3.2.5 Change on Request
Conformance level: AAA
Criterion released in WCAG version: 2.0
TL;DR: Major changes (like opening new windows, auto-refresh, redirects) should happen only when the user requests them. Avoid surprise behaviour that disrupts navigation or assistive tech.
Official description of the success criterion
Changes of context are initiated only by user request or a mechanism is available to turn off such changes.
What to do?
Ensure changes of context are initiated only upon user request.
Why is it important?
Provides predictability and control to users.