Is axe DevTools® - Web Accessibility Testing safe?

Clean risk

Tests web pages for accessibility issues from Firefox DevTools.

This extension adds axe DevTools accessibility testing for developers, testers, and designers. It analyzes a site on demand, shows common accessibility issues, lets users inspect the source of problems, and provides remediation guidance. Its permissions allow it to run in DevTools, access the active tab and web pages, use browser storage, and work across all URLs.

Deque Systems Inc.Firefox Add-ons
0Risk
Who publishes it

Deque Systems Inc. - no other listings under this identity, 3 shared hostnames

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Deque Systems Inc.

Shared hosts - 3 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

axe.deque.com
Also called by 2 other listings, including axe DevTools
docs.deque.com
Also called by 2 other listings, including axe DevTools
usage.deque.com
Also called by 2 other listings, including axe DevTools

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Updated 15 October 2026amo-646300