Developer Tools

Free Tools for Extension Developers

Everything you need to build, test, and market your Chrome extension.

Find Extension

Search any Chrome extension by ID or URL. Find removed or unlisted extensions from our archive.

Export all reviews for any extension to Excel, CSV, or JSON. Analyze sentiment and trends.

Generate all required icon sizes (16, 32, 48, 128px) from a single image. Perfect for extensions.

Automatically convert your Manifest V2 extension to V3 format. Handles permissions and APIs.

Create beautiful mockups for Chrome Web Store. Add frames, backgrounds, and text overlays.

Crop images to exact Chrome Web Store tile sizes (440x280, 1400x560). Quick and precise.

All tools are free to use. No signup required.