Flashing and flickering content

Applies to

• Websites
• Videos

Overview

Content that flashes or flickers can trigger seizures in people who are susceptible, and should be avoided.

Techniques

• Flashing and flickering content on websites

WCAG 2.1 success criteria

The issues described on this page, and associated Techniques pages, map to the following success criteria in the W3C’s Web Content Accessibility Guidelines (WCAG) 2.1:

• 2.3.1 Three Flashes or Below Threshold (Level A)