The Best of Velocity - Understanding and Optimizing Web Performance Metrics
Date: This event took place live on September 04 2012
Presented by: Bryan McQuade
Duration: Approximately 100 minutes.
Questions? Please send email to
There are many different web performance metrics, including onload, time to first byte, above the fold time, DOMContentLoaded, and time to first interaction, among others. In this talk we will explore the factors that influence each of these metrics, and look at the performance best practices that can be implemented to improve them. We will also look at how each metric correlates with user-perceived latency. We will finish by doing a deep dive analysis for these metrics for a set of example web pages.
About Bryan McQuade
During Bryan's time at Google, he has contributed to various projects that make the web faster, including Shared Dictionary Compression over HTTP, optimizing web servers to better utilize HTTP, and most recently, the Page Speed web performance tool. Prior to working on web performance, Bryan was the first full time engineer on the Google TV Ads team, where he helped to build some of Google's TV ad auction and video management systems.