Auditing, performance metrics, and best practices for Progressive Web Apps

Node.js tool for optimizing SVG files

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

GPU Accelerated JavaScript

Critical extracts & inlines critical-path (above-the-fold) CSS from HTML

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 framework for finding JavaScript memory leaks and analyzing heap snapshots

Simple, tiny and lightweight benchmarking library!

JavaScript library that predicts which files the client will need to fetch next by analyzing users' mouse movements and keyboard navigation.

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.