What websites see about you? All-in-one fingerprint checker to help you evaluate your browser privacy.
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Learn about browser fingerprinting technology and protect your online privacy
Browser fingerprinting is a technique that identifies users by collecting browser and device characteristics. When you visit websites, your browser automatically exposes a wealth of information, including:
Research shows that by combining this information, over 99% of internet users can be uniquely identified. This means your browser fingerprint is as unique as a real-world fingerprint.
Detect Your Browser Fingerprint NowGuides on browser fingerprinting, privacy, and network diagnostics.
navigator.getBattery() leaked battery level and charge estimates with no prompt. Why Firefox pulled it, WebKit never shipped it, and the lesson for new APIs.
Early IPv6 addresses baked in your network card's MAC address, making devices trackable across networks. Here's how privacy extensions fixed that.
Keyboard layout fingerprinting reads getLayoutMap() to see your physical key layout — a silent, Chromium-only signal that hints at locale and barely changes.
Common questions about browser fingerprint detection
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BrowserInsight - Free browser fingerprint detection tool to protect your online privacy
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