User agent parser

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About the User-Agent Parser

The User-Agent Parser identifies browser, engine and operating system from a UA string. It is a quick diagnostic for log analysis, customer support and bot detection.

How to use it

Paste one or more UA strings.
The parser breaks them into browser, OS and device type.
Copy the parsed rows.

Limitations

UA strings are easily spoofed. Use the parser for analytics, not for security decisions.

A User-Agent (UA** string is a dense, hard-to-read blob that every browser sends about itself. This parser unwraps it to tell you, at a glance, which browser, browser engine, operating system and device type produced that request.

You can feed it one string or several, and it turns each into a tidy row you can copy for your notes, reports or log-analysis work. That turns a wall of semicolon-separated tokens into something you can actually read.

How to Use the User-Agent Parser

Paste one or more User-Agent strings, one per line.
The tool breaks each string intobrowser, OS, engine and device type.
Copy the parsed rows for your logs, analytics or support notes.

Practical Use Cases

Make sense of raw web-server or CDN logs, answer customer support questions about which browser a visitor is using, spot device types while triaging analytics data, and sanity-check the clients hitting your API before writing more tooling around them.

User-Agent parsing — common questions

Can I trust the browser a UA string claims?

Mostly for analytics, but not for security. User-Agent strings are easily spoofed, so treat the detected browser as a hint for traffic analysis rather than as proof of identity.

Can I parse several strings at once?

Yes. Paste multiple User-Agent strings, one per line,and each is broken out into its own readable row.

Why would a log show an unfamiliar UA?

Bots, scripts and older tools send their own UA strings that do not look like a normal browser. Parsing them helps you tell a bot from a real visitor while reviewing your traffic.