See exactly what your browser reveals to every site you visit. This scan collects the signals commonly used for fingerprinting, from screen and timezone to GPU renderer and canvas rendering hash, and combines them into a single identifier so you can judge how identifiable you are.
How to use it
- Press Scan my browser. Nothing is collected until you ask for it.
- Review each signal individually to see what a site can read without permission.
- Compare the resulting fingerprint across browsers, or in a private window, to see what actually changes.
How fingerprinting identifies you without cookies
No single item here identifies anyone. Plenty of people share your screen resolution or your timezone. Identification comes from combination: each additional attribute multiplies the number of distinguishable configurations, and a few dozen ordinary values are usually enough to single out one browser among millions. The information-theoretic way to say it is that each signal contributes bits of entropy, and roughly thirty-three bits would be enough to distinguish every person on Earth.
The strongest contributors are the ones users never think about. Canvas fingerprinting asks the browser to draw text and shapes offscreen and hashes the pixels; tiny differences in GPU, driver, font rasterisation and anti-aliasing make the result remarkably stable per device. WebGL exposes the graphics renderer string, often naming the exact GPU. Installed fonts, hardware concurrency, device memory and audio-stack behaviour add further bits.
Why this matters for privacy
Fingerprinting is stateless. It stores nothing on your device, so clearing cookies does not reset it, private browsing does not defeat it, and it works across sites that never set an identifier. That makes it attractive for tracking and for fraud detection alike, and it is why regulators increasingly treat it as personal-data processing requiring consent.
Mitigations exist but involve trade-offs. Tor Browser makes many users look identical by standardising values and letterboxing the window. Firefox offers resist-fingerprinting and blocks known scripts. Brave randomises canvas and audio output per session. Counter-intuitively, an unusual setup, an exotic font set or a rare extension that alters the page can make you more identifiable, not less. This entire scan runs locally in your browser; the collected values and the fingerprint are never transmitted, stored or logged by this site.
Frequently asked questions
Will a VPN or incognito mode hide me?
Neither addresses fingerprinting. A VPN changes your apparent IP address but not one of the browser attributes measured here, and private windows only discard local state such as cookies and history. Your canvas hash, GPU string and font set are typically unchanged.
Why does my fingerprint change between browsers on the same machine?
Because much of the entropy comes from browser-level behaviour: the user-agent, rendering and font stack, plugin surface and API set all differ. The device is the same, but the browser exposes a different profile of it.
Is my fingerprint uploaded here?
No. Every value is computed in your own tab and stays there. Nothing is sent to a server, and closing the page discards it.
Related tools: User-Agent Parser, Password Checker, Hash Analyzer.