The ua-parser-js package is a utility for parsing user agent strings. It can be used to extract detailed information about the browser, engine, OS, CPU, and device from the user agent string provided by the client's browser.

What are ua-parser-js's main functionalities?

Browser Detection

This feature allows you to detect the browser name and version from the user agent string.

const UAParser = require('ua-parser-js');
const parser = new UAParser();
const browser = parser.getBrowser();
console.log(browser);

Operating System Detection

This feature enables you to determine the operating system and its version from the user agent string.

const UAParser = require('ua-parser-js');
const parser = new UAParser();
const os = parser.getOS();
console.log(os);

Device Detection

With this feature, you can identify the device type, vendor, and model from the user agent string.

const UAParser = require('ua-parser-js');
const parser = new UAParser();
const device = parser.getDevice();
console.log(device);

Engine Detection

This feature allows you to extract the layout engine name and version from the user agent string.

const UAParser = require('ua-parser-js');
const parser = new UAParser();
const engine = parser.getEngine();
console.log(engine);

CPU Architecture Detection

This feature provides information about the CPU architecture from the user agent string.

const UAParser = require('ua-parser-js');
const parser = new UAParser();
const cpu = parser.getCPU();
console.log(cpu);

Other packages similar to ua-parser-js

Readme

Source

UAParser.js

A JavaScript-based User-Agent string parser. Can be used either in browser (client-side) or in node.js (server-side) environment. Also available as jQuery/Zepto plugin, Bower/Meteor package, & RequireJS/AMD module. This library aims to identify detailed type of web browser, layout engine, operating system, cpu architecture, and device type/model, entirely from user-agent string with a relatively small footprint (~17KB when minified / ~6KB gzipped). Written in vanilla JavaScript, which means it doesn't require any other library and can be used independently. However, it's not recommended to use this library as browser detection since the result may not be more accurate than using feature detection.

Author : Faisal Salman <f@faisalman.com>
Demo : http://faisalman.github.io/ua-parser-js
Source : https://github.com/faisalman/ua-parser-js

Constructor

new UAParser([uastring][,extensions])
- returns new instance
UAParser([uastring][,extensions])
- returns result object { ua: '', browser: {}, cpu: {}, device: {}, engine: {}, os: {} }

Methods

getBrowser()
- returns { name: '', version: '' }

# Possible 'browser.name':
2345Explorer, 360 Browser, Amaya, Android Browser, Arora, Avant, Avast, AVG,
BIDUBrowser, Baidu, Basilisk, Blazer, Bolt, Brave, Bowser, Camino, Chimera,
Chrome Headless, Chrome WebView, Chrome, Chromium, Comodo Dragon, Dillo,
Dolphin, Doris, Edge, Epiphany, Facebook, Falkon, Fennec, Firebird, Firefox,
Flock, GSA, GoBrowser, ICE Browser, IE, IEMobile, IceApe, IceCat, IceDragon,
Iceape, Iceweasel, Iridium, Iron, Jasmine, K-Meleon, Kindle, Konqueror,
LBBROWSER Line, Links, Lunascape, Lynx, MIUI Browser, Maemo Browser, Maemo,
Maxthon, MetaSr Midori, Minimo, Mobile Safari, Mosaic, Mozilla, NetFront,
NetSurf, Netfront, Netscape, NokiaBrowser, Oculus Browser, OmniWeb,
Opera Coast, Opera Mini, Opera Mobi, Opera Tablet, Opera, PaleMoon, PhantomJS,
Phoenix, Polaris, Puffin, QQ, QQBrowser, QQBrowserLite, Quark, QupZilla,
RockMelt, Safari, Sailfish Browser, Samsung Browser, SeaMonkey, Silk, Skyfire,
Sleipnir, Slim, SlimBrowser, Swiftfox, Tizen Browser, UCBrowser, Vivaldi,
Waterfox, WeChat, Yandex, baidu, iCab, w3m, Whale Browser...

