Browser Info: Details & Fingerprint

See exactly what websites know about you. Our browser info tool reveals your user-agent, hardware specs, and unique fingerprint in real time.

AI Overview

A Browser Info Tool acts as a mirror for your web browser. It identifies your software version, screen resolution, and CPU cores. Trackers use this data to create a fingerprint that can identify you without cookies. Auditing this info helps you improve your online privacy and security.

Full User-Agent String

Detecting...

Browser & OS

Name...
Version...
System...
Language...

Hardware Specs

Resolution...
CPU Cores...
Memory...
Timezone...

Privacy Leaks

Cookies...
DNT...
Battery...
WebRTCChecking...

What Information Does My Browser Reveal?

Every time you open a website, your browser shares a wealth of metadata. This includes your User-Agent string, which tells the site your browser version and operating system. While this is helpful for displaying the correct layout, it also creates a digital footprint that websites use to track you.

Security Tip: Use the ZKB Tracking inspector to see if your browser reveals sensitive data like battery level or internal IP addresses via WebRTC.

How Browser Fingerprinting Works

Fingerprinting is a method used to identify you without cookies. By combining small details—like your screen resolution, installed fonts, and GPU type—trackers can create a unique ID for your device. This ID remains the same even if you use a VPN or Incognito mode.

How to Improve Your Privacy

  • Use Privacy Browsers: Browsers like Brave or Firefox have built-in tools to block fingerprinting.
  • Disable WebRTC: This prevents your real IP address from leaking through a VPN tunnel.
  • Update Regularly: Keeping your browser updated ensures you have the latest privacy patches.
  • Check Your Headers: Use our Headers Analyzer to see exactly what your requests contain.

Frequently Asked Questions

Can a website see my CPU cores?
Yes. Websites use the hardwareConcurrency API to see how many logical processors your device has.

Is my User-Agent unique?
Usually, yes. Since your browser version changes frequently, your User-Agent helps trackers identify you easily.

Does disabling cookies stop tracking?
No. Fingerprinting allows tracking even when cookies are disabled, which is why browser info tools are so important for 2026.