Question 1

Is the Accessibility DevTools Chrome extension free?

Accepted Answer

Yes. The Accessibility DevTools Chrome extension is free to install from the Chrome Web Store. You can run full-page, partial, multi-page, workflow, and keyboard accessibility scans without a paid plan.

Question 2

What accessibility standards does it check?

Accepted Answer

It checks pages against WCAG 2.1 and 2.2 (A and AA), and flags issues relevant to ADA and Section 508. The engine is powered by axe-core, the same open-source rule set used across the industry. For full platform coverage, see accessibility testing tools.

Question 3

How is it different from a standalone accessibility scan?

Accepted Answer

A standalone browser scan checks one page at a time. Accessibility DevTools adds a centralized dashboard, multi-page and workflow scans, keyboard-navigation checks, and error grouping so you can triage WCAG-critical issues by severity across releases.

Question 4

Can I scan multiple pages or a full user workflow?

Accepted Answer

Yes. Beyond a single Full Page Scan, it supports Partial Page, Multi-Page, Workflow, and Keyboard scans that capture dynamic interactions and navigation order. See how the keyboard scan works.

Question 5

Does it work on staging or password-protected sites?

Accepted Answer

Because the extension runs inside your browser, it scans whatever page you can open, including local, staging, and authenticated environments. Nothing needs to be publicly accessible to run a scan.

Question 6

How do I install the Accessibility DevTools extension?

Accepted Answer

Add it to Chrome from the Chrome Web Store, pin it to your toolbar, then open it on any page to run a scan. Step-by-step setup is covered in the Accessibility DevTools documentation.

Question 7

What is accessibility testing?

Accepted Answer

Accessibility testing checks whether websites and apps can be used by people with visual, auditory, motor, and cognitive disabilities. It evaluates a product against standards like WCAG, which are built on four principles: Perceivable, Operable, Understandable, and Robust (POUR).

Question 8

What is the best accessibility testing tool?

Accepted Answer

For testing on the go, the TestMu AI Accessibility DevTools Chrome extension combines full-page, partial, multi-page, workflow, and keyboard scans with a dashboard that summarizes your site's accessibility health. For automated, scheduled, and cloud-scale audits, pair it with TestMu AI accessibility testing.

Question 9

What does an automated accessibility checker not catch?

Accepted Answer

Automated scans surface roughly 57% of WCAG issues by volume - missing alt text, low color contrast, missing form labels, and ARIA errors - based on studies of large page samples by the maintainers of axe-core. They cannot judge context like whether alt text is meaningful, the logical reading order, or whether a custom widget is keyboard-usable, so pair automated scans with manual keyboard and screen-reader testing for full WCAG coverage.

Question 10

How do I test a website for accessibility with the extension?

Accepted Answer

Install the extension, open the page you want to check, then run a Full Page Scan, or a Workflow Scan to capture clicks and navigation. Review the issues grouped by severity, fix them directly in the browser, and re-scan to confirm. Use a Multi-Page Scan to check several URLs at once and a Keyboard Scan to verify navigation order.

Question 11

Can I automate accessibility testing across browsers and devices?

Accepted Answer

The Chrome extension is built for manual, on-demand checks in your browser. Because it runs on axe-core, the issues you fix line up with the same rules teams run in CI. To run those checks automatically on every build across real browsers and devices, use TestMu AI accessibility automation.

Question 12

What should you look for in an accessibility checker Chrome extension?

Accepted Answer

Look for an engine you can trust (axe-core is the open-source standard), scans beyond a single page (multi-page, workflow, and keyboard scans), severity grouping so you can triage fixes, and a dashboard to track progress. Accessibility DevTools covers all four for free, and connects to TestMu AI accessibility testing when you need automated, cloud-scale audits.

Accessibility DevTools Chrome Extension by TestMu AI

Everything You Need for Accessibility Testing