CheckFox • Accessibility Companion Firefox

CheckFox • Accessibility Companion

Automated accessibility scanning and audit helper for CheckFox auditors.

Features & Capabilities

CheckFox • Accessibility Companion accelerates manual accessibility audits. It runs an automated axe-core + CheckFox improved scan on the page you're auditing, maps every result to WCAG 2.2, RGAA 4.1.2 and RAWeb 1.1 criteria, and gives you a library of in-page visual tools to verify what automation can't.

It's a starting point, not an autopilot: the extension pre-fills findings and surfaces evidence, you always validate or override.

FEATURES

  • Automated scan — injects axe-core into the active tab and returns a structured violation list (rule, impact, selector, HTML snippet, help link, WCAG tags).
  • Extended coverage — custom checks reach RAWeb/RGAA criteria axe-core doesn't cover: media (autoplay, controls, descriptions), links opening new windows (13.2), obsolete presentational elements (8.9), downloadable documents (13.3), canvas/embedded images (1.1.7–1.1.8) and focus visibility (10.7).
  • Triple criteria mapping — every result is mapped to WCAG 2.2, RGAA 4.1.2 and RAWeb 1.1 criterion IDs via a self-contained, auditable mapping layer.
  • Visual audit tools — 30+ toggleable in-page overlays for images, links, headings, landmarks, ARIA, tables, language & reading direction, focus, tab order and forms.
  • CheckFox sync — push pre-filled findings into your matching audit sample, pull existing findings as read-only context, and mark whole topics Not Applicable. NOTICE: not available for non-beta testers at the moment.
• Side panel or popup, and a bilingual EN/FR interface, both toggleable in Settings.

HOW TO USE

  1. Click the CheckFox icon in the toolbar (or open the side panel).
  2. Click Scan to run axe-core + custom checks on the current page.
  3. Review the findings and their WCAG/RGAA/RAWeb criteria.
  4. (Optional) In Settings, paste your CheckFox API key to push findings to an audit on checkfox.eu.
PRIVACY

The extension only acts on the active tab when you run a scan or toggle a tool. Your CheckFox API key and preferences are stored locally on your device. Page data (the URL and the findings you choose to push) is sent only to your own CheckFox account at checkfox.eu, over HTTPS, and only when you explicitly connect or push. No analytics, no tracking, no data sold or shared. -> Full policy

PERMISSIONS

"Read and change data on sites you visit" — needed to inject the scanner and read the DOM of the page you're auditing. Auditors can't know which sites they'll audit in advance, so all-sites access is required; the extension only activates on the active tab when you act.

SUPPORT

Questions or bugs? Open the "About" tab in the extension, and hit the e-mail address.

Version 0.3.0

  • Added five custom checks extending axe-core into RAWeb/RGAA criteria (new windows, obsolete elements, downloads, canvas/embed images, focus visibility).
  • Added the ability to "jump to the element" triggering the accessibility issue directly from the side-panel.

Version 0.2.0 Added the connection between CheckFox audits and the extension.

Version 0.1.0 First release with basic tools and scan.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Geoffrey
Daily users:
1
Version:
0.4.0 Last updated: 2026-07-01
Version code:
6332741
Creation date:
2026-06-20
Risk:
Moderate risk impact High risk likelihood
Permissions:
Host permissions:
  • <all_urls>
Content scripts matches:
  • <all_urls>
Size:
352.76KB
Email:
ex*****@checkfox.eu
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-07-26
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Geoffrey
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/checkfox-accessibility/
Email:
ex*****@checkfox.eu
Website:
https://checkfox.eu/support

Is CheckFox • Accessibility Companion Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

CheckFox • Accessibility Companion requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

CheckFox • Accessibility Companion is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
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