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

SVG Optimizer for Node.js and CLI.

Scan and fix React performance issues

GPU Accelerated JavaScript

Extract & Inline Critical-path CSS in HTML pages

Essential metrics for a healthy site.

Calculate the real cost to run your JS app or lib to keep good performance. Show error in pull request if the cost exceeds the limit.

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

A framework for finding JavaScript memory leaks and analyzing heap snapshots

A simple, tiny and lightweight benchmarking library!

Lightweight JavaScript library that predicts user intent based on mouse movements and keyboard navigation. Perfect for smart prefetching. Also works for mobile!

Performance testing companion for React and React Native

hack into react internals

Context-aware web performance for everyone

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