Motion animation does not include changes of color, blurring, An element which appears instantly without transitioning If removed, would fundamentally change the information or functionality of the content,Īnd information and functionality cannot be achieved in another way that would conformĪddition of steps between conditions to create the illusion of movement or to giveįor example, an element which moves into place or changes size while appearing isĬonsidered to be animated.
Gx: Allowing users to set a preference that prevents animation.C39: Using the CSS reduce-motion query to prevent motion.Techniques, see Understanding Techniques for WCAG Success Criteria, particularly the "Other Techniques" section. It is not necessary to use these particular techniques. That the WCAG Working Group deems sufficient for meeting this Success Criterion. iOS: Reduce Motion on iPhone, iPad or iPod touchĮach numbered item in this section represents a technique or combination of techniques.Designing Safer Web Animations for Motion Sensitivity.An Introduction to the Reduced Motion Media Query.Demonstration of 'prefers-reduced-motion' in Webkit.Mozilla documentation for 'prefers-reduced-motion'.Resources are for information purposes only, no endorsement implied. Tool the author needs to preview the animation. A web application provides a feature to author animated sequences.The user enables the reduce motion preference, the page-flipping animation is turned Is a page-flipping animation that respects the reduce-motion CSS media query. A site includes a non-essential transition when loading new content.Transitions that support the reduce motion preference:.The ability to turn off non-essential animations is a site-wide setting. Decorative elements move inĪnd out of view horizontally when the essential page content is scrolled vertically.Ī control at the top of each page allows the user to turn off unnecessary animations.
A site includes extra animations when the user scrolls.Parallax scrolling with option to turn off unnecessary motion globally:.Now I have to turn off my computer and go lie down." Persona Quote: "Stop that extra movement! You are making me so dizzy I cannot concentrate.Vestibular (innerĮar) disorder reactions include distraction, dizziness, headaches and nausea. Non-essential movement can trigger vestibular disorder reactions. People with vestibular disorders need control over movement triggered by interactions.To the scrolling interaction in a responsible way. The essential scrolling movement so it is allowed. What about movement caused by a user scrolling a page? Moving new content into the viewport is essential for scrolling. TakeĪdvantage of the reduce motion feature in the user agent or operating system. ProvideĪ control for users to turn off non-essential animations from user interaction. How can a website reduce the chances of triggering a vestibular disorder? Choose any one of the following solutions. Reactions include nausea, migraine headaches, and potentially needing bed rest to The impact of animation on people with vestibular disorders can be quite severe. In contrast, 2.2.2 Pause, Stop, Hide applies when the web page initiates animation. "Animation from interactions" applies when a user’s interaction initiates non-essentialĪnimation. Animation that isĮssential to the functionality or information of a web page is allowed by this Success Occurs when backgrounds move at a different rate to foregrounds. Vestibular (inner ear) disorder reactions include dizziness, nausea and headaches.Īnother animation that is often non-essential is parallax scrolling. For example, if scrolling a page causes elements to move (other than theĮssential movement associated with scrolling) it can trigger vestibular disorders. Some users experience distraction or nausea from animatedĬontent. The intent of this Success Criterion is to allow users to prevent animation from beingĭisplayed on Web pages. In brief Objective Users are not harmed or distracted by motion Author task Support user preferences for motion, and eliminate unnecessary motion effects Intent
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