# Privacy Policy for Chrome Statistic

> Last updated: September 9, 2026

This Privacy Policy explains how **Chrome Statistic** ("the Extension", "we", "us") handles information when you use our browser extension.

### 1. Our Core Privacy Principle: 100% On-Device & Offline
Chrome Statistic is built with a privacy-first architecture. **All data processing, analytics computation, and storage take place strictly on your local device.** 

We do not operate external tracking servers, cloud databases, or telemetry services. None of your browsing history or personal information is ever transmitted to us or any third party.

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### 2. Information We Process
To provide screen time metrics, productivity insights, and tab management, the Extension locally processes the following data:

- **Browsing Activity & URLs:** The domain names and page URLs of websites you visit, alongside the timestamp and duration of active engagement.
- **Tab & Window Focus:** State of the currently active browser tab and window to detect when you are actively using Chrome.
- **Idle Status:** Detection of system idle/lock events via the Chrome Idle API to pause screen time counting when you are away from your computer.
- **Open Tabs Metadata:** URLs, titles, and creation timestamps of currently open tabs to identify dormant "zombie tabs" for memory cleanup.

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### 3. How Information Is Stored
All statistical data is stored locally within your browser using the standard `chrome.storage.local` API:
- No data is transmitted to remote cloud servers.
- No data is shared with advertisers, data brokers, or third-party analytics providers (such as Google Analytics or Mixpanel).
- The Extension operates fully offline.

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### 4. Chrome Permissions & Purpose
The Extension requests the following permissions strictly for app functionality:
- **`tabs`**: Used to determine the active tab for time tracking and to close inactive tabs upon your manual request.
- **`storage` & `unlimitedStorage`**: Used to save your browsing metrics and preferences locally on your computer.
- **`idle`**: Used to pause the screen time tracker when your computer is locked or unattended.
- **`webNavigation`**: Used to detect internal page navigations on single-page applications (SPAs).
- **`history`**: Used solely to correlate past visit records and hourly patterns on your local machine.
- **`alarms`**: Used to periodically flush active screen time counters from memory to local storage.

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### 5. User Control, Data Export & Deletion
You maintain complete control over your data:
- **Export:** You can export your entire browsing history and analytics in JSON or CSV format at any time directly from the Dashboard.
- **Deletion:** You can reset or permanently delete all collected data at any time via the extension settings.
- **Uninstalling:** Removing the Extension from Chrome automatically wipes all locally stored databases managed by the extension.

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### 6. Third-Party Services
The Extension does not integrate any third-party advertising SDKs, tracking pixels, or external API endpoints.

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### 7. Children's Privacy
The Extension does not knowingly collect or solicit any personal information from children under the age of 13.

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### 8. Changes to This Privacy Policy
If we update this Privacy Policy, the revised version will be published with an updated revision date. Any architectural changes will continue to respect user privacy and on-device processing.

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### 9. Contact Us
If you have any questions or suggestions regarding this Privacy Policy, please reach out via GitHub or through the Chrome Web Store support tab.