Textbook in PDF format

Start developing browser extensions immediately.
Skip the time reading outdated, unsupported documentation from multiple sources and get started with development immediately.
What you will learn:
Building a Content Script
Content scripts are powerful tools that live on a web page, have access to the DOM, and communicate with your extension.
Where to add features There are multiple areas in your browser extension to add code. Learn which one is best for what you need.
Create a Popup View A popup view is the most familiar way to interact with a browser extension. We will create one using both JS and Vue 3.
Extension Pages Did you know you can have a dedicated page to run your extension? We will make one. You can fit a whole app in this page if you wanted!
Adding Context Menus Want to allow your user to right click and interact with your extension? We've got you covered.
User Authentication Authenticating a user with your browser extension is challenging. I'll help you get this enabled.
Local Storage Set state, cache data, and interact with your browser's local storage with ease.
Using Environment Variables Such a simple way to add that extra developer experience when designing and building your browser extension.
Manifest V3 Use the latest and greatest Manifest V3 for your extensions. Supported by every browser!