chrome-extension-demo

This repository is a working example of how to build a Chrome extension—a small program that adds new features or changes how Chrome behaves. Instead of starting from scratch, you can look at the code here to see what a basic extension actually looks like and how the pieces fit together.

Chrome extensions let you do things like modify web pages when you visit them, add new buttons to your browser toolbar, or run tasks in the background. They're written mostly in JavaScript, which is the same language used to power interactive websites. The repository shows you a minimal, working version so you can understand the core concepts without getting lost in unnecessary complexity.

The code is based on a tutorial by Dan Shultz, but this version has corrections and clarifications added by the repo maintainer. If you've read that tutorial and got confused by some of the code examples, or if you just want a reference implementation you can actually run and experiment with, this repo gives you that starting point. You can clone it, modify it, and test it in your own Chrome browser to learn how extensions work.

This would be useful for anyone curious about browser extensions—whether you're a founder thinking about building a tool that sits in Chrome, a product manager understanding what's technically possible, or a beginner wanting to learn web development beyond just websites. Rather than reading documentation, you get to see real, working code that does something tangible.