What this criterion requires
Nothing flashes more than three times per second, period - no threshold exception.
Who it helps
People with photosensitive epilepsy.
Example: fails vs passes
Relying on the "small safe area" exception while claiming AAA.
No content flashes more than 3 times per second, anywhere, at any size.
AAA removes the threshold exceptions entirely.
How to meet and fix it
- Zero tolerance for flashing at AAA
Common failures auditors find
- Relying on the small-area exception from Level A
Automated scanning catches a share of these instantly - run a free check - and a manual audit covers the judgement calls a tool cannot make.
Sources
- W3C, Understanding 2.3.2: Three Flashes - w3.org/WAI
- W3C, How to Meet 2.3.2 (quick reference) - w3.org/WAI/quickref
Last updated . Reviewed by the EqualWeb accessibility team.
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