âš¡ 100% In-Browser & Private: Your data never leaves your computer. Powered by Cloudflare Edge CDN.
ProWebTools v2.0
Free Online Developer Utilities
Network Info

Online User Agent String Parser & Device Inspector

Parse HTTP User-Agent header strings to identify browser names, software versions, operating systems, and device form factors.

Loading interactive interface...
Advertisement
AdSense Banner Slot (300x250 / 728x90 Auto Responsive)

How Web Servers Utilize User Agent Detection

Web analytics platforms and responsive proxies inspect the User-Agent header to deliver optimized assets, detect bot traffic, and troubleshoot browser-specific bugs.

This tool decodes complex UA strings into clear, structured attributes.

Frequently Asked Questions

What is a User Agent header?

A User Agent is an HTTP request header string that informs web servers about the client's browser application, operating system, vendor, and version.

Related Webmaster & SEO Tools

View all in Webmaster & SEO →