Free Web Accessibility Checker
Extension for Chrome
Instantly audit any webpage for WCAG, ADA, and EAA accessibility issues right inside your browser. Check color contrast, alt text, focus order, heading structure, and more in seconds, through an interface simple enough that you won’t need a tutorial. No complex tools or setup required.
- No sign-up required
- Supports WCAG 2.0, 2.1 & 2.2
What’s Inside the WebYes Accessibility Checker Chrome Extension?
Everything you need for a fast, reliable first-pass accessibility audit.
Scan your page against WCAG accessibility standards
Test against WCAG 2.0, 2.1, and 2.2 at Levels A, AA, and AAA. Every issue maps to its WCAG criterion and level. After the scan, filter by version and conformance level to see only what applies to your target standard.
Accessibility Best Practices Audit
Catch the accessibility barriers that pass automated rules but still create real friction for users with disabilities.
See accessibility issues exactly where they occur
Get issue highlights directly on the page so you instantly know what’s broken, in context, without digging through reports.
Test colors until they pass WCAG contrast
Test any color pair against WCAG contrast thresholds, adjust until it passes, then copy the compliant HEX code directly.
Experience your page as users with disabilities do
Simulate dyslexia, low vision, and colour blindness in the browser to spot barriers that no automated check can surface.
Focus order visualization
See the full keyboard navigation sequence across all interactive elements and catch broken tab orders before users do.
Detect missing image alt text
View every image alongside its alt description in a single panel to quickly spot missing, empty, or inaccurate alt text.
Validate heading structure
Inspect your full H1-H6 hierarchy at a glance and catch skipped levels, duplicate H1s, and structural issues instantly.
Map your ARIA landmarks and page regions
Confirm that screen reader users can navigate your page structure efficiently. See every landmark and region in one view.
Audit accessibility on desktop and mobile layouts
Test accessibility across both desktop and mobile page views in a single session, no extra tools or devices required.
Download a full report ready to share with clients
Get your score out of 100, every issue mapped to its WCAG criterion, code snippets, and recommendations in a shareable PDF.
How to use the accessibility checker
extension by WebYes?
Up and Running in Under 60 Seconds
Trusted by developers, designers, and website
owners worldwide
See how the WebYes Accessibility Checker helps developers, designers, and QA teams catch accessibility issues faster: during development, testing, and content reviews.
“I run a tech company that builds websites and applications for small and medium size charities in the UK. UK and EU law means that accessibility isn’t an afterthought but something that needs to be implemented.
WebYes makes that easy to do. With a couple of clicks I can get an almost instant insight into my clients existing websites accessibility, allowing me to understand what needs improvement and when. The layout, the dashboard, the entire UI is really intuitive. I have no problems recommending WebYes to even my least technologically able clients. If you build websites or web-applications, and not just in WordPress, this works with any website. WebYes is an absolutely essential addition to your digital toolkit.”
“Very useful and easy-to-use tool for detecting accessibility problems. A comprehensive tool for the WCAG matters!”
“A nice product. Loved the focus order feature.”
“A reliable tool that makes accessibility testing faster and more efficient.”
“Simple and handy tool for performing quick scanning. kudos to everyone who worked on it”
“Practical tool for Marketing and Design. Easy to use, shows real optimizations in real time.”
“This is exactly the kind of tool I’ve been looking for. What matters most to me is quickly understanding whether my overall product is on the right track, accessibility wise.
The UI is simple, fast. I like that it checks against WCAG standards clearly and gives instant confidence without turning it into a long audit exercise. Ran it on multiple pages and it was consistently accurate and easy to understand. Highly recommend it!”
“Really useful for quickly checking website accessibility. Easy to spot WCAG issues, color contrast, headings, and focus order right in Chrome. Simple, clean, and helpful for designers like me.”
Who is this Accessibility Checker extension for?
Built for Every Role That Touches a Web Page
Developers
Catch WCAG failures during development, not after. Fix issues when they’re still a five-minute job.
Designers
Validate contrast, heading hierarchy, and focus order before handoff. Stop catching design-stage issues in QA.
QA Teams & Accessibility Auditors
Run a fast check alongside your test suite, or before a manual audit. Save your expertise for what automation can’t catch.
Content Teams
Check alt text accuracy, heading logic, and link clarity on every page before it goes live.
Business Owners & Product Managers
ADA and EAA apply to your website. See where you stand before a complaint or a launch.
Freelancers
Deliver accessibility-reviewed work on every project at no extra cost and with no extra tools.
How the Accessibility Checker Extension Compares to WAVE and axe DevTools
All three tools help identify accessibility issues.
WebYes brings the rest of your accessibility workflow into the same extension, including:
- Color contrast checker
- Disability simulations
- PDF reports
- Desktop & mobile testing
| Features | WebYes Accessibility Checker | WAVE | axe DevTools |
|---|---|---|---|
| WCAG 2.0, 2.1 & 2.2 scanning at A, AA, AAA | Yes | Yes | Yes |
| Color contrast adjustment tool | Yes | Yes | No |
| Disability experience simulations (dyslexia, low vision, colour blindness) | Yes | No | No |
| ARIA landmark visualization | Yes | Yes | No |
| Scored PDF report for client handoff | Yes | No | No |
| Desktop and mobile testing in one session | Yes | No | No |
These details are based on publicly available information and our current understanding of each extension. Features may have changed since this was written. Check each tool’s Chrome Web Store listing for the most current information.
Frequently asked questions
An accessibility checker extension is a browser tool that audits a webpage against WCAG accessibility standards and highlights issues directly on the page. It runs in your browser without any external setup or DevTools knowledge, so you can test any page as you’re building or reviewing it.
Yes. The WebYes accessibility checker extension is completely free on the Chrome Web Store. No credit card, no account, and nothing locked behind a paid tier. Install it and start testing immediately.
It checks for WCAG 2.0, 2.1, and 2.2 violations at Levels A, AA, and AAA, with results mapped to ADA, EAA, and Section 508. Beyond automated WCAG checks, it also covers color contrast, heading structure, keyboard focus order, image alt text, ARIA landmark mapping, best practices, and disability experience simulations.
WAVE and axe are solid for core WCAG scanning. WebYes adds several things those tools don’t include in a single free extension: disability experience simulations (dyslexia, colour blindness, low vision), an interactive color contrast tester where you adjust colors until they pass, a PDF report with a score out of 100 ready for client handoff, ARIA landmark visualization, and desktop and mobile layout testing in one session. Everything runs locally in your browser, so no data leaves your machine.
Yes. Install it free from the Chrome Web Store. There’s no credit card required and nothing locked behind a premium tier.
Yes. It runs on any page you can open in Chrome or Edge, including localhost and password-protected staging environments.
The extension checks against WCAG 2.0, 2.1, and 2.2 at conformance levels A, AA, and AAA. You can select your target version and level after running a scan.
The extension scans one page at a time, which suits quick audits during development and QA. For full-site scanning, the WebYes Accessibility platform handles that.
No automated tool can guarantee full compliance. Checks like this surface around 25-40% of WCAG issues, mainly those that can be evaluated programmatically. The rest requires human judgment and testing with actual assistive technology.
No. All analysis happens locally in your browser. The extension does not collect or transmit any data from your browsing activity.
It’s built for anyone who builds, designs, or manages websites and needs fast accessibility feedback without complex tooling.
While it’s built for Chrome, you can also use the extension on Edge.
Download the extension from the Chrome Web Store (opens in a new tab)
Browser extensions analyze the rendered page and check it against WCAG. Because they run on the live DOM, they catch issues that static code scanners miss, including content changes driven by JavaScript.
