This document discusses Firefox Test Engineering's goals around web performance testing. It aims to help support performance efforts on Firefox properties like Firefox Accounts and Add-Ons Manager. It also wants to spark discussions around performance across teams and surface issues. The document outlines using WebPageTest and related tools like Jenkins and Docker for synthetic web performance measurements, head-to-head browser comparisons, feature-specific tests, and dataset for regression testing. It provides examples testing Reddit loading in Chrome vs Firefox and measuring a site with private browsing and tracking protection enabled in Firefox.