- Success Criterion 2.3.1
- Conformance level A
Unedited Video With Strobe or Lightning Effects
2.3.1 — Three Flashes or Below Threshold
Scenario
Setting
A pharmacy app's prescription-refill form
What’s wrong
Video content with lightning/strobe sequences unedited and above threshold at typical viewing size.
Example
A pharmacy app's prescription-refill form runs into this exact issue: video content with lightning/strobe sequences unedited and above threshold at typical viewing size.
Why it matters
People with photosensitive epilepsy and others sensitive to rapid flashing. On a pharmacy app's prescription-refill form, this barrier means they lose their place when content moves unexpectedly.
How to test
Review video content with lightning/strobe sequences through PEAT at the size it's typically viewed: unedited footage above threshold fails.
How to fix
Nothing may flash more than 3 times per second above the general or red-flash thresholds.
Outcome
Corrected, a pharmacy app's prescription-refill form now lets a visitor read the content without losing their place.
Who is affected
People with photosensitive epilepsy and others sensitive to rapid flashing.
Learn more
- Understanding Understanding document (opens in a new tab)
Related scenarios
- Content Flashing Faster Than 3 Times per Second
- Strobe Intro or Glitch Effect Above the Flash Threshold
- Rapid Full-Screen Color Flash on Load or Error
- Ad or User-Generated Content Never Screened for Flashing
- Rapid Hover Effect That Flashes When a Key Autorepeats
- Loading Spinner Built as a Rapid Full-Screen Flicker