Automated auditing, performance metrics, and best practices for the web.

Node.js tool for optimizing SVG files

Scan for React performance issues and eliminate slow renders in your app

The only Front-End Performance Checklist that runs faster than the others

GPU Accelerated JavaScript

Monkey patches React to notify you about avoidable re-renders.

Extract & Inline Critical-path CSS in HTML pages

JavaScript Performance Monitor

Essential metrics for a healthy site.

Calculate the real cost to run your JS app or lib to keep good performance....

A fast, interactive web-based viewer for performance profiles.

A benchmarking library. As used on jsPerf.com.

A framework for finding JavaScript memory leaks and analyzing heap snapshot...

A tool for finding memory leaks in web apps

Web performance library for measuring all performance vitals metrics

Benchmark tooling that loves you

A simple, tiny and lightweight benchmarking library!

Optimizes static websites for best user experience and best Core Web Vitals...

Lightweight JavaScript library that predicts user intent based on mouse mov...

Performance testing companion for React and React Native

High-resolution JavaScript timer based on performance.mark/measure (491 byt...

hack into react internals

Context-aware web performance for everyone

A library to inline your app's critical CSS and lazy-load the rest.

Browser-based JavaScript benchmarking tool.