Browser Fingerprint Viewer

See the signals your browser exposes for fingerprinting. Educational privacy tool - nothing is sent to any server.

Last reviewed: April 2026
Reviewed by , software engineer · last updated April 2026

New to this tool? Click here for instructions

Educational tool only. This page collects and displays your browser's fingerprint signals locally for learning purposes. No data leaves your browser. Fingerprinting is used by ad networks and trackers to identify users without cookies.
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Signals Collected
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Entropy (bits)
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Uniqueness (1 in N)

A fingerprint canvas draws standardized text and shapes; the resulting pixel data is hashed to produce a near-unique device identifier. The hash below is unique to your GPU, driver, and rendering stack.

SHA-256 hash of canvas pixel data:

Computing…

WebGL exposes the GPU vendor and renderer strings, which are highly unique across device models. These are read via WEBGL_debug_renderer_info extension.

How to reduce your browser fingerprint and protect your privacy online.

Collecting browser signals…

How to use Browser Fingerprint Viewer

To use the Browser Fingerprint Viewer, simply navigate to the tool's page and click on the 'Inspect Fingerprint' button. The tool will collect and display your browser's fingerprint signals locally, without sending any data to any server.

When to use the Browser Fingerprint Viewer

The Browser Fingerprint Viewer is ideal for anyone who wants to learn about browser fingerprinting and how it works. It is also useful for developers who want to understand the signals their users' browsers expose and how to reduce their browser fingerprint.

How it works

The Browser Fingerprint Viewer collects the same signals that commercial fingerprinting libraries use, then displays them to you in a readable format. Everything happens locally in your browser's JavaScript engine - no data is sent anywhere. The tool collects signals such as user agent string, screen resolution, installed fonts, GPU model, language, timezone, and more, and combines them into a unique hash called a fingerprint. The tool then displays this information in a user-friendly format, allowing you to see the signals your browser exposes for fingerprinting.

Tips, Edge Cases, or Limitations

The Browser Fingerprint Viewer is a client-side tool and does not collect or send any data to any server. However, browser fingerprinting is a powerful and controversial tracking technique. While the Browser Fingerprint Viewer can help you understand how browser fingerprinting works, it cannot prevent it. To reduce your browser fingerprint, you can use privacy-focused browsers, clear your browser's cache and cookies, and use a VPN.

Frequently Asked Questions

Browser fingerprinting is a tracking technique that identifies users without storing any data on their device. Instead of a cookie, it reads dozens of browser and hardware attributes - screen resolution, installed fonts, GPU model, language, timezone, and more - and combines them into a unique hash called a fingerprint.
Canvas fingerprinting is a type of browser fingerprinting that uses the HTML5 Canvas API to create a unique identifier based on the pixel data of a standardized drawing. This can be used to track users across different websites.
Entropy in the context of browser fingerprinting refers to the randomness or unpredictability of the signals collected. Higher entropy means that the signals are more unique and harder to predict, making it more difficult for tracking services to identify users.
No, the Browser Fingerprint Viewer does not send any of your fingerprint data to any server. All data is collected and displayed locally in your browser.
To reduce your browser fingerprint, you can use privacy-focused browsers, clear your browser's cache and cookies, and use a VPN. Additionally, you can disable or limit the use of third-party scripts and plugins that may contribute to fingerprinting.

Quick reference

Browser Fingerprint Viewer Quick Reference
Parameter Description Common Values Comparison
User Agent String Browser identity and version Chrome 120.0.0, Firefox 115.0, Safari 616.8 Differentiates between browser types and OS
Screen Resolution Display dimensions in pixels 1920x1080, 1366x768, 1280x800 Varies by device and browser window size
Timezone Local time offset from UTC +08:00, -07:00, +02:00 Reflects user's geographic location
Language System language preference en-US, zh-CN, fr-FR Matches OS settings or browser locale
WebGL Renderer Graphics processing unit identifier Intel Iris Xe, NVIDIA GeForce RTX 3080, AMD Radeon RX 6800 Dependent on hardware and driver versions
Canvas Fingerprint Unique identifier from HTML5 canvas Unique hash strings Varies by browser and system configuration