Example Chrome Extension - Extension environment details, tab and window dashboard

Example Chrome Extension - Modify extension toolbar icon button, context menu

Example Chrome Extension - Extension messaging demo

Example Chrome Extension - Devtools Traffic Monitor

Example Chrome Extension - Declarative net request

Example Chrome Extension

Open source browser extension with dozens of browsable demos. Zero NPM packages, one click install, 100% HTML/JS/CSS.

Building Browser Extensions by Matt Frisbie

☆☆☆☆☆

The ultimate
Chrome extension tutorial

Building Browser Extensions shows you how to build modern Chrome extensions in 2023 with in-depth examples and detailed tutorials.