UA Parser

User-Agent Parser

Decode browser and device strings instantly. Get browser name/version, operating system, device class, and basic bot detection hints.

Input User-Agent

Client-side only. No server processing.

Parsed Output

Browser

—

Version

—

OS

—

Device Class

—

Bot Hints

—

{
  "browser": "",
  "version": "",
  "os": "",
  "deviceClass": "",
  "bot": {
    "isBotLike": false,
    "signals": []
  },
  "raw": ""
}

FAQ

What is a User-Agent string?

A User-Agent string identifies the browser/app, version, operating system, and often device category that made a request.

Can this parser detect bots?

It provides basic bot hints using common crawler and automation keywords. For production bot defense, combine with behavioral and network signals.

Is parsing done on a server?

No. Everything runs locally in your browser using JavaScript.