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User Agent Parser Guide
Learn when to use User Agent Parser, how to use it correctly, and how to avoid common mistakes.
What this guide covers
Use this user agent parser to identify browser, version, rendering engine, operating system, device type, and basic bot signals from a raw user agent string. It is useful for debugging analytics, logs, request headers, and tracking data.
This guide explains when to use User Agent Parser, how to get a cleaner result,
and which mistakes to avoid before moving on to related tools or the main tool page.
Why use User Agent Parser
Turns raw user agent strings into readable device and browser details quickly.
Useful for analytics checks, logs, debugging, and request inspection.
Helps identify browser, OS, and device type without manual reading.
Good for one-off checks on copied UA strings.
Runs directly in the browser with structured output.
How to use User Agent Parser
Paste the user agent string into the input box.
Run the tool to parse the details.
Review the detected browser, OS, engine, and device information.
Copy the result if needed for notes, support, or debugging.
Best use cases
Checking browser and OS data in analytics or logs.
Debugging copied user agent headers from requests.
Identifying whether a UA string looks like a browser, device, or bot.
Common mistakes
The user agent string is incomplete or truncated.
Fix: Paste the full raw user agent string before parsing.
A highly unusual custom UA is only partly identified.
Fix: Treat the output as approximate when the source string is nonstandard.
The user expects IP or network information from a UA string.
Fix: Remember that a user agent string describes client software and device context, not network identity.
Use the tool
Ready to run User Agent Parser? Open the main tool page to enter your input,
generate the result, and copy or download the output.