Free Online Tool
Test d'empreinte navigateur (Browser Fingerprint)
Voyez exactement ce que votre navigateur expose aux trackers : hash canvas, rendu GPU, polices installées, empreinte audio, et bien plus. Tout s'exécute localement dans votre navigateur. Rien n'est envoyé à nos serveurs.
Qu'est-ce que le browser fingerprinting ?
Le browser fingerprinting collecte les attributs du navigateur et de l'appareil — rendu canvas, polices installées, modèle de GPU, fuseau horaire, résolution d'écran — pour générer un identifiant statistiquement unique sans stocker de données sur votre appareil. Contrairement aux cookies, les empreintes survivent à l'effacement de l'historique, au mode navigation privée, et même à l'utilisation d'un VPN.
Unlike traditional cookie tracking, fingerprinting requires no consent dialog and no storage on your device. The technique combines dozens of browser API responses into a single hash that uniquely identifies your browser configuration across sessions and incognito windows. Read our complete browser fingerprinting technical guide for a deep-dive on every vector and countermeasure.
For a comparison of how privacy browsers handle fingerprinting, see State of browser privacy 2026 and our Brave vs Tor vs Mullvad vs LibreWolf comparison.
How to read the entropy badges
Highly identifying — canvas hash, WebGL renderer, audio fingerprint, and detected fonts have enough entropy to uniquely identify most browsers alone.
Identifying in combination — timezone, screen resolution, language list, and platform narrow down a population when combined with other signals.
Minor contribution — DNT setting, cookie status, and touch support add small entropy increments but rarely identify on their own.
Frequently asked questions
Is this browser fingerprint test accurate?
It collects the same signals (canvas, WebGL, AudioContext, fonts, screen, navigator APIs) that real fingerprinting libraries like FingerprintJS use. The uniqueness score is an approximation based on signal entropy — not a statistical measurement from a real user population.
Does this tool track me or store my fingerprint?
No. Every calculation happens inside your browser tab using client-side JavaScript. No data is sent to any server. You can verify this by inspecting the Network tab in DevTools while the test runs.
Does a VPN hide my browser fingerprint?
No. A VPN masks your IP address and ISP, but your canvas hash, WebGL GPU renderer, installed fonts, screen resolution, and AudioContext fingerprint remain completely unchanged. Trackers who rely on these signals will still identify you across VPN sessions.
What browser blocks fingerprinting best?
Mullvad Browser and Tor Browser are purpose-built to normalize fingerprinting signals — they report identical canvas, WebGL, and font data across all users, making individual identification much harder. Brave provides partial protection via randomization. See our full privacy browsers comparison. Read our browser comparison →
What does 'canvas hash' mean?
The canvas fingerprint technique draws text and shapes on an invisible canvas element. Your OS, browser, GPU, and installed fonts all influence the rendering at the pixel level, producing a hash that is unique to your specific hardware and software combination.