User-Agent Parser

A User-Agent string describes the software making an HTTP request and may contain information about the browser, rendering engine, operating system, device class, or crawler. Parsing it helps investigate compatibility issues, interpret server logs, verify how a request identifies itself, and distinguish known search crawlers from ordinary browser traffic.

Paste the complete string to obtain a readable breakdown. User-Agent data is self-reported and can be modified or spoofed, so it must not be used alone for authentication, fraud prevention, or definitive bot detection. Modern browsers also reduce identifying detail for privacy, making feature detection and server-side evidence more reliable than assumptions based only on the parsed name.