Privacy Policy
Core Commitment: TabStack does not collect, track, store remotely, or transmit any user data, web browsing history, or personal information. Everything operates 100% locally on your computer.
1. Overview and Single Purpose
TabStack is an open-source browser extension designed for Chromium-based browsers (Chrome, Brave, Arc, Edge). Its single purpose is to organize and cluster open tabs by domain into native collapsible tab groups and hibernate dormant background tabs to reclaim memory.
2. Data Collection and Usage
TabStack adheres to a strict zero-telemetry policy:
- No Personal Information: We do not ask for or collect names, email addresses, usernames, IP addresses, or device identifiers.
- No Web History Collection: Although TabStack inspects open tab URLs in local memory to group tabs by domain name (e.g.
github.com), this data is processed ephemerally in active memory and is never logged, stored as history, or sent to external servers. - No Telemetry or Analytics: TabStack contains zero analytics libraries, zero tracking pixels, and zero background network requests. It operates completely offline.
- No Remote Code: TabStack does not load or execute external scripts, remote CDNs, or dynamic code. All extension logic is fully contained within the installed package.
3. Chromium Permissions Justification
To perform its tab-management functions, TabStack requests the minimum necessary permissions:
| Permission | Technical Purpose |
|---|---|
tabs |
Allows reading tab URLs and active states to group matching domains and detect when background tabs should be discarded/hibernated. |
tabGroups |
Allows creating, naming, color-coding, expanding, and collapsing native browser tab groups. |
storage |
Allows persisting your local extension preferences (such as accordion mode toggles, hibernation timers, and custom group colors) inside your browser's local storage. |
alarms |
Allows scheduling lightweight periodic background timers to evaluate idle tab inactivity and trigger hibernation. |
4. Data Storage and Retention
All user configurations and preferences are stored exclusively on your local machine using Chromium's chrome.storage.local API. If you uninstall TabStack or clear your browser extension data, all local preferences are permanently removed.
5. Third-Party Sharing and Commercialization
TabStack does not sell, rent, monetize, or transfer any user data to third parties, advertising networks, data brokers, or search engines under any circumstances.
6. Open Source Transparency
TabStack is completely free, transparent, and open source under the MIT License. Anyone can audit the complete source code to independently verify our privacy guarantees on GitHub.
7. Contact & Changes
If you have any questions or feedback regarding this Privacy Policy, please open an issue on the official GitHub Repository.