Privacy Policy — Lazy Tabs (Tab Suspender)

Last updated: March 2026

Overview

Lazy Tabs is a browser extension that suspends inactive tabs to save memory. We are committed to protecting your privacy. This policy explains what data the extension accesses and how it is used.

Data Collection

Lazy Tabs does not collect, transmit, or share any personal data. The extension operates entirely within your browser. No data is sent to any external server, analytics service, or third party.

Activity Detection

By default, Lazy Tabs relies solely on browser tab-switch events (tabs.onActivated) to detect when you leave a tab. No content scripts are injected into pages, and no page content is accessed.

If the user enables "Suspend active tab" in settings, a lightweight content script is injected to detect mouse movements, clicks, and scrolling. Keyboard input is never tracked. The extension has zero keydown, keyup, or keypress event listeners. Your passwords, form inputs, and typed content are never accessible to the extension.

Data Storage

All data is stored locally in your browser using the browser's built-in extension storage APIs:

• Settings (timeout duration, toggle preferences, theme choice) — stored in local storage
• Never Suspend list (domains and URLs you've excluded) — stored encrypted (AES-256-GCM) in local storage
• Tab activity timestamps — stored in session storage, cleared when the browser closes
• Custom background image — stored as a base64 data URL in local storage

No data is stored on any external server.

Permissions

The extension requests the following permissions, each used exclusively for its core functionality:

| Permission | Purpose |
|---|---|
| tabs | Detect tab switches, read tab URLs/titles, and navigate tabs for suspend/restore |
| storage | Store settings, exclusion list, and theme preferences locally in the browser |
| alarms | Schedule periodic checks for tabs that should be suspended |

The extension does not request activeTab, webRequest, cookies, history, or any other sensitive permissions.

Encryption

Your Never Suspend list is always stored encrypted using AES-256-GCM. By default, an automatic key is used. If you set a master password, the key is derived from your password using PBKDF2 with 100,000 iterations. Your password is never stored — only a hash is kept for verification.

Third-Party Services

Lazy Tabs does not use any third-party services, APIs, analytics, or tracking tools.

Changes to This Policy

If we make changes to this privacy policy, we will update the "Last updated" date above. Continued use of the extension after changes constitutes acceptance of the updated policy.

Contact

If you have questions about this privacy policy, please use the support or feedback options available on the extension's listing page in the Chrome Web Store or Firefox Add-ons marketplace.