What is a browser fingerprint?

A browser fingerprint is a collection of data about your browser and device 鈥?such as screen size, fonts, plugins, and hardware 鈥?that can uniquely identify you online without cookies.

How does browser fingerprinting work?

Websites use JavaScript to collect details about your browser, OS, screen, GPU, fonts, and more. Combined, these details create a unique fingerprint that can track you across sites.

Can I prevent browser fingerprinting?

You can reduce fingerprinting by using privacy-focused browsers like Tor or Firefox with resistFingerprinting enabled. However, completely preventing fingerprinting is very difficult.

Is browser fingerprinting legal?

Browser fingerprinting is generally legal, but it raises privacy concerns. Some regulations like GDPR require websites to obtain consent before using tracking technologies including fingerprinting.

Is this browser fingerprint test free?

Yes, this browser fingerprint test is completely free. No account, no signup, and no payment required. All tests run locally in your browser.

Browser Fingerprint Test

Discover how unique your browser is. Our tool analyzes your browser's Canvas, WebGL, AudioContext, fonts, plugins, screen resolution, and other attributes to generate a comprehensive fingerprint profile.

What is Browser Fingerprinting?

Browser fingerprinting is a technique used to identify and track users based on the unique characteristics of their web browser and device. Unlike cookies, fingerprinting works without storing anything on your device, making it harder to detect and block.

How Fingerprinting Works

Canvas Fingerprinting: Exploits differences in how browsers render graphics on HTML5 Canvas elements, producing unique visual output based on your GPU, drivers, and font rendering.
WebGL Fingerprinting: Collects information about your graphics card, renderer, and supported WebGL extensions to create a unique identifier.
AudioContext Fingerprinting: Uses the Web Audio API to analyze how your audio hardware and software process sound signals.
Font Detection: Detects which fonts are installed on your system by measuring how text renders in different typefaces.
Hardware Probing: Gathers device hardware info like CPU cores, memory, screen resolution, and touch capabilities.

How does this tool work?

This tool runs entirely in your browser — no data is sent to any server. It collects attributes from your browser's APIs (Canvas, WebGL, AudioContext, fonts, hardware, plugins, screen, and more), hashes them together, and calculates a uniqueness score that estimates how identifiable your browser is among the general population.

The scan is performed locally using JavaScript. Your fingerprint data never leaves your device, making this a safe and private way to assess your browser's identifiability.

Why should you check your fingerprint?

Privacy awareness: Understand how trackable you are online, even without cookies.
Browser comparison: See how different browsers or privacy settings affect your fingerprint.
Security testing: Verify that your anti-fingerprinting tools (Tor, resistFingerprinting) are working.
Education: Learn which browser attributes contribute most to your uniqueness.

How to Reduce Your Fingerprint

Use a privacy-focused browser: Browsers like Tor Browser or Firefox with resistFingerprinting enabled actively combat fingerprinting.
Disable JavaScript: Most fingerprinting techniques require JavaScript, but this will break many websites.
Use browser extensions: Extensions like Privacy Badger or Canvas Blocker can randomize or block fingerprinting attempts.
Keep your browser updated: Modern browsers are adding more anti-fingerprinting protections.
Use a VPN: While it doesn't stop fingerprinting, it masks your IP address and location.