What is it?

Animated gifs, slideshow animations, or video clips that flash at 3 frames per second or faster pose a series risk of inducing epileptic seizures in some viewers.

Impact

2.9 million U.S. adults 18 years and older have active epilepsy. Avoid or limit flashing content, which can trigger seizures in susceptible individuals and can be distracting or annoying for users in general.

Dos and Don'ts

• Don’t include content that flashes more than three times in any one second. 
  • Instead, do use high-contrast colors and icons for visuals intended to prompt action.
• Do limit how much content on the screen is flashing.
  • Any flashes that happen at the same time cannot take up more than 25% of pixel area on the screen. 

How-To

• University of Maryland's Photosensitive Epilepsy Analysis Tool

Need More Help?

You can always book a one-on-one consultation, visit one of our ed tech labs, or email cat@temple.edu for additional assistance!