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User Agent Finder

Instantly detect and display your browser's user agent string. Parse it to identify your browser name, version, OS, device type, and rendering engine.

Used 21.4K times today

BrowserUnknown
Browser VersionUnknown
EngineUnknown
Operating SystemUnknown
Device TypeDesktop
MobileNo
TabletNo
Node.js/24
What is a User-Agent? The User-Agent string is sent by your browser with every HTTP request. Websites use it to serve the correct version of their site. It can be used for fingerprinting, but modern privacy tools can spoof it.

How to Use User Agent Finder

  1. 1

    Open the tool

    Navigate to the User Agent Finder — your browser's user agent string is detected and displayed automatically on page load.

  2. 2

    Read the parsed breakdown

    See your browser name and version, operating system and version, device type (desktop, mobile, tablet), and rendering engine.

  3. 3

    Copy the user agent string

    Use the copy button to grab the full raw user agent string for use in debugging, API testing, or scraping configurations.

Frequently Asked Questions

What is a user agent string?
A user agent string is a text identifier sent by your browser in every HTTP request. It tells websites which browser, version, and operating system you are using so they can serve appropriate content.
Can websites use my user agent to track me?
User agent strings are a minor part of browser fingerprinting. While not uniquely identifying on their own, they can be combined with other signals (screen resolution, fonts, etc.) to create a unique fingerprint.
How do I change my user agent?
You can spoof a different user agent using browser developer tools (Network Conditions in Chrome DevTools), browser extensions, or by configuring custom headers in HTTP clients like Postman or curl.

About User Agent Finder

The User Agent Finder on Utilko reads the user agent string your browser sends with every web request and presents it in both raw and parsed form. Developers and QA engineers use this to confirm what server-side user-agent detection would see for a given browser, verify that responsive design breakpoints align with device categories, and troubleshoot bot-detection logic.

The parsed view breaks the user agent down into recognisable components — browser name and version, OS, and rendering engine — making it easy to understand at a glance without manually decoding the complex syntax of modern user agent strings.

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Browser Info

See full details about your browser and device: browser name, version, OS, screen resolution, color depth, language, timezone, cookies, and JavaScript status.