1.5 KiB
1.5 KiB
2.3.1 Three Flashes or Below Threshold
- Level: A
- Guideline: 2.3 Seizures and Physical Reactions
- Principle: 2 Operable
What it is
Web pages do not contain anything that flashes more than three times in any one second period, or the flash is below the general flash and red flash thresholds.
How to test
- Check: Web pages do not contain anything that flashes more than three times in any one second period, or the flash is below the general flash and red flash thresholds.
- Use the sufficient techniques below as acceptable methods when applicable.
Sufficient techniques (W3C)
- G19: Ensuring that no component of the content flashes more than three times in any 1-second period
- G176: Keeping the flashing area small enough
- G15: Using a tool to ensure that content does not violate the general flash threshold or red flash threshold
Notes
- Note: Since any content that does not meet this success criterion can interfere with a user's ability to use the whole page, all content on the web page (whether it is used to meet other success criteria or not) must meet this success criterion. See Conformance Requirement 5: Non-Interference.