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Web Tracing Framework

Build Status Selenium Test Status

The Web Tracing Framework is a set of libraries, tools, and visualizers for the tracing and investigation of complex web applications. You spend a small amount of time instrumenting your code and it helps you discover performance problems, track regressions, and build buttery-smooth 60fps web apps.

This is still very much a work in progress, and not yet ready for general consumption. Once ready, much of the functionality will be available via browser extensions and embeddable minified js files, but for now they aren't going to be published.


See building for a quickstart, and testing for information on running the various tests.


All code except dependencies under third_party/ is licensed under the permissive BSD license. Feel free to fork/rip/etc and use as you wish!


Have a fix or feature? Submit a pull request - we love them! Note that we do keep to the style_guide, so please check it out first!

As this is a Google project, you must first e-sign the Google Contributor License Agreement before we can accept any code. It takes only a second and basically just says you won't sue us or claim copyright of your submitted code.