role="status" aria-live="polite" aria-relevant="additions">
Waiting for updates…
</div>Announcement history
Fire an announcement to capture the exact text delivered to assistive technologies.
How to use this tool
- Type or paste announcement text that your interface would output.
- Choose the live region politeness level, role, and atomic behavior.
- Trigger announcements to hear how screen readers present the update.
When to use assertive
- Critical system alerts that demand immediate attention.
- Form validation errors that prevent progression.
- Connectivity or session timeouts that block interaction.
Keep updates concise
- Avoid repeating surrounding context that a user already heard.
- Use punctuation to insert natural pauses in the announcement.
- Update only the changed portion when possible to reduce noise.
FAQ
- Why does the announcement sometimes repeat?
- If aria-atomic is enabled the entire region is read aloud after each change. Disable it to announce only the updated text.
- Can I simulate delayed updates?
- Yes. Toggle auto announce off and trigger the announcement manually to mimic asynchronous status updates.
Resources
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