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Additional Resources

View WAI checkpoint 7.1 - Until user agents allow users to control flickering, avoid causing the screen to flicker.

Priority 1 Item 4
Avoid causing the screen to flicker.

Do

The background on this page does not flicker.

Don't Do

Avoid Flashing images and backgrounds whenever possible.

Why avoid flickering screens?
Flickering/flashing Web page elements can cause seizures in users with photosensitive epilepsy.

Avoid Java applets/ActiveX objects and JavaScript/other scripting languages that cause the screen to flicker or otherwise strobe light effect.

Note: BLINK and MARQUEE tags should not be used. (Naval Facilities Engineering Command (NAVFAC))