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Browser, Device & Viewport

The Browser, Device & Viewport tab in the Environment editor controls the platform configuration used when running your tests — including the browser, device profile, screen size, and timezone.

These settings help you verify that your application works correctly across different browsers, devices, and screen sizes.

Browser & version

Configure which browser engine TestOwl uses to execute your tests.

FieldDescription
BrowserSelect the browser engine to run your test on, such as Chrome, Firefox, Safari, or Edge.
ChannelSelect the browser release channel, such as Stable or Beta. Available options depend on the selected browser.
Browser VersionSelect a specific browser version or use the latest available version for the selected browser and channel.

Device & viewport

Configure the device profile and screen dimensions used during test execution.

FieldDescription
Device TypeSelect the device category: Desktop, Mobile, or Tablet.
Device PresetAvailable for Mobile and Tablet devices. Select a predefined device profile that automatically configures screen dimensions and orientation.
OrientationChoose between Portrait and Landscape. Changing orientation automatically adjusts the width and height values.
Width / HeightDefine the viewport dimensions in pixels. Desktop environments use 1920 × 1080 by default. Device presets automatically populate these values.

Timezone

Configure the timezone used by the browser during test execution.

This is useful when testing features that depend on time, such as:

  • Appointment scheduling.
  • Date and time formatting.
  • Relative timestamps like "2 hours ago".
  • Region-specific time-based behavior.

The configured timezone affects the browser session without changing the timezone settings on your own machine.

Next steps