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What Does My Browser Reveal?

Instantly see which data websites read about you — without cookies

🔒 runs locally · no upload · no tracker

See in real time which data every website can read about you just from your visit — without any cookies.

This is what every website sees about you — just from your visit, without any cookies:

🔒 These values are read only in your browser and are never stored or sent anywhere.

💡 Why this tool?

Merely loading a page reveals browser, system, time zone and more. These traits form a fingerprint that re-identifies you without cookies.

Your benefits

  • ✓Instant, readable overview without a click
  • ✓Shows the key tracking traits
  • ✓100% local — nothing is sent

🔧 How it works

  1. 1Open the page — values appear instantly
  2. 2Review entries like time zone and resolution
  3. 3For the full test use the Privacy Score

❓ Frequently asked questions

Is this data sent anywhere?▼
No. All values are read and shown only locally in your browser. Nothing is stored or sent to a server.
Does every website really see this?▼
Yes. These values are automatically available to every website — without any cookies or your consent. This is exactly what a "fingerprint" is built from.
How do I protect myself?▼
Browsers like Tor or Brave and anti-fingerprinting settings normalize many of these values. The full uniqueness test is in the Privacy Score.
Does it work offline?▼
Yes. After the first load the browser check needs no internet connection.