# 'browser.version' determined dynamically

getDevice()
- returns { model: '', type: '', vendor: '' }

# Possible 'device.type':
console, mobile, tablet, smarttv, wearable, embedded

# Possible 'device.vendor':
Acer, Alcatel, Amazon, Apple, Archos, Asus, BenQ, BlackBerry, Dell, Essential,
GeeksPhone, Google, HP, HTC, Huawei, Jolla, Lenovo, LG, Meizu, Microsoft, Motorola,
Nexian, Nintendo, Nokia, Nvidia, OnePlus, Ouya, Palm, Panasonic, Pebble, Polytron,
RIM, Samsung, Sharp, Siemens, Sony[Ericsson], Sprint, Xbox, Xiaomi, ZTE, ...

# 'device.model' determined dynamically

getEngine()
- returns { name: '', version: '' }

# Possible 'engine.name'
Amaya, Blink, EdgeHTML, Gecko, Goanna, iCab, KHTML, Links, Lynx, NetFront,
NetSurf, Presto, Tasman, Trident, w3m, WebKit

# 'engine.version' determined dynamically

getOS()
- returns { name: '', version: '' }

# Possible 'os.name'
AIX, Amiga OS, Android, Arch, Bada, BeOS, BlackBerry, CentOS, Chromium OS,
Contiki, Fedora, Firefox OS, FreeBSD, Debian, DragonFly, Fuchsia, Gentoo, GNU,
Haiku, Hurd, iOS, Joli, KaiOS, Linpus, Linux, Mac OS, Mageia, Mandriva, MeeGo,
Minix, Mint, Morph OS, NetBSD, Nintendo, OpenBSD, OpenVMS, OS/2, Palm, PC-BSD,
PCLinuxOS, Plan9, PlayStation, QNX, RedHat, RIM Tablet OS, RISC OS, Sailfish,
Series40, Slackware, Solaris, SUSE, Symbian, Tizen, Ubuntu, Unix, VectorLinux,
WebOS, Windows [Phone/Mobile], Zenwalk, ...

# 'os.version' determined dynamically

getCPU()
- returns { architecture: '' }

# Possible 'cpu.architecture'
68k, amd64, arm[64], avr, ia[32/64], irix[64], mips[64], pa-risc, ppc, sparc[64]

getResult()
- returns { ua: '', browser: {}, cpu: {}, device: {}, engine: {}, os: {} }
getUA()
- returns UA string of current instance
setUA(uastring)
- set UA string to parse
- returns current instance

Example

<!doctype html>
<html>
<head>
<script src="ua-parser.min.js"></script>
<script>

    var parser = new UAParser();

    // by default it takes ua string from current browser's window.navigator.userAgent
    console.log(parser.getResult());
    /*
        /// this will print an object structured like this:
        {
            ua: "",
            browser: {
                name: "",
                version: ""
            },
            engine: {
                name: "",
                version: ""
            },
            os: {
                name: "",
                version: ""
            },
            device: {
                model: "",
                type: "",
                vendor: ""
            },
            cpu: {
                architecture: ""
            }
        }
    */

    // let's test a custom user-agent string as an example
    var uastring = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.2 (KHTML, like Gecko) Ubuntu/11.10 Chromium/15.0.874.106 Chrome/15.0.874.106 Safari/535.2";
    parser.setUA(uastring);

    var result = parser.getResult();
    // this will also produce the same result (without instantiation):
    // var result = UAParser(uastring);

    console.log(result.browser);        // {name: "Chromium", version: "15.0.874.106"}
    console.log(result.device);         // {model: undefined, type: undefined, vendor: undefined}
    console.log(result.os);             // {name: "Ubuntu", version: "11.10"}
    console.log(result.os.version);     // "11.10"
    console.log(result.engine.name);    // "WebKit"
    console.log(result.cpu.architecture);   // "amd64"

    // do some other tests
    var uastring2 = "Mozilla/5.0 (compatible; Konqueror/4.1; OpenBSD) KHTML/4.1.4 (like Gecko)";
    console.log(parser.setUA(uastring2).getBrowser().name); // "Konqueror"
    console.log(parser.getOS());                            // {name: "OpenBSD", version: undefined}
    console.log(parser.getEngine());                        // {name: "KHTML", version: "4.1.4"}

    var uastring3 = 'Mozilla/5.0 (PlayBook; U; RIM Tablet OS 1.0.0; en-US) AppleWebKit/534.11 (KHTML, like Gecko) Version/7.1.0.7 Safari/534.11';
    console.log(parser.setUA(uastring3).getDevice().model); // "PlayBook"
    console.log(parser.getOS())                             // {name: "RIM Tablet OS", version: "1.0.0"}
    console.log(parser.getBrowser().name);                  // "Safari"

