Top 50 web-performance open source projects

The modern web developer’s platform

A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the application on demand. Through "loaders", modules can be CommonJs, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ... and your custom stuff.

Web performance library for measuring all User-centric performance metrics

A modular library for collecting front-end performance metrics.

Load inner pages instantly, intelligently

Repository for webpack documentation and more!

A Chrome extension to measure essential metrics for a healthy site

Implement a live chat beacon in your React application without performance regressions.

Report Web Vitals to your API with one POST request per session.

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。

🖱 Preload Angular lazy-loaded routes on mouse over

KabarVirus.com: cepat (PageSpeed 100), ringan (10 KB)

Automating Web Performance testing with Puppeteer 🎪

🏇 A model driven framework for the evaluation web page performance

E2E test framework to check for performance regressions in Angular apps

Micro-library for gathering web page performance data

⚡️Faster subsequent page-loads by prefetching in-viewport links during idle time

Break down long tasks into smaller tasks, avoid blocking the main process.

Assassin is a decentralized database that uses background threads to kill slow JavaScript.

All that you need to create a great mobile web experience

Aurelia 2, a standards-based, front-end framework designed for high-performing, ambitious applications.

Performance Metrics for Web Browsers

DEPRECATED - use GoogleChrome/lighthouse-ci instead

🔮 Libraries & tools for enabling Machine Learning driven user-experiences on the web

⚡Metrics to help understand page speed and user experience

A lightweight Kotlin web framework for backend developers 🦆

Lazy load images using Intersection Observer, apply progressive rendering and css animations.

🔮 Demo application showing the integration of Guess.js with Next.js

Improved JPEG encoder.

Open source web performance

Fast webpages for all browsers.

Checking browser rendering performance regression

Making a Doughnut Progress Bar - research notes

APM, Application Performance Monitoring System

Automated image compression for efficiently distributing images on the web.

👨‍🏫 Mike & Steve's Progressive Web Fundamentals Course

Karma Framework for running performance tasks using Telemetry

Promise like module loader with automatic resolution of nested dependencies using XHR requests and localStorage caching to dynamically load modules, legacy JavaScript, CSS, text and bundles. Supports custom handler and plugins as well.

It's an open-source report template that guides web professionals thought steps to audit any website in terms of the page speed and technical SEO optimisation.

A blazing fast server side rendering & project optimiser cli tool using Parcel (POC/Experiment)

performance-budgets gives you a simple way to check and stay on top of performance

PerfLint is a tool to identify unexpected performance levels of a Website

Alef Component for Modern Web Apps.

A simple sitespeed.io lighthouse plugin to collect few performance metrics

The WordPress plugin for quicklink. ⚡️ Faster subsequent page-loads by prefetching in-viewport links during idle time.

Client-side JavaScript exception and tracing library for Apache SkyWalking APM.

The website of Guess.js

Sharp collection of tools for front-end development, created with performance in mind. 🗡

A drop-in toolbar to help visualize a website's performance.

A collection of awesome things regarding the Climate tech ecosystem.