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 →Community & Open Source
We actively work on advancing web performance tools for the benefit of the community.
GitHub Image Actions
Automatically compress images in your Pull Requests.
React Live Chat Loader
Fix the performance impact of live chat widgets in React apps.
Calibre CLI
Access and automate your Calibre speed monitoring data.
Google Lighthouse
We contribute to Lighthouse, the engine behind our monitoring.
Chrome HAR
We maintain and improve Chrome HAR for creating HAR files.