User Agent Parser

Extract detailed browser and device information from any user agent string with this free online tool. It is ideal for web developers, marketers, and support teams analyzing web traffic. Use it to debug device-specific issues or track user environments.

How the User Agent Parser works

  1. 1

    Add Your Content

    Paste a raw user agent string into the input field, or click the button to fill in your own browser's user agent instantly.

  2. 2

    Process Your Data

    The tool parses the string using regular expressions to identify the browser name with version, rendering engine, operating system, and device type. The result updates live as you edit.

  3. 3

    Get Your Results

    View the structured breakdown of the user agent in the output area. You can use this data to optimize your website for specific devices or debug rendering issues.

Real-world examples

Desktop Debugging

Input: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Results: Browser: Chrome 120.0.0.0, Engine: Blink / WebKit, OS: Windows 10/11, Device: Desktop.

Use case: Developers reproduce layout bugs on the exact browser version a reporter was using.

Support Diagnostics

Input: Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Mobile/15E148 Safari/604.1

Results: Browser: Safari 17.4, Engine: Blink / WebKit, OS: iOS, Device: Mobile.

Use case: Support teams confirm the exact environment of a customer reporting a rendering problem.

Marketing Analytics

Input: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.2210.61

Results: Browser: Microsoft Edge 120.0.2210.61, Engine: Blink / WebKit, OS: Windows 10/11, Device: Desktop.

Use case: Marketers segment traffic correctly even when Edge identifies itself with Chrome tokens first.

E-commerce Checkout

Input: Mozilla/5.0 (Linux; Android 13; Pixel 7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Mobile Safari/537.36

Results: Browser: Chrome 121.0.0.0, Engine: Blink / WebKit, OS: Android, Device: Mobile.

Use case: Store owners verify which mobile browsers reach the checkout before adding app-like features.

Blog Writing

Input: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:124.0) Gecko/20100101 Firefox/124.0

Results: Browser: Firefox 124.0, Engine: Gecko, OS: macOS, Device: Desktop.

Use case: Tech bloggers write accurate, environment-specific guides for their readers.

User Agent Parser FAQ

Do I need to create an account?

No, you can use this tool immediately without signing up or logging in.

Is my data secure and private?

Yes, all processing happens directly in your browser, so no data is ever sent to our servers.

Does it work offline?

Once the page is loaded, the core logic works offline since it runs locally in your browser.

Why does a Windows 11 machine show Windows 10/11?

Modern browsers on Windows 11 still report the token Windows NT 10.0 in their user agent, so the tool honestly labels that value Windows 10/11 instead of guessing.

Does the tool detect crawlers and bots?

No. Strings such as Googlebot do not match its browser patterns and come back as Unknown, so treat Unknown results as possible bots or unusual clients.

How is it different from similar tools?

It runs entirely client side with no lookup database, and it adds a one-click button that fills in your own browser's user agent for quick testing.

What is the technical working principle?

It uses client side JavaScript and regex patterns to parse the UA string and extract browser, OS, and device tokens.

What is a common use case?

Support teams use it daily to identify the exact device and browser a customer is using when reporting a bug.

Why use the User Agent Parser?

  • Instant Processing: Get immediate results without waiting for server responses or page reloads.
  • Zero Registration: Start working right away without the hassle of creating an account.
  • Complete Privacy: Your inputs never leave your device, ensuring total data confidentiality.
  • User Friendly Interface: Enjoy a clean, distraction-free layout designed for quick and easy use.
  • Cross-Platform Compatibility: Works seamlessly on desktops, tablets, and mobile web browsers.
  • No Software Installation: Access the tool directly from your browser without downloading anything.
  • Real time Updates: See the output update automatically as you type or modify your input.
  • Completely Free: Access all features without any hidden fees, subscriptions, or premium upgrades.

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