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.
Can AccessBell Test This Automatically?
Not fully. Like most WCAG criteria that depend on meaning or context, this one needs a person to judge. AccessBell's report lists it for manual review rather than marking it pass or fail automatically, so it never gets missed.
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.
Related Criteria in Seizures and Physical Reactions
WCAG 2.3.3 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)
This page explains a technical standard and is not legal advice. See our disclaimer.