Making accessibility standards easy to understand, one success criterion at a time.

guideline: Seizures and Physical Reactions

Prevent content from triggering seizures or adverse reactions.

WCAG 2.0, 2.1, 2.2 Level A

2.3.1 Three Flashes or Below Threshold

Flashing content must not exceed three flashes per second unless it is within safe limits.

Sensory
Cognitive, Visual
Content, Design
WCAG 2.0, 2.1, 2.2 Level AAA

2.3.2 Three Flashes

Flashing content must never exceed three flashes per second, without exceptions.

Sensory
Cognitive, Visual
Content, Design
WCAG 2.1, 2.2 Level AAA

2.3.3 Animation from Interactions

Animations triggered by interactions like button presses can be turned off.

Sensory
Cognitive, Visual
Code, Design