Make Chrome more powerful by customizing the browser to your needs.
Start building Publish to the Web Store
Featured
Get started
Latest
See all

Extend the web

Learn why Extensions are so powerful and how you can customize Chrome's browsing to your needs.
Learn more
Explore a variety of ways to add interactions to your extension.
Explore ways to customize and react to the browser.
Explore ways to change and modify web pages.

Extensions on YouTube

Insights and news from the Extensions ecosystem.
Discover how you can build a game in the browser.
Watch on YouTube
Learn about the experimental new extensions menu.
Watch on YouTube
Learn how Chrome extensions empower you to customize your browser and boost your productivity.
Watch on YouTube

Extensions in action

Load these sample extensions on your local computer.
See all samples
This sample demonstrates the use of the Action API which changes the icon, icon badge, hover text or popup page depending on the user's choice or action.
Go to sample
A user script can be created by users or downloaded from a script repository. This sample allows you to inject files and arbitrary code added in an options page.
Go to sample
This sample demonstrates how you can inject JavaScript into web pages using the Scripting API.
Go to sample
This sample demonstrates how to create a side panel that opens when the user clicks a button on a page or opens a context menu.
Go to sample

Documentation

Everything you need to know about Chrome Extensions.
Build your first extension.
Learn more
Learn how Chrome Extensions work and what they can do.
Learn more
Learn to solve specific use cases in Chrome Extensions.
Learn more
Reference documentation for Extensions APIs, manifest keys, and permissions.
Learn more

Extensions posts

Read the most recent Chrome Extensions blog posts

Support and feedback

Get help developing your extension, and help us make Chrome Extensions better.
Get answers to questions not covered by the documentation.
Report extension bugs or problems with documentation.
Submit a request for a feature that you believe could improve the extension platform.
Check whether a bug or feature request has already been reported.
Find resources on how to upgrade an extension from Manifest V2 to Manifest V3, the newest version of the Chrome Extensions platform.