User-Agent Parser
Your own user-agent is loaded below — or paste any UA string to decode its browser, OS and device. Nothing is sent to a server; parsing happens in your browser.
Browser
Unknown browser
Operating system
Unknown OS
Device
Desktop
Best-effort parse. User-agent strings are self-reported and easily spoofed — treat them as a hint, not proof.
What is a user-agent?
A user-agent is a string your browser sends with every request, identifying the browser, version, operating system and rendering engine. It’s self-reported — bots and privacy tools routinely change it — so treat it as a hint, never as proof of identity.
Related tools
- What Is My IP — your public IP and connection.
- AI robots.txt Generator — control AI crawler user-agents.
Frequently asked questions
▸ ▾ What does the user-agent parser do?
It decodes any user-agent string into the browser, operating system and device it represents.
▸ ▾ Can user-agents be faked?
Yes — a user-agent is client-supplied and easily spoofed, so don't rely on it for security decisions.