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Test. Optimize. Repeat!

Instantly test your site’s speed, usability, and resilience in real browsers, devices, and locations around the world.

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All of the WebPageTest features you already love, plus API Access & No-Code Experiments!

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Start a Visual Comparison or... Test!

Enter multiple URLs to compare them against each other visually.

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For each URL, 3 first-view tests will be run from 'Virginia USA - EC2 - 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.

Experiments are a game changer for quantifying the speed impact of performance optimizations. What took days of technical work is now just a few clicks. Not only will this save tons of time, it will let us test and iterate ideas to find the right mix of recommendations efficiently.
I’m blown away this exists, it feels like magic.

Todd Parker Partner, Filament Group

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.

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