Lesson 4
20 min

Project 2: A Tiny Chrome Extension

Quick Summary

A Chrome extension is a small web application with a manifest that requests browser capabilities. Its permissions and data access deserve careful review because it runs inside a person's browser.

What you will learn
  • ·Explain the basic files and execution model of a browser extension
  • ·Build a tiny extension with the minimum necessary permission
  • ·Test behavior, privacy, and failure states before distribution