Web Development
Web Developer Guidelines
Visual Design Recommendations

Checkpoint 1.8 - Flash

All movement can be stopped

WCAG 1.0 Priority 2

WCAG Guideline 7. Ensure user control of time-sensitive content changes.

Constant movement could be very distracting for users, especially those with learning difficulties or other cognitive disabilities. Animated text could also be hard to read for some users.

It is important to ensure that any animation can be stopped by either its own accord or by the users.

Requirement

Avoid constant movement on the screen. Ensure all movement can be stopped.

Checking Tool

  • View the web pages in a browser to ensure that no images or other screen components cause flickering or blinking on the screen.
  • Internet Explorer - AIS toolbar: Tools > Simulations > Flickering Images Demo

Information Source

The original source of this information is located on the W3C web site  (www.w3.org/TR/WCAG10-TECHS/#tech-avoid-movement)

 

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