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Cookie Policy

Last updated: June 15, 2026

What Are Cookies

Cookies are small text records placed on your machine when you interact with websites. Modern web applications also use equivalent local storage, session storage, and database indexes (such as IndexedDB) to preserve application state.

TabSlate relies on these client-side storage technologies to handle account authentication, remember user preferences, and execute high-speed local data manipulation inside your browser extension.

How We Use Cookies

TabSlate utilizes client-side storage for functional, security, and anonymous analytics operations. We do not place cookies or tracking storage for advertisement, behavioral profiling, or tracking your actions across the broader web. Specifically, we use these technologies to:

  • Validate your identity and maintain your logged-in state across active browser tabs.
  • Save your selected preferences, such as light/dark interface themes, active workspaces, and visual layouts.
  • Keep local, lightning-fast databases of your collections, tab groups, and bookmarks within the extension's sandbox.
  • Prevent brute-force account registration and verify bot-prevention captchas.
  • Collect anonymous, aggregate usage metrics to understand which features are used and guide product improvements. No personal information or browsing content is included in these measurements.

Types of Cookies We Use

We employ the following storage models across our Service:

1. Session Cookies & Storage: We store your JWT accessToken in chrome.storage.session. This is a highly secure context isolated from ordinary web page scripts. It is automatically destroyed the moment your browser session ends.

2. Local Storage (Zustand Persist): We persist long-term settings, including your user profile, refresh tokens, active workspace selection, custom search engines, and synchronization sequences (localSeq), in chrome.storage.local. This prevents you from having to log in every time you restart your browser.

In addition, a randomly generated anonymous identifier (tabslate-analytics-id) is stored in chrome.storage.local on first use. This identifier is used solely to associate anonymous usage events for aggregate analytics. It contains no personal information and is not linked to your account in any way.

3. IndexedDB (tabslate-db v2): We use high-performance IndexedDB databases to cache your active tabs, collections, bookmarks, and tag structures. This guarantees instant UI response times and permits fully offline tab organization.

Third-Party Cookies

We work hard to minimize external dependencies. Third-party storage is strictly limited to:

  • Prosopo Captcha Widget: When resolving a conditional registration or login challenge, the widget iframe loads captcha tokens to prevent automated spam. Prosopo sets temporary cookies to validate the puzzle solution.
  • Billing Portal (Flexprice): If you access the customer billing center, temporary functional cookies are used to securely manage checkout sessions and verify payment data. Flexprice is a third-party billing provider; checkout sessions are handled through the Flexprice platform.
  • Analytics Platform (OpenPanel, self-hosted): When analytics are enabled, the extension sends anonymous usage events to our self-hosted OpenPanel instance. These events contain only an anonymous session identifier and an event name — no personal data, account credentials, browsing URLs, or tab content are transmitted. Our OpenPanel instance is operated solely by TabSlate and does not share data with any third party.

Managing Cookies

You possess full control over client-side storage. You can delete local databases and session keys at any time by signing out of the TabSlate extension, which automatically clears all local tokens and IndexedDB tables from your browser.

You can also block or clear cookies via your browser's Privacy & Security settings panel. However, please note that blocking essential session storage will prevent you from utilizing our cloud synchronisation services.

Contact Us

If you have questions or concerns regarding our use of cookies and local storage systems, please contact us at:

Email: privacy@cs.tabslate.com