7.1. Until users agents allow users to control flickering, avoid causing the screen to flicker.
Checkpoint
7.1. Until users agents allow users to control flickering, avoid causing the screen to flicker.
Avoid causing the screen to flicker
Flickering or flashing on a website can cause a person with photosensitive epilepsy to have a seizure (4 to 59 flashes per second). Avoid quickly refreshing content or animated gifs, strobe light effects, the blink tag, and quick changes from dark to light.
Provide a way for the user to freeze or stop moving content, or pages that refresh frequently.
Reading material
- Information about Photosensitive Epilipsy from'Epilepsy Action
- Photosensitive Epilepsy and Web Design