Speed Tools
Free Web Performance Tools
Test, audit and compare website performance with our free speed tools.
Website Speed Test
Run a Lighthouse performance audit from multiple global locations and device types, completely free.
Test your site →
Core Web Vitals Test
Check whether your site passes Google’s Core Web Vitals assessment using real-world Chrome UX Report data.
Check Core Web Vitals →Website Speed Leaderboard
See how the world's top websites perform, compared by industry. Updated monthly.
View leaderboards →Speed Comparison
Compare up to 5 websites by Core Web Vitals performance, ranked and scored side by side.
Compare sites →Community & Open Source
We actively work on advancing web performance tools for the benefit of the community.
Get data. Find problems. Fix them.
Real User Monitoring
See how every visitor experiences your site. Element-level attribution pinpoints exactly which images, scripts and interactions cause slow loads.
Learn about Real User Monitoring →
CrUX Monitoring
Track the exact Core Web Vitals data Google uses for search rankings. Always fresh, with historical trends for every metric.
Learn about CrUX Monitoring →
Synthetic Monitoring
Scheduled Lighthouse tests from 17 global locations. Catch regressions before your users do.
Learn about Synthetic Testing →Fast website, happy customers
See it? Fix it. Start improving UX & performance today.
