A small (< 1kb) library for measuring things in your web app and reporting the results to Google Analytics.

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.

前端性能指标的监控,采集以及上报。用于测量第一个dom生成的时间(FP/FCP/LCP)、用户最早可操作时间（fid|tti）和组件的生命周期性能,，网络状况以及资源大小等等。向监控后台报告实际用户测量值。

Micro-library for gathering web page performance data

The isomorphic, simplest, and lightweight solution for User Timing API in Javascript - 🚀 only 208B 🚀. Tree-shaking and entry points built-in. Simple as that!

A Redux store enhancer which uses User Timing API to profile redux actions and time spent on notifying store listeners

User Timing middleware for Redux

Enhanced User Timing API