How to read a WebPageTest waterfall chart

A presentation at Web Directions Lazy Load by Matt Hobbs

WebPageTest is one of the most well known and important tools in the web performance community. It’s been actively developed by Pat Meenan since he worked at AOL in 2008. It has become the go to tool for both very simple to very advanced debugging of the web performance of a website. One of its most well known charts is the waterfall chart.


The following resources were mentioned during the presentation or are useful additional information.