User-Agent String Parser

Inspect any HTTP User-Agent string (or your current browser UA) for browser, OS, CPU architecture, and engine details.

Inspecting current User-Agent string...
Browser Name & Version —
Operating System & Build —
CPU Architecture —
Rendering Engine —
Device Category —
Auto-Detected on Load
Structured Metadata

Decoding HTTP User-Agent Headers

Every HTTP request includes a User-Agent header identifying the client application, operating system, hardware architecture, and rendering engine. This tool automatically reads your current browser's navigator.userAgent on page load and lets you test desktop, mobile, and crawler strings locally.