User-Agent Parser

Parse User-Agent

Identify browser, OS, device, engine, and Bot characteristics.

Parse User-Agent online, see what environment the visitor is actually on.

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Use Cases

When seeing a UA string in server logs, first parse into readable info before continued troubleshooting
Troubleshoot frontend page compatibility issues on specific browsers or systems by confirming UA info
Identify crawlers, bots, or abnormal access requests to distinguish real users from automated traffic
Optimize device adaptation and content distribution strategies based on UA info to improve user experience

Features

Browser, OS, device identified at once: No more guessing from experience
Log analysis more useful: Abnormal traffic, compatibility issues, and access distribution can all check environment first
Structured reading made easier: Avoid time waste from manually parsing lengthy UA strings
Results reusable: Convenient to sync with dev, QA, and product for environment reproduction

How to Use

1.Copy User-Agent string from browser or logs
2.Paste into input box, tool automatically parses and structurally displays each field
3.View browser engine, operating system, device type, and version information
4.Adjust compatibility strategies, filter rules, or content distribution logic based on parsing results

FAQ

What's the main use of User-Agent parsing?

It's most commonly used to identify visitors' browsers, operating systems, and device types. Very practical for compatibility debugging, traffic analysis, and abnormal request troubleshooting.

Is it suitable for troubleshooting browser compatibility issues?

Yes. Many frontend compatibility issues require first confirming the user's actual browser engine, version, and system environment.

Can it be used to analyze UA strings in logs?

Yes. Paste User-Agent text from logs directly to faster understand device and browser info, saving manual comparison time.

Why do UA strings look so complex?

Because they often contain historical compatibility fields, browser identifiers, and platform information. A parser helps structure this information for easier reading.