</script>
</head>
<body>
</body>
</html>

Using node.js

$ npm install ua-parser-js

var http = require('http');
var parser = require('ua-parser-js');

http.createServer(function (req, res) {
    // get user-agent header
    var ua = parser(req.headers['user-agent']);
    // write the result as response
    res.end(JSON.stringify(ua, null, '  '));
})
.listen(1337, '127.0.0.1');

console.log('Server running at http://127.0.0.1:1337/');

Using requirejs

requirejs.config({
    baseUrl : 'js/lib', // path to your script directory
    paths   : {
        'ua-parser-js' : 'ua-parser.min'
    }
});

requirejs(['ua-parser-js'], function(UAParser) {
    var parser = new UAParser();
    console.log(parser.getResult());
});

Using CDN

<script src="https://cdn.jsdelivr.net/npm/ua-parser-js@0/dist/ua-parser.min.js"></script>

Using bower

$ bower install ua-parser-js

Using meteor

$ meteor add faisalman:ua-parser-js

Using TypeScript

$ npm install --save @types/ua-parser-js
# Download TS type definition from DefinitelyTyped repository:
# https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/ua-parser-js

Using jQuery/Zepto ($.ua)

Although written in vanilla js (which means it doesn't depends on jQuery), this library will automatically detect if jQuery/Zepto is present and create $.ua object based on browser's user-agent (although in case you need, window.UAParser constructor is still present). To get/set user-agent you can use: $.ua.get() / $.ua.set(uastring).

// In browser with default user-agent: 'Mozilla/5.0 (Linux; U; Android 2.3.4; en-us; Sprint APA7373KT Build/GRJ22) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0':

// Do some tests
console.log($.ua.device);           // {vendor: "HTC", model: "Evo Shift 4G", type: "mobile"}
console.log($.ua.os);               // {name: "Android", version: "2.3.4"}
console.log($.ua.os.name);          // "Android"
console.log($.ua.get());            // "Mozilla/5.0 (Linux; U; Android 2.3.4; en-us; Sprint APA7373KT Build/GRJ22) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0"

// reset to custom user-agent
$.ua.set('Mozilla/5.0 (Linux; U; Android 3.0.1; en-us; Xoom Build/HWI69) AppleWebKit/534.13 (KHTML, like Gecko) Version/4.0 Safari/534.13');

// Test again
console.log($.ua.browser.name);     // "Safari"
console.log($.ua.engine.name);      // "Webkit"
console.log($.ua.device);           // {vendor: "Motorola", model: "Xoom", type: "tablet"}
console.log(parseInt($.ua.browser.version.split('.')[0], 10));  // 4

// Add class to <body> tag
// <body class="ua-browser-safari ua-devicetype-tablet">
$('body').addClass('ua-browser-' + $.ua.browser.name + ' ua-devicetype-' + $.ua.device.type);

Extending regex patterns

UAParser([uastring,] extensions)

Pass your own regexes to extend the limited matching rules.

// Example:
var myOwnRegex = [[/(myownbrowser)\/([\w\.]+)/i], [UAParser.BROWSER.NAME, UAParser.BROWSER.VERSION]];
var myParser = new UAParser({ browser: myOwnRegex });
var uaString = 'Mozilla/5.0 MyOwnBrowser/1.3';
console.log(myParser.setUA(uaString).getBrowser());   // {name: "MyOwnBrowser", version: "1.3"}

Development

Contribute

Fork and clone this repository
Make some changes as required
Write a unit test to showcase your feature
Run the test suites to make sure the changes you made didn't break anything $ npm run test
Commit and push to your own repository
Submit a pull request to this repository under develop branch
Profit? $$$

Build

Build a minified & packed script

$ npm run build

Donate

Do you use & like UAParser.js but you don’t find a way to show some love? If yes, please consider donating to support this project. Otherwise, no worries, regardless of whether there is support or not, I will keep maintaining this project. Still, if you buy me a cup of coffee I would be more than happy though :)

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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Last updated on 12 Feb 2021

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Install

ua-parser-js