Pa11y
Pa11y automates accessibility testing to help teams evaluate websites.
About Pa11y
Pa11y provides tools that load web pages and highlight accessibility issues. It includes a command-line interface for one-off checks, a CI-oriented tool for checking a list of pages, a dashboard that tests pages daily with graphs to track changes over time, and a JSON-based webservice that supplies the dashboard data for reuse.
Key features
- Command-line interface loads pages and highlights accessibility issues
- Run one-off tests against individual web pages
- Dashboard automatically tests pages daily and tracks changes
- JSON-based webservice for custom front ends or data reuse
- CI tool iterates over a list of web pages
Best for: Designers and developers who need to check web pages for accessibility issues, including non-developers tracking site performance.
Good for
- Covers one-off checks, daily monitoring, and CI workflows
- Dashboard graphs track improvements and regressions over time
- Webservice allows reuse of test data in custom tools
Pa11y at a glance
- Website
- pa11y.org
- Category
- Development › Developer Tools
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Good for
- Designers, Developers
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Developer Tools
Pa11y alternatives
Tools and sites you could use instead, ranked by how closely they match.
Evaluate web content accessibility with WAVE, a suite of tools that identifies accessibility issues.
Webhook.site creates URLs and email addresses for testing, inspecting, and automating incoming HTTP requests and messages.
Selenium automates browsers for testing and other web application workflows.
Playwright automates browser testing for web apps, scripts, and AI agents.
The Web Developer Checklist helps teams review best practices before launching a website.
Skyvern automates browser workflows across websites, including logins, form entry, and data extraction.
FreemiumOpen source
24 alternativesPopular in Developer Tools
Well-known listings from the same topic.
AppDevToolsappdevtools.comCommand Not Foundcommand-not-found.comTestFlighttestflight.apple.com/join/A8GwCnq8Sourcegraphabout.sourcegraph.comProject Wallaceprojectwallace.comCarbon Calculatorwebsitecarbon.com
Pa11y FAQ
When should I use the standard Pa11y command-line tool?
When you want to run a one-off test against a web page.
What does Pa11y Dashboard do?
It automatically tests web pages for accessibility issues daily, with graphs to track improvements and regressions over time.
What is Pa11y Webservice for?
It is the JSON-based service that backs Pa11y Dashboard, for building a custom front end or repurposing the data.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.