Browser Fingerprint Test
See what your browser shares with every site you visit.
What this test shows
Every website can read the values above without asking for permission. Each one on its own is common, but together they form a fingerprint that can be unique enough to recognize your browser across sites and visits, even after you clear cookies or use a private window.
The test runs entirely in your browser. Nothing is sent to our server.
What each value means
| Value | Why it matters for tracking |
|---|---|
| Browser and version, operating system | Narrows you down to a group of users with the same setup. |
| Screen size, window size, pixel ratio | Unusual screen sizes and zoom levels stand out. |
| Language and timezone | Must match each other and your IP location; a mismatch is a VPN clue. |
| CPU cores and memory | Hardware details that vary from device to device. |
| Graphics vendor and card (WebGL) | One of the most identifying values, as it names your exact GPU. |
| Canvas fingerprint | Your device draws text and shapes slightly differently from others; the hash captures that. |
| Do Not Track, Global Privacy Control | Privacy signals you send; ironically, rare settings also make you stand out. |
How to reduce your fingerprint
- Use a browser with fingerprinting protection. Firefox (with Enhanced Tracking Protection set to Strict), Brave and Safari reduce or randomize several values. Tor Browser makes all its users look the same.
- Avoid unusual settings. Rare fonts, extensions and screen sizes make you more unique.
- Keep your browser updated, so you share a common version with millions of others.
- Combine with a VPN to hide your IP, which is the first thing trackers use.
Read what is browser fingerprinting to learn how trackers use these values.
Frequently asked questions
Is my fingerprint ID permanent?
No. It changes when you update your browser, change settings or use another device. Trackers combine several signals to follow those changes.
Is browser fingerprinting legal?
In the EU and UK, fingerprinting for tracking needs the user's consent, like cookies. In many other regions it is less regulated.
Does private or incognito mode stop fingerprinting?
No. Private mode deletes cookies and history when you close the window, but your fingerprint stays the same.
Learn more
What does incognito mode actually hide?
Private and incognito browsing stop your device from saving history and cookies. They do not hide your IP or activity from sites, your ISP or employer.
Privacy & VPN · 2 min readHow to hide your IP address
VPNs, proxies, Tor and mobile networks compared on how much they hide, how fast they are and what they cost.
Privacy & VPN · 2 min readWhat is browser fingerprinting?
Browser fingerprinting identifies you from your browser's settings and hardware, even without cookies. Learn how it works and how to protect yourself.
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