Test. Optimize. Repeat.

Enter multiple URLs to compare them against each other visually.


    For each URL, 3 first-view tests will be run from 'Europe - Linux (Paris) - Chrome' and the median run will be used for comparison. If you would like to test with different settings, submit your tests individually from the main test page.

Real Experience

Test your user’s real experience with global locations, modern devices, and the latest browser versions.

Video Capture

Correlate your user’s visual experience to the technical measurements of your site.

In-Depth Metrics

Dive into the anatomy of your webpage with components like DNS, TCP, TLS, and more.

“The best professional web performance investigators I know use WPT as a critical part of their workflows, and it's the center of mine.”

Alex Russell, Software Engineer, Google Chrome

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