GoogleChromeLabs ORG

Make images smaller using best-in-class codecs, right in the browser.

A browser-based image compressor that shrinks photos and graphics locally on your device without uploading to a server, supporting multiple formats and quality settings.

Comlink makes WebWorkers enjoyable.

Tiny JavaScript library from Google Chrome Labs that makes web worker background threads as easy as calling regular functions, hiding complex message-passing behind simple async/await syntax.

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

A tiny JavaScript library from Google Chrome Labs that speeds up websites by silently loading pages in the background while the user reads, so clicks feel instant.

ndb is an improved debugging experience for Node.js, enabled by Chrome DevTools

ndb is a Node.js debugger from Google Chrome Labs that opens the Chrome DevTools interface for your programs, with extras like auto-attach to child processes and the ability to set breakpoints before any code loads.

Web rendering surface for Node applications

Carlo is a JavaScript library that lets Node.js apps show their UI inside a real Chrome browser window without bundling Chrome. The project is now archived and no longer maintained.

FireBug for designers › Edit any webpage, in any state https://a.nerdy.dev/gimme-visbug

[Deprecated] A node module to generate service worker code that will precache specific resources so they work offline.

Deliver experiences best suited to a user's device and network constraints

A collection of prototyped UI elements

[Deprecated] A collection of service worker tools for offlining runtime requests

🦔 A Webpack plugin to inline your critical CSS and lazy-load the rest.

Using a library in your webpack project? Here’s how to optimize it

PageSpeed Insights Reporting for Node

Bubblewrap is a Command Line Interface (CLI) that helps developers to create a Project for an Android application that launches an existing Progressive Web App (PWAs) using a Trusted Web Activity.

Run Lighthouse in CI, as a web service, using Docker. Pass/Fail GH pull requests.

Please use https://github.com/vuejs/preload-webpack-plugin instead.

JavaScript (engine) Version Updater

👩‍🏭 Adds native Web Worker bundling support to Webpack.

📰 Painless universal pre-rendering for Webpack.

A simple HTTP/2 server for development

Track compressed Webpack asset sizes over time.

File System Access API with legacy fallback in the browser

Clooney is an actor library for the web. Use workers without thinking about workers.

A game of proximity

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A custom element that allows you to easily put a Dark Mode 🌒 toggle or switch on your site:

PWACompat to bring Web App Manifest to older browsers

Service Worker Application Shell Architecture

A polyfill for CSS Container Queries

Helper classes and methods for implementing the idle-until-urgent pattern

Demos for different Houdini APIs

JSBI is a pure-JavaScript implementation of the official ECMAScript BigInt proposal.

A reference for the render impact of mutating CSS properties.

Literate code examples for common UI patterns.

tooling.report a quick way to determine the best build tool for your next web project, or if tooling migration is worth it, or how to adopt a tool's best practice into your existing configuration and code base.

PageLifecycle.js is a tiny JavaScript library that allows developers to easily observe Page Lifecycle API state changes cross browser

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CSS Custom Paint / Paint Worklet polyfill with special browser optimizations.

Web Audio API samples by Chrome Web Audio Team

🧮 Calculate the size and performance impact of switching to modern JavaScript syntax.

A small library to detect which features of WebAssembly are supported.

WordPress feature plugin to bring Progressive Web Apps (PWA) to Core

Webpack loader to offload modules to Worker threads seamlessly using Comlink.

A text editor for ChromeOS and Chrome

A Sample WordPress-based Progressive Web App

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A PWA directory, focusing on collecting PWA best practices and examples.

A list of community-built, third-party tools that can be used to improve page performance

A text editor build on the Native File System APIs

A sample that project Trusted Web Activities technology to wrap SVGOMG in an Android Application

Measure and report on your Web Vitals data in Google Analytics

Browser extension that allows for linking to arbitrary text fragments.

Puppeteer as a service

Buffer-backed objects in JavaScript.

A sample for the Cronet library

Samples and demos from the Progressive Rendering I/O talk

An adapter for enabling Rayon-based concurrency on the Web with WebAssembly.

webm-wasm lets you create webm videos in JavaScript via WebAssembly.

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A mini mobile web device lab

Examples of using the SameSite cookie attribute in a variety of language, libraries, and frameworks.

Air horn

A training project for learning Webpack optimizations

AutoWebPerf provides a flexible and scalable framework for running web performance audits with arbitrary audit tools including PageSpeedInsights, WebPageTest and more.

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This is a demo shell powered by WebAssembly, WASI, Asyncify and File System Access API.

Time-to-interactive polyfill

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"Shrine" Progressive Web App sample built with React

A fast, tiny polyfill for dynamic import() that works in all module-supporting browsers

Demo application for the Web Serial API.

Node's url module implemented using the built-in URL API.

Tool for testing the update flow for Chrome Extensions during development, including permission grants.

A progressive web app to read Stack Overflow content.

Demos for Adaptive Loading - differentially deliver fast, lighter experiences for users on slow networks & devices

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It’s like import(), but runs the module in a worker.

