WebPageTest Homepage WebPageTest, by Catchpoint Documentation

Welcome to WebPageTest

WebPageTest is a web performance tool providing deep diagnostic information about how a page performs under a variety of conditions.

Each test can be run from different locations around the world, on real browsers, over any number of customizable network conditions.

Get started →

Advanced Testing with Scripting

WebPageTest's scripting language enables everything from multi-step testing, request blocking and manipulation, custom headers and more.

Learn about WebPageTest scripts →

Capturing Custom Metrics

WebPagetest can execute arbitrary JavaScript at the end of a test, enabling a wide variety of custom defined metrics.

Learn about Custom Metrics →