Documentation for Chrome extensions developers.

[Extensions - Chrome Developers](https://developer.chrome.com/docs/extensions/ )]

Getting started

Published on Friday, February 28, 2014 • Updated on Thursday, July 22, 2021

Table of contents

 

Extensions are made of different, but cohesive, components. Components can include background scripts, content scripts, an options page, UI elements and various logic files. Extension components are created with web development technologies: HTML, CSS, and JavaScript. An extension's components will depend on its functionality and may not require every option.

This tutorial will build an extension that allows the user to change the background color of the currently focused page. It will use many of the extension platform's components to give an introductory demonstration of their relationships.

To start, create a new directory to hold the extension's files.