A CSS custom property helper based on PostCSS. Supply a pool of variables and this plugin will add them to the stylesheet as they are used.

Example e-commerce site to explore PWA (Progressive Web App) use cases.

A simple file drag and drop custom-element

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🔊 Polyfill AudioWorklet using the legacy ScriptProcessor API.

A TypeScript implementation of the Android Debug Bridge(ADB) protocol over WebUSB

Track mouse/touch/pointer events for a given element.

MediaStream ImageCapture polyfill. Take photos from the browser as easy as .takePhoto().then(processPhoto)

🤖 Compare your base branch to a pull request and run plugins over it to view differences

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Discoveries on Sustainable Loading research

Implementation of WebDriver BiDi for Chromium

passkeys-demo is a demo web application developers can have a look and try themselves to learn how to develop a similar experience.

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A community-driven gathering place for CSS Houdini worklets and resources.

Running gPhoto2 to control DSLR cameras over USB on the Web

Collection of demos from the CSS and Web UI Chrome DevRel team.

Tracking framework performance and usage at scale

A polyfill for self.scheduler

A polyfill for the kv-storage built-in module.

Smart Card Connector App for Chrome OS

Standalone Asyncify helper for Binaryen

Drop-in HTTP2 push on App Engine

Privacy Sandbox Analysis Chrome Extension and CLI for analysis and understanding of cookie usage on web pages, and new privacy-preserving Chrome APIs

A sample currency conversion Progressive Web App

Firehose of team++ resources

A library that provides best practices for loading popular third-parties

Benchmark comparing JSON.parse vs. equivalent JavaScript literals across JavaScript engines.

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Google Sign-In for Websites sample code.

The Rowing Monitor is a Progressive Web App that uses Web Bluetooth to connect to a PM5 Monitor and track exercises.

Proposal to integrate basic XML Sitemaps in WordPress Core

Google Performance Tools runner using Puppeteer

A node module that helps using browsers with selenium

WordPress development environment for core, plugins, and themes, based on Lando.

Source for CSS Wrapped 2024

A Hacker News client written in Go

A rotating, touch-sensitive knob web component that you can use like an <input type="range">.

A polyfill for IntersectionObserver

Determine the origin of where things come from in WordPress whether slow code, inefficient queries, or bad markup.

A non-visual polyfill for Same-Document View Transitions

🐈 Progressive Web App demo that showcases flaky network resilience measures (📶 or 🚫📶).

A Webpack plugin for generating Web Bundles output.

Some tests for comparing performance between bundling and unbundling JS

Up-to-date listing of Google Chrome's latest versions across stable, beta, dev and canary

*** DEPRECATED *** SMB support is now built into Chrome OS since 71. See README for more info.

A service worker implementation of the behavior defined in a page's AppCache manifest.

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Compile JSBI code that works in today’s environments to native BigInt code.

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Prototype for an <app-drawer> built-in module

A set of helper files used to test Propel and sw-toolbox.

This snippet illustrates how to reconstruct the legacy navigator.userAgent string value from the modern navigator.userAgentData values.

Project Fugu API Showcase

Designcember—A celebration of web design brought to you by web.dev.

Helper extension for admins to configure SAML SSO for Chrome apps.

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A Progressive Web App (PWA) that supports drag-and-drop file decompression into a user's directory

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CSS Selector Benchmarks, using PerfTestRunner and Puppeteer

https://codelabs.developers.google.com/your-first-webgpu-app

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Llaminator is an installable, fully offline-enabled PWA that helps you conveniently store and easily access images directly from your browser, desktop, or home screen.

A test app to determine what Project Fugu 🐡 APIs your browser supports.

Create healthy diverting doodles!

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Demostrates usage of the Web Smart Card API.

This SDK allows web-based apps/pages to interact with dictation devices

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Language support for Chromium's Mojom IDL

Project Sesame is an open-source demo web application built with node.js, designed to provide a hands-on environment for web developers to explore, experiment and learn a wide range of identity and authentication features and patterns.

TypeScript types conforming to the WebDriver BiDi specification

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Tools to analyze trends in HTTP Archive's Lighthouse data

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A CLI tool to analyze feature specs and generate the required web platform tests

Demos for identity on the web. Built by the Chrome Developer Relations team and friends.

A Game of Thrones app built with Angular

A simple Chrome Extension to demonstrate the Camera Pan Tilt Zoom Web API.

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A Symfony bundle providing web security features in the form of COOP, COEP, Fetch Metadata and Trusted types

Web Platform Documentation middlezone prior to it landing on MDN

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A demonstration of using the Web Serial API to connect to a AIS receiver.

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Issue tracker for CDS Adventure!

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A little web app to demonstrate dynamic manifests creating a "Single Serving Site".

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Toy test site for accessibility tools

ChromeDriver Log Viewer

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This repo provides code to demonstrate Private State Token using BoringSSL to create an issuance service.

A template repository with a collection of ChromeDriver regression test templates for different operating system and technology combinations.

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