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User Agent Parser

Automatically shows your user agent and parses any UA string into browser, OS, device and engine details.

Last updated: 2026/10/16 Developer Feedback & bug reports

Your browser's user agent has been loaded automatically. Overwrite it to test a different UA.

Parse Result

Enter a UA string to see the parsed result here.

How to Use

1

Check Your UA

When the page loads, your browser's user agent is automatically loaded and parsed instantly.

2

Parse Any UA

Paste the user agent string you want to inspect into the field and press "Parse" to update the result.

3

Use the Result

Review browser, OS, device type and engine, then use "Copy Result" to grab it as text if needed.

About User Agent Parsing

A user agent is the self-identifying string a browser sends to a web server. It contains information about the browser type and version, the operating system, and the device. This tool parses the UA string and breaks it down into readable details such as browser, OS, device type and rendering engine. All processing happens in your browser and the string you enter is never sent to any server.

Features

  • Auto-detect Your UAJust open the page and your environment's user agent is fetched and parsed automatically.
  • Parse Any UAPaste a UA string from another device or bot to instantly break down browser, OS and device.
  • Detailed BreakdownSee browser, version, engine, OS, device type and CPU all in one clear view.
  • Privacy ProtectedAll processing happens in your browser. UA strings are never sent to any server.

Use Cases

  • Check your own browser and OS version
  • Identify UA strings recorded in access logs
  • Verify responsive / device-branching behavior
  • Detect bots and crawlers from their UA
  • Gather environment info for support requests

FAQ

What is a user agent?
It is an identifying string a browser sends when accessing a web server. It contains information such as browser name, version, OS and device, which servers use to optimize the content they return.
Is the UA string I enter sent to a server?
No. All parsing happens entirely in your browser. The string you enter is never sent to us or any external server.
Why does the device type show as "Desktop"?
A UA without smartphone- or tablet-specific identifiers is treated as a desktop environment, because most desktop browser UAs do not include an explicit device type.
Can I get all information accurately from a UA?
UA strings can be spoofed or abbreviated, so they do not always match the real environment. For privacy, versions are increasingly rounded or omitted. Use the result as a reference only.
Can I use it on my smartphone?
Yes. It works on all devices including smartphones, tablets and PCs. No registration or installation required.

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