Level AAAOperable
2.2.4

Interruptions

Let people postpone or turn off interruptions like popups and auto-refreshes, except for genuine emergencies.

In plain English

Interruptions are things that jump in while someone is trying to use your page: a discount popup, a chat window that opens itself, prices that refresh and shift under your cursor. For people using screen readers or with attention and cognitive differences, these are deeply disruptive. This AAA rule says let people postpone or switch them off, unless it is a true emergency.

Who this is for

  • Screen-reader users, whose reading is thrown off when content changes unexpectedly.
  • People with attention or cognitive differences, derailed by sudden popups.

How to check and fix it yourself

Note everything on your store that appears or changes without the user asking. Give a clear way to dismiss or disable it, or do not auto-trigger it at all.

Newsletter popup on a timer, with a clear persistent close.   ✓ (better: on click)
Chat window that auto-opens repeatedly, no off switch.        ✗
Auto-refreshing content the user can pause.                   ✓

Where we can help

We catalogue the auto-interruptions on your store, popups, self-opening chat, auto-refreshes, and flag those with no way to stop them. Aggressive popups also hurt conversion, so this often aligns with fixes that help sales.

How to meet it

Techniques the W3C accepts as sufficient (summarized). Follow a link for the full method.

Frequently asked questions

What does interruptions require?+

Success Criterion 2.2.4 (Level AAA) says people must be able to postpone or suppress interruptions, popups, alerts, auto-updating content, unless the interruption is a genuine emergency.

What counts as an interruption on a store?+

Newsletter and discount popups that appear while you're reading, chat windows that pop open on their own, auto-refreshing prices or banners, and 'someone just bought this' notifications. Anything that grabs attention or moves the page without the user asking.

How do I meet it?+

Don't auto-trigger popups and moving alerts, or give a clear, persistent way to turn them off. Let people opt in to updates rather than pushing them. Emergencies (a real safety or security alert) are exempt.

Reference

This is a plain-language explainer. The authoritative source is the W3C Web Content Accessibility Guidelines (WCAG) 2.2.

WCAG 2.2 © W3C. Excerpts are paraphrased; see the linked documents for the normative text.

Not sure if your store passes 2.2.4?

A human auditor checks this and every other criterion against your live store, and documents the result.

Book an audit