Lighthouse vs Pa11y
Compare Lighthouse and Pa11y on the same questions, with pricing terms and sources shown where they are known.
Lighthouse
Automate web performance, accessibility, SEO, and best practice audits for any web page — public or authenticated.
View LighthousePa11y
Free, open source accessibility testing tools for developers and designers to identify and fix web accessibility issues
View Pa11yComparison table
Unknown means no reliable value is stored, not that a feature is missing.
| Question | Lighthouse | Pa11y |
|---|---|---|
| Pricing modelSame for both | Free | Free |
| Free planSame for both | Yes | Yes |
| PlatformsDiffers | Linux, macOS, Web, Windows | Web |
| Listed featuresDiffers |
|
|
Pricing and limits
Plans can differ in scope, region and billing terms, so compare plan names rather than assuming equivalence.
Lighthouse
Free plan: Yes
Subscriptions
- Listed price: Free
Pricing verification date unknown.
Pa11y
Free plan: Yes
Subscriptions
- Listed price: Free
Pricing verification date unknown. A check was attempted on Sep 22, 2026 but no value was found; that does not verify the prices.