What Is My User Agent?

View your browser's user agent string and parsed details. This is the identification string your browser sends to every website you visit.

Your User Agent String Loading...

Parsed Information

Browser -
Browser Version -
Operating System -
Device Type -
Platform -
Language -

What is a User Agent?

A user agent is a string of text that your browser sends to websites identifying itself. It contains information about your browser, operating system, and device.

User Agent Components

A typical user agent string contains:

  • Browser name and version - e.g., Chrome/120.0
  • Rendering engine - e.g., AppleWebKit/537.36
  • Operating system - e.g., Windows NT 10.0
  • Device information - Mobile, tablet identifiers
  • Compatibility tokens - Mozilla/5.0 (historical)

Example User Agents

Chrome on Windows

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

Safari on iPhone

Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1

Firefox on macOS

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:120.0) Gecko/20100101 Firefox/120.0

Why User Agents Matter

  • Website compatibility - Sites may serve different content based on browser
  • Analytics - Track visitor browser and device statistics
  • Feature detection - Determine browser capabilities
  • Security - Identify outdated browsers
  • Debugging - Troubleshoot browser-specific issues

Privacy Considerations

Your user agent can be used for browser fingerprinting. Consider using privacy-focused browsers or extensions that standardize user agents across users.