Basic HTML accessibility checker
Paste a URL and we'll check the page's raw HTML for a handful of clear-cut accessibility problems. It's free, checks nothing you don't ask it to, and doesn't store the URL or the result. It also won't tell you a page is accessible — see why below.
Need checks on a rendered page, including JavaScript content?The main analyzer also offers an AI assistant to explain the findings.Try the free website analysis →Use the basic checker below for a quick check of raw HTML.
What this can't tell you
This checks the page's raw HTML only — it doesn't run JavaScript, so a page built with a framework like React or Vue may look almost empty to it even if the rendered page is fine (or vice versa). It also can't see:
- Colour contrast
- Keyboard focus visibility and keyboard traps
- Content added or changed by JavaScript after the page loads
- Video and audio captions or transcripts
- Whether the page is actually usable with a screen reader
Automated tools in general — this one included — catch an estimated 20–50% of real accessibility issues. A clean result here is not the same as an accessible page.