Extension.js provides a single workflow to create, develop, build, and preview cross-browser extensions. Build browser extensions for Chromium, Chrome, Edge, and Firefox.
Get started: Create a new extension with npx extension@latest create my-extension.
Read the docs: Learn the workflow, APIs, and core concepts.
Browse examples: Start from examples for common extension patterns.
You are visitor 01402503 — GeezerVison does not store the pages you look up. Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.