Commons accessibility tool
Check your page
Paste your resource's HTML, run an automated accessibility check, and read the findings in plain language with the fixes the engine suggests. 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 rarely flags something that is actually fine. So it is a signal and a head start, never a pass or a gate.
It cannot judge whether your alt text means the right thing, whether the reading order is truly logical, or whether a keyboard trap hides in custom JavaScript. A person still finishes that, including the editor who reviews every submission. Pair this with the built-in checks in the submission flow and with a real keyboard and screen-reader pass.
The check only sees what actually renders here. Images and styles that do not load, like files on your own computer or relative paths, are not fully evaluated, so an image with a missing description may be skipped. The alt-text and link coaches in the submission flow read your markup directly, so they catch those even when nothing loads.
Paste the full HTML of your page, or the markup of one section. The check renders it in a sandboxed frame with scripts switched off, so the markup's own scripts never run.
Results
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.