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Query the server-side information from the users agent data.
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Agent plugin for Craft CMS 3.x

Query the server-side information from the users agent data.

Table of Contents



Via compsoer:

composer require marknotton/agent

Or manually in your compsoer.json:

"require": {
  "marknotton/agent": "^1.1.4"


Perform a number of checks to determine wether the users browser type is a match. Returns boolean.

Example 1:

Returns true if current browser is either 'IE, Edge, or Firefox'

{{ craft.agent.check('ie', 'edge', 'firefox') }}

Example 2:

Returns true if current browser is greater than IE 9

{{ craft.agent.check('ie > 9') }}

Example 3:

Returns true if current browser is greater or equal to IE 9

{{ craft.agent.check('ie => 9') }}

Example 4:

Returns true if current browser is either, IE version 9, Chrome version 50 or above, or any version of Firefox

{{ craft.agent.check('ie 9', 'chrome > 49', 'firefox') }}


Redirect users if their current agent doesn't meet any of these conditions. Following the same syntax as the 'check' function, this will redirect users to a specific template. You can also pass in a status code too.

{% set criteria = [
  'ie 11',
  'chrome > 55',
  'firefox > 44',
  'safari >= 7',
  'edge >= 15',
  'opera > 50'
] %}

{{ craft.agent.redirect(criteria, 'no-support.twig', 302) }}


Returns a string in the format of data attributes containing the browser name and version number, platform and device type. Ideal for querying via Javascript or CSS. See the included agent.js file for more information.


{{ }}

Example Output:

data-browser="chrome 52"

Example Output: jQuery Usage

if ( $('html[data-browser^=chrome]').length ) {...}

Example Output: CSS Usage

html[data-browser^=chrome] {...}


Simply returns the name and version of the users browser.

Returns browser name and version number in an array

{{ craft.agent.full }}

Returns browser name

{{ }}

Returns version number

{{ craft.agent.full.version }}

Browser/platform version

MobileDetect recently added a version method that can get the version number for components. To get the browser or platform version you can use:

{% set browser = craft.agent.browser() }}
{% set version = craft.agent.version($browser) }}

{% set platform = craft.agent.platform() }}
{% set version = craft.agent.version($platform) }}

Note, the version method is still in beta, so it might not return the correct result.

Magic is-method

Magic method that does the same as the previous is() method:

{{ craft.agent.isAndroidOS() }}
{{ craft.agent.isNexus() }}
{{ craft.agent.isSafari() }}

Mobile detection

Check for mobile device:

{{ craft.agent.isMobile() }}
{{ craft.agent.isTablet() }}

Match user agent

Search the user agent with a regular expression:

{{ craft.agent.match('regexp') }}

Accept languages

Get the browser's accept languages. Example:

{% set languages = craft.agent.languages() %}
// ['nl-nl', 'nl', 'en-us', 'en']

Device name

Get the device name, if mobile. (iPhone, Nexus, AsusTablet, ...)

{{ craft.agent.device() }}

Operating system name

Get the operating system. (Ubuntu, Windows, OS X, ...)

{{ craft.agent.platform() }}

Browser name

Get the browser name. (Chrome, IE, Safari, Firefox, ...)

{{ craft.agent.browser() }}

Desktop detection

Check if the user is using a desktop device.

{{ craft.agent.isDesktop() }}

This checks if a user is not a mobile device, tablet or robot.

Phone detection

Check if the user is using a phone device.

{{ craft.agent.isPhone() }}

Robot detection

Check if the user is a robot. This uses jaybizzle/crawler-detect to do the actual robot detection.

{{ craft.agent.isRobot() }}

Robot name

Get the robot name.

{{ craft.agent.robot() }}


All Agent service methods are accessible without the need to define 'craft.'. So all of the functions above can be called like this too:

{{ agent.browser() }}


Agent comes complete with a Javascript class to help make it easier to query some of the user agent data.

You can include the agent.js like this:

{% do view.registerJsFile('@agent/assets/scripts/agent.js', true),
  {'position' : constant('\\yii\\web\\View::POS_HEAD')}

You can initialise it like this:

let agent = new Agent();

By default, we assume the Twig data function is defined in your HTML tag via Twig:

<html {{|default }}>

If you're using it on another tag, you'll need to define the element like this:

let agent = new Agent($('body')[0]);

Now you have access to these methods:

Function Return Example Description
agent.browser {name: "chrome", version: "66"} Gets the users browser name and version number
agent.viewport {width: 1345, height: 1321} Gets the users viewport width and height
agent.screen {pixelWidth: 2560, pixelHeight: 1440} Gets the users device resolution. This takes into account condensed pixels
agent.platform osx Gets the users platform type true Checks if the user is on a mobile device
agent.tablet true Checks if the user is on a tablet device
agent.desktop true Checks if the user is on a desktop
agent.touch true Checks if the users device supports touch input
agent.orientation landscape Checks the orientation of the users display/device
agent.notch left Checks if the users device has a notch, and tells you what side it's on

Orientation, Touch, and Notch data is stored in the DOM window as device. Referring to this will return something like this:

[orientation: "landscape", touch: true, type: "iphoneX", notched: true, notch: "left"]

All of the above methods are auto loaded when the Agent Class is initialised. Each method stores data to the DOM window. So rather than actioning each method when you need it, you can refer to the cached data in your Window. Meaning you can simply call browser in your script to get the data. You can disable this by passing in false as argument: new Agent(false).

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