Configuring the browser

Eyes-Testcafe will take a screenshot of the page in the requested browser, the browser can be set in the applitools.config.js or by passing it to eyes.open.

Possible values are:

• chrome
• firefox
• edgechromium
• edgelegacy
• ie10
• ie11
• safari
• chrome-one-version-back
• chrome-two-versions-back
• firefox-one-version-back
• firefox-two-versions-back
• safari-one-version-back
• safari-two-versions-back
• edgechromium-one-version-back
• edgechromium-two-versions-back

Previous browser versions

*-one-version-back and *-two-versions-back are relative to the version of the same browser. For example, if chrome refers to version 79, then chrome-one-version-back will be Chrome 78 and chrome-two-versions-back will be Chrome 77.

Getting a screenshot of multiple browsers in parallel

You can send an array of browsers.

Example

eyes.open({
  ...
  browser: [
    {width: 800, height: 600, name: 'firefox'},
    {width: 1024, height: 768, name: 'chrome'},
    {width: 1024, height: 768, name: 'ie11'}
  ]
}

Note: that if only a single browser is set, then Eyes-Testcafe changes the TestCafe's browser viewport to that size.

Device emulation

To enable Chrome's device emulation, you can send a device name and screen orientation.

Example

eyes.open({
  // ...
  browser: {
    deviceName: 'iPhone 16',
    screenOrientation: 'landscape',
    name: 'chrome' // optional, just to make it explicit this is browser emulation and not a real device. 
	               // Only Chrome is supported for device emulation.
  }
}

Possible values for screen orientation are landscape and portrait; if no value is specified, the default is portrait.

For a list of supported devices, see Chrome mobile emulation .

In addition, you can use Chrome's device emulation with custom viewport sizes, pixel density, and mobile mode, by passing deviceScaleFactor and mobile in addition to width and height.

Example

eyes.open({
  // ...
  browser: {
    width: 800,
    height: 600,
    deviceScaleFactor: 3,
    mobile: true,
    name: 'chrome' // optional, just to make it explicit this is browser emulation and not a real device. 
	               // Only Chrome is supported for device emulation.
  }
}

iOS device

eyes.open({
  // ...
  browser: {
    iosDeviceInfo: {
      deviceName: 'iPhone XR',
      screenOrientation: 'landscape', // optional, default: 'portrait'
      iosVersion: 'latest' // optional, default: undefined (i.e. the default is determined by the Ultrafast Grid)
    },
  }
})

For a list of supported devices, see Chrome mobile emulation .

Possible values for iosVersion are:

• 'latest' - the latest iOS version that's supported by the UFG
• 'latest-1' - one version prior to the latest version
• undefined - the UFG's default