About the User Agent Detector Tool

This free tool helps you identify and analyze browser user agent strings. A user agent is a string of text that web browsers and other applications send to websites to identify themselves.

Features:

• Current Browser Detection: Automatically displays and analyzes your current browser's user agent
• Custom Analysis: Enter any user agent string to identify browser, OS, and device information
• Predefined Examples: Try common user agents from various browsers and devices
• Detailed Breakdown: Get complete information about browser, rendering engine, operating system, and device

Understanding User Agents

A user agent string typically contains information about:

• Browser: The name and version of the web browser
• Rendering Engine: The core software that interprets HTML and CSS (e.g., WebKit, Gecko, Blink)
• Operating System: The OS and version the browser is running on
• Device: Information about the hardware, especially for mobile devices

Why User Agents Matter

User agent information is important for:

• Web developers testing browser compatibility
• Website analytics and visitor tracking
• Detecting bots and automated systems
• Delivering device-appropriate content
• Troubleshooting browser-specific issues

User Agent Format

Most modern user agent strings follow a similar pattern:

Mozilla/5.0 (platform; details) rendering_engine browser_details

For example:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36

This indicates:

• Platform: Windows 10 64-bit
• Rendering engine: AppleWebKit/537.36
• Browser: Chrome version 100.0.4896.127