Message Thread Cleaner

Message Thread Cleaner is a Manifest V3 Chrome extension that deletes chat threads from the signed-in user's own Facebook Messenger inbox. It runs only on supported Messenger pages and only after the user explicitly starts a run.

Local testing

1. Open chrome://extensions.
2. Enable Developer mode.
3. Choose Load unpacked.
4. Select the extension directory.
5. Open https://www.facebook.com/messages/ or https://www.messenger.com/.
6. Open the extension, choose a run limit, acknowledge the warning, and start.

Deletion is permanent. Use a test account or disposable test conversation when validating a release.

Build the upload package

Run:

./scripts/package-extension.sh

The script validates the manifest and JavaScript, checks required assets, and creates dist/message-thread-cleaner-1.2.0.zip.

Store submission

Copy the prepared text from store-listing/ into the Chrome Web Store Developer Dashboard. Before submitting, replace the support-contact placeholder and publish store-listing/PRIVACY_POLICY.md at a public HTTPS URL you control.

This project is independent and is not affiliated with, endorsed by, or sponsored by Meta Platforms, Inc.