Level: Intermediate
Certain animations and motion effects can cause genuine physical discomfort for visitors with vestibular disorders or motion sensitivity, making this a real accessibility consideration, not just a stylistic preference.
Respect a Visitor's Reduced Motion Preference
Modern browsers let a visitor indicate a system-level preference for reduced motion, which a well-built site should detect and honor by minimizing or removing non-essential animation.
Avoid Large-Scale, Fast, or Parallax Motion by Default
Sweeping, fast-moving animation effects are more likely to cause discomfort than small, subtle transitions, which is worth factoring into how aggressively motion is used.
Provide Essential Information Without Relying on Motion Alone
Any critical information conveyed through animation should also be understandable without it, for visitors who have motion effects disabled or reduced.
Next step: Use the Get Source Code of Webpage to review your site's animation code to check whether it currently respects a visitor's reduced motion preference.