Invoset · WCAG Accessibility Checker

Check any open tab for WCAG 2.1 AA issues, plus WCAG 2.2 target size. Powered by axe-core; results stay on your device.

Invoset checks the page you are currently viewing for WCAG 2.1 AA accessibility issues, plus the WCAG 2.2 target size rule, and shows the result in a clean popup in about five to ten seconds. It is built on axe-core, the open-source accessibility rule engine that Microsoft, Google, and Deque ship in their own products. The check runs entirely on your device. Nothing about the page you scan is sent to a server, and no account is required. Because it runs in your browser, it can also check pages you are signed in to, such as account or checkout pages that an online scanner cannot reach. WHAT YOU GET - An overall score from 0 to 100 - Issue counts grouped by impact: critical, serious, moderate, minor - The top violations with the rule id, the WCAG success criterion, and a short description of what failed - WCAG 2.2 findings labeled separately, so you can tell them apart from the WCAG 2.1 AA baseline - A clear "nothing to flag" state when a page passes the automated checks HOW IT WORKS 1. Open any http or https page. 2. Click the Invoset icon in your toolbar. 3. Press "Scan this page". 4. Read the scored result in the popup. The check only runs when you click. The extension never reads pages in the background and never tracks your browsing. WHAT IT IS NOT Automated testing catches a large share of accessibility problems, but not all of them. Issues like keyboard focus order, meaningful alt text, and reading flow still need human judgement. Of the six new WCAG 2.2 criteria at Level A and AA, only target size can be tested automatically. Treat the score as a fast signal, not a certificate, and pair it with manual review for anything legal or contractual. ABOUT INVOSET Invoset is a continuous WCAG monitoring service for small businesses in the United States. The website version re-scans your whole site every week or month, tracks changes over time, and produces an audit-trail report. This extension is the free, single-page version of that engine. Learn more at https://invoset.com