Browser Info Detector

Detect your browser, operating system, screen size, user agent, and supported features.

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Understanding Browser Fingerprinting

Browser fingerprinting is a technique websites use to identify and track users based on their browser and device characteristics. Unlike cookies, which users can delete, fingerprints are derived from persistent hardware and software configurations. Research by the Electronic Frontier Foundation found that most browsers are unique enough to be tracked without cookies.

What Makes Up Your Fingerprint

  • User agent string
  • Screen resolution, color depth, and pixel ratio
  • Installed fonts and plugins
  • Timezone, language, and keyboard layout
  • Canvas and WebGL rendering behavior
  • Hardware capabilities (CPU cores, device memory, battery status)
  • Audio context and media device enumeration

Privacy Modes and Limitations

Incognito and private browsing modes mainly prevent local storage of history and cookies. They do not mask your IP address, screen size, or browser version from websites. For true anonymity, tools like the Tor Browser route traffic through multiple encrypted relays and standardize browser fingerprints across all users. See the EFF's Cover Your Tracks project to test your own fingerprint.

Related Developer Tools

Check your network identity with our What Is My IP tool, inspect your display with the Screen Resolution Checker, or parse user agent strings in detail with the User Agent Parser. Developers may also find our Hash Generator useful for checksum verification.

References: Wikipedia — User agent, EFF Cover Your Tracks, MDN Web Docs — Navigator API.

Frequently Asked Questions

A user agent string is a text identifier that browsers send to web servers with every HTTP request. It was originally created in the early 1990s so servers could serve different content to different browsers. Over time, it grew into a complex string containing browser name, rendering engine, operating system, and device details.

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