Free tool
Check a page's HTML against WCAG rules.
Paste the HTML of a page you own. axe-core, the open-source rules engine, checks it in this browser tab against WCAG 2.0, 2.1 and 2.2 Level A and AA rules.
Paste your HTML
Your HTML stays in this browser tab. Nothing is uploaded or fetched. The page's scripts do not run, and its external stylesheets, images and fonts are not loaded.
Results by WCAG success criterion
What was checked
Your HTML as this browser rendered it, with scripts and external files blocked. It is shown for reference and cannot be clicked.
What the rules cannot tell you
Automated rules cannot judge whether alt text is accurate, whether the focus order makes sense, or whether a screen-reader user can finish checkout. Suretto runs those checks with assistive technology and keeps the evidence for each result.
The checker uses axe-core 4.10 by Deque Systems, under the Mozilla Public License 2.0. It is bundled with this site and runs in your browser.