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Welcome

Are you new to web development, or an old pro? We've got resources for both. These codelabs provide a guided, tutorial, hands-on coding experience. Most codelabs will step you through the process of building a small application, or adding a new feature to an existing application. Find more codelabs on codelabs.developers.google.com
In this codelab, you'll build a Progressive Web App, which loads quickly, even on flaky networks, has an icon on the homescreen, and loads as a top-level, full screen experience.
In this codelab, you'll build a web page that interacts with a micro:bit board to show different images on its 5x5 LED display. You'll learn about Web Serial, and how to use Readable, Writeable, and Transform Streams to communicate with serial devices in the browser.
Learn how to integrate a service worker into an existing application to make the application work offline.
In this codelab, you will learn how to enable push messaging and notifications for web apps and sites.
This codelab will help you learn to identify and fix web app performance bottlenecks.
The web is accessible on a huge range of devices, from small-screen phones to big-screen televisions. Each device presents its own benefits and constraints. As a web developer, you are expected to support a full ranges of devices.
In this codelab, you will learn how to implement Payment Request API onto an existing e-commerce website.