Free Page Speed Test
Core Web Vitals from real Chrome users, a Lighthouse lab run on mobile and desktop, and a prioritized list of what to fix. No signup.
Real-user data
Largest Contentful Paint, Interaction to Next Paint and Cumulative Layout Shift at the 75th percentile from the Chrome UX Report, for the page and for the whole origin.
Lab diagnostics
A fresh Lighthouse run scores Performance, Accessibility, Best Practices and SEO, with a filmstrip of how the page paints.
What to fix first
Opportunities ranked by estimated time saved, plus diagnostics explaining why the page is slow.
Lab and field data are provided by Google's PageSpeed Insights API and the Chrome UX Report. Lighthouse is a trademark of Google LLC.