- Success Criterion 2.3.1
- Conformance level A
Loading Spinner Built as a Rapid Full-Screen Flicker
2.3.1 — Three Flashes or Below Threshold
Scenario
Setting
A news outlet's article page
What’s wrong
Loading spinners implemented as full-region white/dark flicker.
Example
A news outlet's article page shows the problem clearly: loading spinners implemented as full-region white/dark flicker.
Why it matters
People with photosensitive epilepsy and others sensitive to rapid flashing. In this case (a news outlet's article page), they lose their place when content moves unexpectedly.
How to test
Review full-region loading spinners/flicker effects with PEAT: white/dark flicker patterns above threshold fail.
How to fix
Nothing may flash more than 3 times per second above the general or red-flash thresholds.
Outcome
Once corrected, a news outlet's article page lets them finish the task at their own pace.
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
- Unedited Video With Strobe or Lightning Effects
- 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