User Agent Parser – Extract Browser & Device Info

About User Agent Parser

The User Agent Parser is an essential tool for web developers working with browser detection and analytics. It extracts detailed information from user agent strings including browser, operating system, device type, and rendering engine. Perfect for debugging, analytics, and understanding client environments.

Use Cases:

Debugging browser-specific issues in web applications

Understanding client environment for analytics

Testing user agent detection logic

Learning how browsers identify themselves

Verifying user agent strings from logs

Detecting device types and capabilities

Key Features:

Browser name and version detection

Operating system identification

Device type detection (mobile/tablet/desktop)

Rendering engine extraction

Use current browser's user agent

100% browser-based - no server processing

Parse a user agent string

Paste the UA string into the input field.
The parser extracts browser name, version, OS, and device type.
Use the results for debugging, analytics, or access control decisions.

Frequently Asked Questions

What is a user agent string?

A user agent string is a text identifier sent by browsers and apps in HTTP request headers. It identifies the browser name, version, operating system, and device type to the web server.

How do I find my own user agent string?

Your current user agent is automatically shown at the top of this tool. You can also find it in browser developer tools under Network → request headers → User-Agent.

Why do user agent strings look so complex?

They evolved for historical compatibility — each browser added tokens from earlier browsers to ensure servers would serve them modern content. The result is a string with many overlapping identifiers.

Can I use this for analytics or debugging?

Yes. Paste user agent strings from server logs or API requests to identify what browsers or bots are hitting your endpoints.