What Is My User Agent

Frequently asked questions

What is a user agent string?

A line of text your browser sends with every request, identifying itself, its rendering engine, and your operating system. Websites use it to serve compatible content or gather basic analytics.

How accurate is the parsed browser and OS info?

It's parsed directly from your own user agent string, so it's as accurate as what your browser reports. Some browsers deliberately mask parts of it for privacy, which can make detection less precise.

Why would I need to check my user agent?

Common uses include debugging browser-specific issues, checking what a site or API sees you as, or confirming an app is being tested from the right device and browser combination.

Is my user agent string logged or stored?

No. It's only parsed and displayed for this page load — nothing is saved, and no account is needed.

Do I need to install anything or sign up?

No. Just open the page — no software install, no account, no email required.