Supercookies are tracking mechanisms that persist beyond regular cookie clearing by using alternative storage methods like LocalStorage, IndexedDB, and canvas fingerprinting. 2. To remove them, clear all site data in Chrome by selecting browsing history, cookies, cached files, and site settings under Clear browsing data. 3. Manually manage site storage via chrome://settings/content/all to delete data from suspicious domains. 4. Block third-party cookies and enable “Do Not Track” requests to reduce future tracking. 5. Use privacy extensions like uBlock Origin and Cookie AutoDelete to enhance protection. 6. Regularly maintain privacy by using Incognito mode, cleaning unused site data, and keeping Chrome updated, which significantly reduces supercookie persistence though fingerprinting may still occur.

Supercookies—persistent tracking mechanisms that can survive regular cookie clearing—are a privacy concern for many Chrome users. While Chrome has made strides in blocking third-party cookies and reducing tracking, some forms of supercookies (like evercookies, canvas fingerprinting, or localStorage exploits) can still linger. Here’s how to find and remove them effectively.

? What Are Supercookies and Why Are They Different?

Unlike regular cookies, supercookies aren’t just stored in the usual cookie jar. They use alternative storage methods such as:

• LocalStorage and SessionStorage
• IndexedDB
• Web SQL (deprecated but still used)
• Cache storage
• ETags or HTTP cache tracking
• Canvas or WebGL fingerprinting (not deletable, but detectable)

These methods allow trackers to rebuild your browsing profile even after you clear cookies.

?? How to Find and Delete Supercookies in Chrome

1. Clear All Site Data (Including Supercookie Storage)

This is the most effective way to wipe out alternative tracking storage:

1. Open Google Chrome.
2. Click the three-dot menu → Settings.
3. Go to Privacy and security → Clear browsing data.
4. Choose Advanced tab.
5. Select All time as the time range.
6. Check all boxes, especially:
   • Browsing history
   • Cookies and other site data
   • Cached images and files
   • Site settings
7. Click Clear data.

? This removes LocalStorage, IndexedDB, and other hidden storage used by supercookies.

Alternatively, manually clear data for specific sites:

• Go to Settings → Privacy and security → Cookies and other site data → See all site data and information.
• Browse or search for suspicious domains.
• Click the trash icon next to any tracker or ad network (e.g., doubleclick.net, facebook.com, googleadservices.com).

2. Use Chrome’s Site Storage Management

Chrome lets you inspect and delete storage per site:

1. In the address bar, type:
   chrome://settings/content/all
2. Scroll through the list of websites.
3. Click the three dots next to any site using excessive or suspicious storage.
4. Choose Remove or Clear data.

? Some sites store data even without your permission—this gives you direct control.

3. Disable or Limit Third-Party Storage

Prevent future tracking:

1. Go to Settings → Privacy and security → Third-party cookies.
2. Enable Block third-party cookies (or use Block third-party cookies in Incognito for a lighter option).
3. Optionally, toggle on Send a "Do Not Track" request (though not all sites honor it).

? Consider using Chrome’s Tracking Protection (beta) if available in your version (go to chrome://flags and search for tracking protection).

4. Use Privacy Extensions (Optional but Helpful)

While not a replacement for manual cleaning, these tools help detect and block supercookie-like behavior:

• uBlock Origin – Blocks tracking scripts and ads.
• Cookie AutoDelete – Automatically removes cookies and site data when you close tabs.
• Privacy Badger – Detects and blocks invisible trackers.

?? Avoid ad blockers with data collection practices—stick to open-source, reputable tools.

? Regular Maintenance Tips

• Use Incognito mode for sensitive browsing (no persistent storage).
• Periodically visit chrome://settings/content/all and clean unused site data.
• Keep Chrome updated—Google continuously improves anti-tracking features.

Basically, Chrome doesn’t label anything as a “supercookie,” but by clearing all site data and managing storage per site, you’re effectively removing the mechanisms trackers use to persist. It’s not 100% foolproof against fingerprinting, but it stops most data reconstruction tricks.

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