User Agent Parser
Parse user agent strings to identify browser, OS, and device. Free, fast, and works entirely in your browser with no sign-up required.
User Agent String
Paste a User Agent string above or click My Browser to detect your current browser.
About User Agent Strings
A User Agent string identifies the browser, OS, and device to web servers. It follows a legacy format: Mozilla/5.0 (OS info) Engine/version Browser/version. The “Mozilla/5.0” prefix is included by virtually all modern browsers for historical compatibility reasons.
Privacy First: All parsing happens locally in your browser. No UA strings are ever sent to any server.