User-agent parser — browser, OS and device
Paste a User-Agent string and see the browser, engine, operating system and device class. It parses entirely in your browser (0 uploads, works offline).
How to use it
- Paste a User-Agent string.
- Read the parsed browser, engine, OS and device.
- Copy or Download the result.
FAQ
How do I parse a User-Agent string for free?
Paste it and this page identifies the browser and version, the rendering engine, the operating system and whether it is a desktop, mobile, tablet or bot — on your device with no upload.
Is my input uploaded anywhere?
No. Parsing runs entirely in your browser and nothing is transmitted or stored, which you can verify by turning off your Wi-Fi.
Why do User-Agent strings look so messy?
For historical compatibility, browsers include tokens from older browsers and engines. That is why a Chrome string mentions Mozilla, AppleWebKit and Safari; the parser untangles which one actually applies.
Can it detect bots?
Yes. Common crawler and bot signatures are recognised and reported as the bot device class.
Limits
Heuristic pattern matching; unusual, spoofed or brand-new User-Agent strings may be classified imperfectly.
Related
The email header analyzer inspects mail routing; the HAR analyzer summarises network captures.
Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.