# Privacy Policy

**Last updated:** March 8, 2026

## Data Collection

Defog does not collect, transmit, or store any user data on external servers. All data remains on your device.

## What Is Stored

Defog stores the following data locally in your browser using `chrome.storage.local`:

- **Text mappings** — The pattern/label pairs you create (e.g. a UUID mapped to a name).
- **Enabled state** — Whether replacements are currently active or paused.
- **Theme preference** — Your chosen appearance setting (system, light, or dark).

This data never leaves your browser and is not accessible to the developer or any third party.

## Permissions

- **Storage** — Used to persist your mappings and preferences locally.
- **Content scripts (all URLs)** — Declared in the manifest to scan and replace text on webpages. No host permissions are requested. No data from the pages you visit is collected or transmitted.

## Third Parties

Defog does not use analytics, telemetry, tracking, or any third-party services. There are no network requests made by the extension.

## Open Source

The full source code is available at [github.com/ayoung19/defog-extension](https://github.com/ayoung19/defog-extension). You can audit exactly what the extension does.

## Contact

If you have questions about this policy, open an issue on the [GitHub repository](https://github.com/ayoung19/defog-extension/issues).