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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 Lighthouse Test!

Run Lighthouse on an emulated mobile device on a 3G network. Running the test will give you the top level scores for all the categories Lighthouse runs on, as well as individual level reports.