Last updated: March 2026
🔒 CookieGhost does not collect, store, transmit, or sell any personal data. Ever.
What CookieGhost Does
CookieGhost is a browser extension that anonymizes tracking cookies in real-time. When a website sets a tracking cookie (e.g. Google Analytics _ga, Facebook Pixel _fbp), CookieGhost replaces the cookie's value with a realistic-looking random value — so the website functions normally, but the tracker cannot build a profile of you.
CookieGhost never blocks or deletes cookies. Auth cookies, session cookies, and login tokens are always preserved exactly as-is.
Data We Collect From You
We collect absolutely nothing. No data leaves your device.
| Data Type | Collected? | Notes |
|---|---|---|
| Browsing history / URLs visited | ✗ Never | Not read, not stored |
| Cookie values (original or randomized) | ✗ Never | Processed in memory only |
| Personal information (name, email, etc.) | ✗ Never | Not applicable |
| Page content or form data | ✗ Never | Extension never reads page content |
| IP address or location | ✗ Never | Not transmitted anywhere |
| Anonymous cookie counts (local only) | ✓ Yes | Stored on your device only — e.g. "42 cookies randomized today" |
| Your settings / preferences | ✓ Yes | Stored locally on your device only |
What Is Stored Locally on Your Device
CookieGhost stores the following data in your browser's local storage (chrome.storage.local). This data never leaves your device:
- Settings — your chosen protection mode (Aggressive / Balanced / Gentle), whitelist, blacklist
- Session seeds — random values used to ensure the same cookie gets the same fake value within a session. Automatically cleared when the browser closes.
- Statistics — anonymous counts of how many cookies were randomized/preserved. No URLs, no cookie values, no personal data.
Permissions Explained
CookieGhost requests the following browser permissions — here's exactly why each is needed:
- cookies — To read and overwrite tracking cookie values with random data.
- storage — To save your settings and anonymous stats locally on your device.
- activeTab — To display per-site stats in the popup (e.g. "12 cookies randomized on this site").
- declarativeNetRequest — To block cookies from hardcore tracker domains (e.g. doubleclick.net).
- alarms — To periodically save stats and reset session seeds.
- host_permissions (<all_urls>) — Tracking cookies appear on every website, so the extension must be able to intercept cookie headers on all sites.
Third Parties
CookieGhost shares zero data with any third party. No analytics. No crash reporting. No telemetry.
Remote Code
CookieGhost does not load or execute any remote code. All JavaScript is bundled within the extension package itself. No external scripts are fetched at runtime.
Children's Privacy
CookieGhost does not collect data from anyone, including children under 13. The extension is safe for all ages.
Changes to This Policy
If this policy is updated, the "Last updated" date at the top of this page will change. We will never retroactively introduce data collection without explicit user notice.
Contact
Questions about this privacy policy? Open an issue on GitHub: