1.4.13 Content on Hover or Focus

Tooltips and pop-up content triggered by hovering or focusing on an element must meet three conditions. First, it must be dismissible: the user can close it without moving their pointer or focus (typically by pressing Escape). Second, it must be hoverable: the pointer can move onto the additional content without it disappearing. Third, it must be persistent: it stays visible until the user dismisses it, moves focus, or removes the pointer.

These requirements address specific problems for users with low vision who zoom in and need to read tooltip content, and users with motor disabilities who may move their pointer slowly.

Add keyboard dismiss support: pressing Escape should close any tooltip or pop-up content without moving focus elsewhere.

Make tooltips hoverable by ensuring the pointer can move from the trigger onto the tooltip without the tooltip closing.

Keep tooltips visible until actively dismissed. Do not auto-close them after a timeout.

• Tooltip that disappears when the pointer moves from the trigger toward the tooltip
• Tooltip with no way to dismiss it without moving the pointer or focus
• Pop-up content that auto-closes after a few seconds

This criterion only applies to content triggered by hover or focus that is not already part of the normal page flow. It does not apply to browser-native tooltips created with the title attribute, as those are controlled by the browser, not the page.