# Dog Gatekeeper — Privacy Policy

_Last updated: April 28, 2026_

Dog Gatekeeper is a browser extension that helps you take breaks from social media by displaying a full-screen overlay when you've been on a supported site for longer than your chosen time limit.

This policy describes — in plain language — what data the extension touches and what it does with it.

## Short version

**Dog Gatekeeper does not collect, transmit, sell, or share any user data. Everything stays in your browser.**

## What the extension stores

The extension stores three values in your browser's local storage:

1. **Usage limit** — how many minutes you set before the break overlay appears (default: 60)
2. **Break duration** — how many minutes the break lasts (default: 5)
3. **Enabled flag** — whether the extension is currently active (default: on)

These values exist only on your device. They are never sent to any server. They are not shared between devices unless you've enabled Chrome sync, in which case Chrome itself (not Dog Gatekeeper) syncs them between your signed-in browsers.

## What the extension reads

The extension runs a content script on five domains: `x.com`, `twitter.com`, `instagram.com`, `tiktok.com`, and `youtube.com`. On those pages, it:

- Checks whether the tab is currently focused (`document.visibilityState`, `document.hasFocus()`) so it can count active time
- Injects a full-screen overlay element when your usage limit is reached

The extension does **not**:

- Read the content of any page (no posts, messages, profile info, search history)
- Track which specific pages you visit within those sites
- Communicate with any external server
- Use cookies, fingerprinting, or analytics
- Load remote code

## What the extension transmits

Nothing. The extension makes zero network requests. There is no backend.

## Permissions explained

- **`storage`** — to remember your three settings between browser sessions
- **Host access to the five social media domains** — required to inject the timer logic and the break overlay onto those pages

Both permissions are used solely for the extension's stated purpose of enforcing self-imposed time limits.

## Children's privacy

The extension does not knowingly collect any data from anyone, including children. There is no data collection at all.

## Changes to this policy

If the extension's behavior ever changes in a way that affects this policy, this document will be updated and the extension's version number will be incremented.

## Contact

For questions or issues about Dog Gatekeeper or this privacy policy, please open an issue on the GitHub repository or contact the developer through the Chrome Web Store listing's support tab.