What Is My User Agent
See your browser name and version, operating system, rendering engine and full user agent string the moment the page loads — detected locally.
Processed entirely in your browser — nothing you enter here is ever uploaded.
Result
About this tool
This page highlights your full user agent string — the identification line your browser sends with every request — and puts a one-click copy button right under it. Above the string, the same parser that support teams would run in their heads shows what it decodes to: your browser with its version, your operating system and the rendering engine.
The user agent is what you are usually asked for in bug reports, QA tickets and support chats, because it pins down the exact browser build a problem happened in. Modern user agent strings are deliberately confusing — every Chromium browser claims to be Chrome and Safari at once, and Safari on iPad may claim to be a Mac — which is why the decoded summary next to the raw string saves everyone a trip to a lookup table.
The string is read locally by your own browser via navigator.userAgent, with the parsed summary preferring the cleaner navigator.userAgentData API where it exists. Nothing is sent to any server, no IP lookup is made, and anything the browser refuses to reveal is shown as Unknown rather than guessed.
Example. The page reads navigator.userAgentData when present, otherwise parses the user-agent string, and fills browser name, version, OS, engine, and the raw agent string.
Limit. An unrecognized browser or OS is labeled Unknown, and no IP address is looked up.