Sitespeed.io is an open source tool that helps you monitor, analyze and optimize your website speed and performance, based on performance best practices advices from the coach and collecting browser metrics using the Navigation Timing API, User Timings and Visual Metrics (FirstVisualChange, SpeedIndex & LastVisualChange).

Clear Eyes. Full Hearts. Can’t Lose.

Performance Metrics for Web Browsers

displays the import size of the package you are importing inside the code editor

List of performance analysis, monitoring and optimization tools

⚡Metrics to help understand page speed and user experience

🔥 Javascript (TypeScript) library for building web user interfaces

Checking browser rendering performance regression

Curated resources that help you build lightning fast websites

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。

E2E test framework to check for performance regressions in Angular apps

Compare HAR files.

Perfromance budget plugin for Webpack (https://webpack.js.org/)

HTML5 Slide Deck Generator Tool Based on the PageSpeed Insights API

Notes about Android development patterns. #BuildBetterApps #PERFMATTERS

💯Google PageSpeed Insights score command line toolkit

Slides and demo for PerfJankie/BrowserPerf

Framework allows to perform frontend performance testing with sitespeed.io + webpagetest, view application/server metrics in real-time with Grafana.

🔀 RouteKit is a set of tools for generating efficient routers.

Nsk Google Developer Group webperf tools talk links, snippets and stuff

List of awesome articles and tutorials for a jank free app

Voronezh webperf tools talk links, snippets and stuff

Some CrUX bigQuery Queries

📉 The Settled Performance Tracking - using speedtracker.org

Notebooks, data, code and documentation because #perfmatters

Javascript performance optimization (P4 - FEND)

Making responsive and retina-ready images easy, lightweight and asynchronous.

Source code of my personal website!

Think Fast, First: Empowering Performance Culture