MV2 to MV3 Converter
Automatically convert your Chrome extension manifest from Manifest V2 to Manifest V3. Fast, free, and easy to use.
Read the official migration guideUpload Manifest V2
Click or drag and drop
manifest.json file
Converted Manifest (V3)
Upload a manifest.json file to see the conversion
Key Changes in Manifest V3
Background Scripts → Service Workers
Background scripts are replaced with service workers, which are event-driven and non-persistent.
Unified Action API
browser_action and page_action are merged into a single action API.
Host Permissions
Host permissions are separated from regular permissions for better security and user control.
Web Accessible Resources
Resources must specify which sites can access them for improved security.
All processing happens in your browser. Your manifest files are never uploaded to any server.