Welcome to Extensy
Extensy lets you build, customize, and publish Chrome extensions using plain-English prompts. Describe what you want your extension to do, and Extensy generates fully compliant Manifest V3 code — ready to load in your browser or submit to the Chrome Web Store.Quick Start
Build and load your first extension in under 5 minutes.
AI Assistant
Ask our specialized assistant any question about extension development.
Prompting Guide
Learn how to write prompts that generate great extensions.
Publishing Guide
Submit your extension to the Chrome Web Store step by step.
How Extensy works
1
Describe your extension
Type a prompt in plain English describing what your extension should do — the action, the target website, and any UI details.
2
Extensy generates the code
Our AI produces a complete, Manifest V3-compliant extension:
manifest.json, content scripts, background service worker, and popup UI.3
Download and load
Export a ready-to-use ZIP, unzip it, and load it directly in Chrome via
chrome://extensions.4
Iterate and publish
Refine with follow-up prompts, then publish your finished extension to the Chrome Web Store.
Why Extensy
MV3 by Default
Every extension Extensy generates follows Manifest V3 — Chrome’s current, secure standard.
One-Click Export
Download a store-ready ZIP with all files packaged and validated.
Instant Debugging
Context-aware troubleshooting for common permission and loading errors.
Join the community
Discord Community
Connect with hundreds of extension developers and get help from the Extensy team.