Check Your Browser's User Agent String

What is a User Agent?

A user agent string identifies your browser to websites. It contains:

Browser name and version

Operating system

Device type

Rendering engine

User Agent Components

Browser Information

Browser name (Chrome, Firefox, Safari)

Version number

Build information

Operating System

OS name (Windows, macOS, Linux)

Version

Architecture (32/64 bit)

Device Information

Device type (desktop, mobile, tablet)

Device model (for mobile)

Screen information

Why User Agents Matter

For Developers

Deliver optimized content

Debug browser-specific issues

Implement feature detection

For Users

Understand what sites see

Troubleshoot access issues

Privacy awareness

Common User Agent Examples

Chrome on Windows

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36...

Safari on iPhone

Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X)...

Firefox on Mac

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0)...

User Agent Spoofing

Some users change their user agent to:

Access mobile sites on desktop

Bypass browser restrictions

Test responsive designs

Privacy protection

Privacy Considerations

User agents can be used for:

Browser fingerprinting

Tracking across sites

Targeted content

Access restrictions

Check your user agent and understand your digital identity!