Does this tool store my manifest data?

No, this tool processes everything locally in your browser using JavaScript. No data is sent to our servers.

Manifest V2 to V3 Converter

Q: Why do I need to convert Manifest V2 to V3?

Google Chrome is deprecating Manifest V2. All extensions must be migrated to Manifest V3 to continue working in the Chrome Web Store.

Upload, Convert, and Download your updated Extension Manifest

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V2 JSON Input Upload JSON

Invalid JSON format. Please check your syntax.

V3 JSON Output

Frequently Asked Questions

Why do I need to convert Manifest V2 to V3?

Google Chrome is officially deprecating Manifest V2. All extensions must be migrated to Manifest V3 to continue being listed in the Chrome Web Store and to remain functional in newer browser updates. Manifest V3 brings enhanced security, privacy, and performance improvements.

Is my manifest data safe and secure?

Yes! This tool is completely client-side. Your JSON data is processed entirely within your browser using JavaScript. We do not store, track, or send your manifest data to any external servers.

What major changes does this tool make?

The tool automatically updates the manifest_version to 3, combines browser_action and page_action into a unified action API, converts background script arrays into a single Service Worker, extracts host permissions into host_permissions, and reformats the web_accessible_resources array.