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Comparison

A Pa11y alternative

Pa11y is a solid open-source accessibility CLI. This covers similar ground with a hosted scan, a shareable report, and a few extras. Here is how they compare.

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Similar goal, less setup

Pa11y is a free, open-source command-line tool that runs accessibility checks (via axe-core or HTML CodeSniffer) and is popular for scripting and CI. It is a good choice if you want a self-hosted CLI you fully control.

This scanner runs axe-core too, but as a hosted service: paste a URL and get a report, with nothing to install or configure. For teams that do not want to wire up and maintain a CLI, that is the main difference.

What you also get

  • A shareable report. A public link mapped to WCAG success criteria and conformance level, instead of raw terminal output, so non-developers can read it.
  • Exports. Download findings as JSON or Markdown, each with the selector, the failure, and a fix link.
  • Gradient contrast. Where text sits on a CSS gradient, this resolves the worst-case contrast to a real pass or fail.
  • CI without the wiring. A ready CLI and GitHub Action fail the build on new violations, plus an MCP server for AI agents.

If you love a scriptable, self-hosted CLI, Pa11y is great. If you want axe-core as a hosted scan with a shareable report and drop-in CI, this fits.

Same honesty about limits

Both tools run automated checks, which cover the machine-checkable subset of WCAG and not the whole standard. This scanner states that clearly and flags what still needs a human, so an automated pass is never sold as full compliance.

Frequently asked questions

Is this the same as Pa11y?

Both can run axe-core, so detection is comparable. Pa11y is a self-hosted CLI; this is a hosted scan with a shareable WCAG-mapped report, exports, gradient-contrast resolution, and a ready GitHub Action.

Is Pa11y free?

Yes, Pa11y is free and open source. Here, the single-page scan is free with no signup, and paid plans add multi-page audits and monitoring.

Can I use this in CI like Pa11y?

Yes. The CLI and GitHub Action run the scan in your pipeline and fail the build on new violations at or above a chosen severity, with no setup beyond adding the step.

Can I export the results?

Yes, as JSON or Markdown, each finding with the element selector, the exact failure, and a fix link.

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Last updated 2026-06-26.