Total Tracker Food and Weight does not collect, transmit, sell or share any personal data.

• No network access. The extension makes no network requests. It has no servers, no analytics, no advertising and no third-party code.
• Stored on your device. Everything you enter, including foods, meals, weigh-ins and settings, is kept in the extension's own storage in your browser on your device. It never leaves that device unless you export it.
• Backups are yours. When you choose "Export a backup file", the app saves a file to your device. What you do with that file is up to you. Importing a backup reads a file you choose; nothing is uploaded.
• Removing your data. "Delete everything" in Settings erases it. Uninstalling the extension also deletes all of its stored data.
• One permission. The extension asks only for "storage", which it needs to save your entries.

The extension's manifest declares that it collects no data, and Firefox shows this before you install it.