axe-core vs Pa11y
No leader: the top candidate axe-core has only 0.32 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for accessibility testing. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
axe-core
An open-source JavaScript testing framework that analyzes websites and HTML-based interfaces to identify accessibility violations and compliance issues. It integrates into existing test environments and returns detailed violation reports in JSON format.
Pa11y
A suite of free and open-source tools for identifying and tracking accessibility issues on websites. Provides both automated testing via a web dashboard and command-line utilities for developers.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
axe-core
- VS Code (axe-linter extension)
- npm/pnpm (package manager)
- GitHub Actions
- Puppeteer
- Selenium
- Jest
- Testing frameworks
Pa11y
Not documented yet.
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.