Parse a User-Agent string online
Parse a User-Agent string: browser, engine, OS and device type, in your browser.
Local heuristic parsing. No data sent.
🔒 100% client-side — no data sent
Paste a User-Agent string and instantly identify the browser, rendering engine, operating system and device type. Handy for debugging logs, testing platform detection or analyzing traffic. Everything is parsed in your browser, with no data sent anywhere.
What is it for?
- ▸ Identify the browser and OS behind a server log entry
- ▸ Debug platform detection on the back-end
- ▸ Understand which device generated a suspicious request
- ▸ Check the User-Agent sent by a bot or crawler
FAQ
What is a User-Agent string?
It's a text sent by the browser or client with each HTTP request, describing the software, its version and the system in use.
Does the parser detect mobiles and tablets?
Yes. The tool distinguishes desktops, mobiles and tablets, and reports the device model when possible.
Where can I find my own User-Agent string?
In your browser console, type navigator.userAgent, or copy it from the headers of a network request.