Category Archives: webpagetest

Using the User Timing API to Record Custom Performance Metrics

We have always had some form of testing metric. Back in the day we used things like the window.onload event or something similar. Then we started getting more sophisticated with TTFB, FCP, etc. Finally, along came CWVs, which continue to grow and evolve. But sometimes you just need to measure something that isn’t covered by all of these. And that’s where the User Timing API comes in. Happy reading! Continue reading

Record a Performance in DevTools, then Replay it in WebPageTest

WebPageTest (WPT) recently released a Chrome Extension that allows you to record an experience in DevTools, export that experience, then add that export to WPT to run as a test. Happy testing! Continue reading

Add Scripts to Your WebPageTest Tests

Oh the heals of my “Getting to Know… WebPageTest” article, I present an add-on of sorts, showing how to add and use scripts to your tests. Happy scripting! Continue reading

Getting to Know… WebPageTest

The latest installment in my “Getting to Know…” series, where I “get to know” some tech and share resources, tips, tricks and notes that I collect along the way. This time around, let’s get to know… WebPageTest! Continue reading