Browser Fingerprint
See exactly what your browser reveals about you — without cookies or login.
How Does the Browser Fingerprint Test Work?
Browser fingerprinting is a tracking technique that identifies users by collecting a unique combination of browser and device attributes. Unlike cookies, which can be deleted, a fingerprint is assembled from data your browser willingly shares with every website you visit: your operating system, installed fonts, screen resolution, graphics card, timezone, language settings, and dozens more data points.
This tool reads these attributes using standard JavaScript APIs that are available to every website. It then displays them so you can see exactly what information is being broadcast. When combined, these attributes create a "fingerprint" that is statistically unique — research has shown that over 90% of browsers have a unique fingerprint, making it an extremely effective method for tracking users across the web without their knowledge or consent.
Why is Browser Fingerprinting Important for Privacy?
Browser fingerprinting is significant because it operates entirely outside the traditional tracking mechanisms that users have learned to control. Clearing your cookies, using incognito mode, or even switching VPN servers does nothing to change your browser fingerprint. Advertising networks, analytics companies, and even fraud detection services use fingerprinting to follow you across the internet, building detailed profiles of your browsing habits.
Understanding your fingerprint is the first step to protecting yourself. If you see that your WebGL renderer reveals your exact graphics card model, or that your screen resolution and timezone combination is unique, you can take steps to mitigate tracking. Using privacy-focused browsers like Firefox with resist fingerprinting enabled, the Tor Browser, or browser extensions that randomize fingerprint attributes can significantly reduce your trackability online.
Frequently Asked Questions
Q: Can I prevent browser fingerprinting?
A:You can reduce it but not eliminate it entirely. Use Firefox with privacy.resistFingerprinting enabled, the Tor Browser (which standardizes all fingerprint attributes), or extensions like Canvas Blocker. Avoid installing unique browser extensions and use common screen resolutions.
Q: Is fingerprinting more effective than cookies?
A:Yes. Cookies can be deleted, blocked, or expire. A browser fingerprint persists across sessions and is very difficult to change because it is derived from your hardware and software configuration rather than stored data.
Q: Does incognito mode prevent fingerprinting?
A:No. Incognito mode only prevents your browser from saving local history and cookies. Your browser fingerprint remains exactly the same in incognito mode as in normal browsing.
Q: What is canvas fingerprinting?
A:Canvas fingerprinting draws invisible graphics using the HTML5 Canvas API. Because different GPUs, drivers, and OS configurations render pixels slightly differently, the resulting image hash is unique and can be used as an identifier.