Privacy Policy

Too Many Tabs Optimizer (TMT Optimizer) — Last updated: April 29, 2026

Summary

Too Many Tabs Optimizer does not collect, transmit, store remotely, sell, or share any user data. All information stays on your device in Chrome’s local storage.

Data Storage

The extension stores the following data locally:

Data	Purpose	Stored Where
Settings & preferences	Remember your timer intervals, toggles, and feature configuration	Local device only
Tab activity metadata	Track when each tab was last used to calculate a usage score for sorting and cleanup	Local device only
Whitelisted domains	Exclude specific domains from automatic cleanup	Local device only
Thumbnail screenshots	Capture a preview image of tabs before suspension	Local device only
Error log	Store recent internal errors for debugging (capped at 20 entries)	Local device only

No data is synced to any cloud service.

Data Collection

This extension collects zero personal data. Specifically:

• No browsing history is collected or transmitted.
• No page content is read or stored (except detection of unsaved form input, which is a boolean flag only).
• No analytics, telemetry, or usage tracking of any kind.
• No cookies, fingerprinting, or cross-site tracking.
• No external network requests are made by the extension.
• No account, registration, or sign-in is required.

Permissions Justification

Permission	Why It Is Needed
tabs	Read tab state (URL, title, active status) to track activity and perform sort, group, suspend, and close operations.
storage	Persist settings, tab activity data, whitelisted domains, and thumbnail screenshots locally.
alarms	Schedule periodic lifecycle checks for suspend, close, and organize timers.
activeTab	Capture a visible tab screenshot before suspension to generate a thumbnail preview.
tabGroups	Create and manage native Chrome tab groups when organizing tabs by domain.
scripting	Inject a lightweight content script to detect unsaved form input on web pages.
Host permissions (http, https)	Required for the content script (unsaved input detection) and for capturing tab screenshots on all websites.

Third-Party Services

This extension does not use any third-party services, SDKs, libraries, or APIs. It is built entirely with vanilla JavaScript and Chrome extension APIs.

Data Retention

All data is retained locally until you uninstall the extension or clear Chrome’s extension storage. Tab activity records for closed tabs are pruned automatically. Thumbnail storage is capped at 30 entries.

Children’s Privacy

This extension does not knowingly collect any information from anyone, including children under 13.

Changes to This Policy

If this privacy policy is updated, the changes will be reflected on this page with a revised “Last updated” date.

Contact

For questions about this privacy policy: [email protected]