2.3 Avoid movement in content
WAI checkpoint 7.3
Full WAI text: "Until user agents allow users to freeze moving content, avoid movement in pages." User agents are software which people use to access Web content. User agents could be desktop graphical browsers, text browsers, voice browsers, mobile phones, multimedia players, plug-ins, and some software assistive technologies used in conjunction with browsers such as screen readers, screen magnifiers, and voice recognition software.
Examples of moving content include animations or continually scrolling news tickers. Not all user agents allow users to freeze moving content. Until such time as they do, avoid presenting it on web pages.
Content that moves continuously is distracting and annoying for most users. Users who read visually often hide animations or moving text from view by covering it with their hands, a piece of paper or by scrolling the page so it can't be seen.
Links that are presented as a continually scrolling list require users to read the list and decide to follow one link before it disappears. This is tedious because many people prefer to read the entire list before making a choice. Clicking on moving links can be difficult for users with limited dexterity.
Screen reader users find moving content difficult or impossible to use because screen readers do not cope with content that changes continually within the browser window.Users with reading or concentration difficulties find moving content difficult to comprehend and users with poor vision find it very hard to focus on moving content.
"I hate scrolling displays. They're nice because they are dynamic and they get your attention but I can't actually read them because I can't focus on moving text." - user with low vision
Directions and Techniques
There are no specific techniques recommended for this guideline.
How you could check for this:
There are no specific test methods recommended for this guideline.