Custom fonts in a content script

Injects a badge rendered in a custom font into every web page you visit, with an options page that turns the custom font on and off.

Runs on Chrome, Edge, Firefox · Manifest V3 · Surfaces: content script, options page, background service worker · Styling: CSS · Level: beginner

Create this project

npx extension@latest create my-content-custom-font --template content-custom-font
cd my-content-custom-font
npm install
npm run dev