Who is it for?
- Useful for developers who want to catch common accessibility errors before release with a short quick scan.
- Useful for teams who want to go beyond automated scanning with guided manual steps toward a WCAG 2.1 AA evaluation.
Accessibility Insights for Web — Website Speed and Accessibility Test
Microsoft
Accessibility Insights for Web is a Microsoft tool that runs as a Chrome and Microsoft Edge extension, with FastPass for a quick scan and Assessment for step-by-step WCAG 2.1 AA evaluation.
Why it fits
| Good to know | Extension |
|---|---|
| Free output | Yes |
| No account needed | — |
| No watermark | — |
| Works offline | — |
| Batch processing | — |
| Content language | — |
— Unverified conditions. Official documentation reviewed. The app itself has not been hands-on tested. Matches only documented content-language support, not interface language.
Sources and review date2
Founder feedback and correction
Editorial selection guide
Last checked:
Getting started
- Install the extension in Chrome or Microsoft Edge and open the page you want to check.
- Run FastPass first; fix the errors found by automated checks through the highlighted elements.
- If you need a deeper review, start Assessment, complete the guided tests in order and note their results.
Decision points
- The official site separates FastPass, a quick scan for common high-impact issues, from Assessment, a more thorough conformance evaluation; choose FastPass when time is short and Assessment when you need a record.
- The documentation names only Chrome and the new Microsoft Edge; plan another method if you need to check in Firefox or Safari.
Limits
- According to the documentation, automated checks cover roughly 50 accessibility requirements; about 20 tests in Assessment are guided step by step and many are assisted, meaning they need a human decision.
- The official site says optional, anonymized usage data is collected; check this setting in managed environments. This entry covers the web extension, not the Windows desktop application.
Frequently asked questions
Does Accessibility Insights prove my site is WCAG compliant?
No. Automated checks cover only part of the requirements; many Assessment tests need manual verification. The result is part of your own review, not a conformance certificate.
Can I also check my mobile app with it?
This entry describes only the Chrome and Edge web extension. The official site also mentions a Windows desktop application; mobile app checking was not verified here.