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Lightning-Fast Web Performance
Online CourseLearn to analyze performance, fix issues, and deliver fast websites from the start.Free! Start Course Now >>
Introducing Carbon Control Experimental
New in WebPageTest! Measure your site's carbon footprint and run No-Code Experiments to find ways to improve.
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All of the WebPageTest features you already love, plus API Access & No-Code Experiments!View Plans & Learn More >>
Test your user’s real experience with global locations, modern devices, and the latest browser versions.
Correlate your user’s visual experience to the technical measurements of your site.
Dive into the anatomy of your webpage with components like DNS, TCP, TLS, and more.
What's new on the WebPageTest Blog
Better Performance Testing Through the Power of Defaults
See how data supports the idea that we can influence a healthier approach to performance testing through our product decisions.