Is the Accessibility DevTools Chrome extension free?

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.

What accessibility standards does it check?

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.

How is it different from a standalone accessibility scan?

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.

Can I scan multiple pages or a full user workflow?

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.

Does it work on staging or password-protected sites?

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.

How do I install the Accessibility DevTools extension?

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.

What is accessibility testing?

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).

What is the best accessibility testing tool?

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.

What does an automated accessibility checker not catch?

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.

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

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.

Can I automate accessibility testing across browsers and devices?

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.

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

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

Powered by Axe-core - Ensure website accessibility with Accessibility DevTools Chrome extension. Easily test, manage, and report accessibility issues.

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Accessibility DevTools Chrome Extension by TestMu AI

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Scan and detect WCAG issues, fix what matters, and track accessibility health from one centralized dashboard using Accessibility DevTools Chrome Extension by TestMu AI.

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Issue Discovery

Swift Issue Discovery

Accelerate accessibility consistency and compliance. Instantly catch and fix the most common WCAG errors right in your browser, with no extra setup.

Add to Chrome

Instantly flag the most common WCAG accessibility errors.
Resolve issues directly in your browser, no extra setup needed.
Speed up consistency and compliance across every release.

Critical Concerns

Addressing Critical Concerns

Efficiently classify and tackle vital accessibility issues using error grouping, ensuring your website meets the highest standards of accessibility and user experience.

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How does triage work?

Group errors by severity

Prioritize WCAG-critical fixes

Track recurring issues

Audit-ready reporting

Health Monitoring

Effortless Health Monitoring

Monitor your website's accessibility and overall health from one centralized dashboard, and stay in control of every release.

Add to Chrome

One centralized dashboard for accessibility health.
Track accessibility trends and improvements over time.
Surface regressions before they reach production.

Types of Accessibility DevTools Scans

Full Page Scan

Conduct full-page accessibility scans to ensure complete compliance of every element.

Partial Page Scan

Focus your accessibility scans on specific web page elements for targeted issue identification and resolution.

Multi-Page Scan

Efficiently ensure website consistency with automated accessibility scans across multiple URLs simultaneously.

Workflow Scan

Advanced, continuous accessibility scanning captures dynamic interactions and page changes.

Keyboard Scan

Identify and highlight the order of keyboard navigation elements to ensure smooth and accessible user interactions.

Guided Manual Review

Catch the issues automated scans can't judge, then confirm or reject each one by hand.

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Run accessibility scans on shared cloud infrastructure across browsers and devices with zero setup.

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