WCAG 2.3.3 Animation from Interactions
AAA only: motion animation triggered by interaction (like a parallax scroll effect) can be disabled, unless the motion is essential to the function.
Table of contents
What WCAG 2.3.3 Requires
AAA only: motion animation triggered by interaction (like a parallax scroll effect) can be disabled, unless the motion is essential to the function.
How to Test It by Hand
Check whether the site respects the operating system's "reduce motion" setting or offers its own toggle for interaction-triggered animation.
Common Failures
- A parallax scrolling effect has no way to turn it off and does not respect prefers-reduced-motion.
Testing WCAG 2.3.3 With AccessBell
This criterion depends on meaning or context, so it needs a person to judge. AccessBell's report lists it for manual review rather than marking it pass or fail automatically, so it is not missed.
Run a free scan to spot issues on your own pages.
Related Criteria in Seizures and Physical Reactions
- 2.3.1 Three Flashes or Below Threshold (Level A, WCAG 2.0)
- 2.3.2 Three Flashes (Level AAA, WCAG 2.0)
Frequently Asked Questions
What does WCAG 2.3.3 require?
AAA only: motion animation triggered by interaction (like a parallax scroll effect) can be disabled, unless the motion is essential to the function.
Can AccessBell test WCAG 2.3.3 automatically?
Not fully. This criterion needs a person to judge, so AccessBell's report lists it for manual review rather than marking it pass or fail on its own.
What level is WCAG 2.3.3?
Level AAA, added in WCAG 2.1. Level AAA is the highest, most demanding conformance level in WCAG.
Sources
- W3C: Understanding 2.3.3 Animation from Interactions (opens in a new tab)
- W3C: Web Content Accessibility Guidelines (WCAG) 2.2 (opens in a new tab)
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