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🔒 Runs in your browser — nothing is uploaded✓ Free, no signup

User Agent Parser

Shows your own user agent, or paste any User-Agent string from logs or analytics to see the browser, operating system, device and engine it describes.

User agent string

Examples:

When should you use the User Agent Parser?

  • Understanding user agents in server logs or error reports
  • Checking whether traffic comes from a bot or a script
  • Finding your own browser version for a bug report

How to use the User Agent Parser

  1. 1

    See your own

    Your browser's user agent is filled in and parsed automatically.

  2. 2

    Paste another

    Paste a User-Agent from logs, or try one of the examples.

  3. 3

    Read the result

    Browser, engine, OS, device type, model and CPU architecture are shown.

  4. 4

    Copy JSON

    Copy the full parsed result as JSON.

Examples

Safari on iPhone

User agent

Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1 Mobile/15E148 Safari/604.1

Parsed

Browser   Mobile Safari 18.1
Engine    WebKit 605.1.15
OS        iOS 18.1
Device    Mobile · Apple iPhone

Common errors and how to fix them

Windows 11 shows as Windows 10
Browsers still send Windows NT 10.0 on Windows 11, so the user agent can't tell them apart.
The version looks rounded, like 131.0.0.0
Chrome reduces user-agent detail for privacy. Exact versions are only available through Client Hints.
Related tools: Screen Resolution Checker · HTTP Status Codes · URL Parser

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User Agent Parser FAQ

A string your browser sends with every request (the User-Agent header) describing the browser, engine and operating system.

Yes. Any client can send any user agent, so use it for analytics and debugging, not security.

For historical compatibility — early sites only served full pages to Netscape (Mozilla), so other browsers copied the prefix.

By common markers such as bot, crawler, spider, curl, wget and python-requests in the string.

The open-source UAParser.js library, running in your browser.

No. Everything runs in your browser, so your user agent never leaves your device.