User Agent Parser Online Free — Decode Any UA

User Agent Parser — parse a User-Agent into browser, OS, device in your browser

User-Agent string

Browser

Engine

Device

CPU

Paste a User-Agent string to break it into parts

User Agent Parser Online

Updated 2026-07-09

Parse a User-Agent string online for free. Paste any UA string and SnapTools identifies the browser, rendering engine, operating system, device, and CPU architecture — laid out for easy reading. Everything runs in your browser, so the string you paste is never uploaded.

Every HTTP request carries a User-Agent header, but the raw string is a dense, historical mess that is hard to read at a glance. This tool breaks it into the parts that matter, so you can quickly see what a client claims to be when you are debugging content negotiation, reading analytics logs, or testing device-detection logic.

// how to use

1 Paste a User-Agent string into the input panel — for example your own from any request header.
2 SnapTools parses it and lists the browser, engine, OS, device, and CPU.
3 Copy the parsed result, or paste a different UA string to compare.

// examples

Desktop Chrome

Input

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Output

Browser:  Chrome 120.0.0.0
Engine:   Blink 120.0.0.0
OS:       Windows 10
Device:   Desktop / unknown
CPU:      amd64

iPhone Safari

Input

Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1

Output

Browser:  Mobile Safari 17.0
Engine:   WebKit 605.1.15
OS:       iOS 17.0
Device:   Apple iPhone mobile
CPU:      —

// common uses

Debugging why a browser or device is served the wrong content Reading User-Agent strings from server or analytics logs Checking how a device identifies itself Building or testing device-detection logic

// faq

No. Parsing runs entirely in your browser, so the string you paste never leaves your machine.

It breaks a User-Agent down into the browser and version, the rendering engine, the operating system and version, the device (vendor, model, type), and the CPU architecture when present.

It is sent with every request as the User-Agent header. You can read it in your browser's developer tools under the Network tab, or from any request log on your server.

Desktop browsers usually do not advertise a device model, so there is nothing to report. Mobile and tablet User-Agents typically include a vendor and model, which are shown when available.

It is a best-effort read of a self-reported string, which clients can spoof or freeze. It is great for analytics and debugging, but should not be your only signal for security decisions.

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Use this via API

Get a free API key →

curl -X POST https://snaptools.dev/api/v1/tools/user-agent-parser \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gec..."}'