Tool Shed · Accessibility
Check your page
Paste a resource's HTML, run an automated WCAG 2.2 AA accessibility check, and read the findings in plain language with the fix the engine suggests for each. It runs in your browser. Nothing is uploaded, nothing is stored.
What this can and cannot do
An automated check catches roughly a third to a half of accessibility issues, and occasionally flags something that is actually fine. It is a head start and a signal, never a pass or a gate.
It cannot tell whether your alt text means the right thing, whether the reading order is logical, or whether a keyboard trap hides in custom JavaScript. A person still finishes that, including the editor who reviews every submission. Pair it with the built-in checks in the submission flow and a real keyboard and screen-reader pass.
How this tool works
It runs locally. The check uses axe-core inside your browser. Your HTML never leaves the page, and nothing is uploaded or saved.
What it does. It renders what you paste into a sealed-off sandboxed frame, runs the automated rule set inside that frame, and maps each result to WCAG 2.2 AA.
How to read it. Findings are grouped Critical to Minor by how much they block someone. Each is an automated rule, a starting point, not a verdict.
What it misses. It cannot tell whether alt text means the right thing, whether the reading order is logical, or whether a keyboard trap hides in custom JavaScript. Pair it with a manual keyboard-and-screen-reader pass.
Paste the full HTML of your page, or the markup of one section. The check renders it in a sandboxed frame that is sealed off from this page, so the markup cannot reach or affect anything outside it.
Results
Your results will appear here
Paste a page above and run the check, or load the sample to see how findings are reported.
Then keep going
This clears the mechanical half. For the rest, the submission flow has more checks: alt text, heading order, link text, and plain language. Then tab through your page with the keyboard and confirm videos have captions.
When you are ready, head to "Share your work" to propose your resource. An editor reviews each submission before it goes live; peer review is optional.