Performance-Bookmarklet helps to analyze the current page through the Resource Timing API, Navigation Timing API and User-Timing - requests by type, domain, load times, marks and more. Sort of a light live WebPageTest.
Option to persist a subset of metrics.
#9 added select box to resource waterfall chart to allow filtering of resource by domain
firefox (dev release) mark bugfix
#20 fixed Waterfall code refactor Resource waterfall shows domContentLoaded and onLoad event in BG to make it easier to see how resources load.
Feature: "Duration Parallel" in Requests by Domain, showing the actual time a domain was downloading reflecting parallelism. Internal: Mayor refactoring for modularity Porting code to ES6 and using a transpiler (babel) to convert it back to ES5
Resource Filetype/Initiator table
Fixed usage on browser internal sites