Privacy Audit Tool
BrowserFingerprint Test
Discover what unique data your browser exposes that allows websites to track you — even without cookies, even through a proxy or VPN. Generates your real fingerprint from 20+ signals.
Click the button to generate your complete browser fingerprint
ALL ANALYSIS RUNS LOCALLY — NOTHING SENT TO ANY SERVER
Frequently Asked Questions
What is browser fingerprinting?+
Browser fingerprinting is a tracking technique that collects data points about your browser and device — screen resolution, fonts, GPU capabilities, timezone, language, and dozens more — to create a unique identifier. Unlike cookies, fingerprints cannot be deleted. They persist across private browsing sessions, across different browsers on the same device, and even across VPN connections, because the fingerprint comes from your hardware and software configuration, not your IP address.
Does a VPN or proxy protect against fingerprinting?+
No. A proxy or VPN changes your IP address but does nothing to alter the browser fingerprint signals — your screen resolution, fonts, GPU rendering, and other characteristics remain identical. A sophisticated tracker can identify you by your fingerprint even if your IP changes every hour. To reduce fingerprinting, you need browser-level protections such as Firefox strict mode, Brave browser’s randomisation, or Tor Browser.
What is a canvas fingerprint?+
Canvas fingerprinting works by drawing an invisible image in your browser using the HTML5 Canvas API. The way your GPU, graphics driver, and browser render this image differs slightly between devices — different sub-pixel rendering, anti-aliasing, and colour blending. The pixel data from this rendering is converted to a hash that is unique to your hardware/software combination. It was first documented in academic research in 2012 and is now used by major advertising networks.
How unique is my fingerprint?+
Research by the Electronic Frontier Foundation (EFF) found that browser fingerprints are unique for over 80% of users. The combination of signals — particularly canvas fingerprint, WebGL renderer, screen resolution, installed fonts, and timezone — creates a combination that is statistically very rare. Common browsers on common hardware (like Chrome on Windows at 1920×1080) have lower uniqueness because many people share those characteristics, while unusual configurations are almost perfectly unique.
Does private/incognito mode protect against fingerprinting?+
No. Incognito mode prevents cookie storage and browsing history but does nothing to alter your browser fingerprint. Run this test in an incognito window — you will get the same fingerprint hash. The signals collected (screen resolution, fonts, GPU) are properties of your hardware and browser installation, not of your browsing session. The only way to change your fingerprint in incognito mode is to use a browser with active fingerprint randomisation like Brave or Tor.
