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WCAG Explorer (beta)

This resource is designed for anyone eager to master digital accessibility. Explore WCAG success criteria through clear, easy-to-understand descriptions. We owe a special "hat tip" to Johannes Lehner’s WCAG Card Deck, which served as the inspiration for this project.

We plan to expand this library over time, so please check back regularly for updates.

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  • 2.3 Seizures and Physical Reactions

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  • Operable

3 success criteria found for Operable principle 2.3 Seizures and Physical Reactions category

Success criterion 2.3.1 Three Flashes or Below Threshold

Level Level A, WCAG principle: Operable

Assigned to the following themes: SENSORY

Content must not flash, blink, or flicker more than three times per second, unless it stays within safety limits designed to avoid visual overload and reduce the risk of seizures.

Success criterion 2.3.2 Three Flashes

Level Level AAA, WCAG principle: Operable

Assigned to the following themes: SENSORY

Content must not flash, blink, or flicker more than three times per second (no exception, not even if it meets safety thresholds).

Success criterion 2.3.3 Animation from Interactions [2.1 and 2.2]

Level Level AAA, WCAG principle: Operable

Assigned to the following themes: SENSORY

Animations triggered by interaction (e.g. on click, hover, tap) must be possible to:

  • disable through system settings (e.g. "reduce motion"), or
  • turn off using a site-level option.