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Change desktop screen resolution for Puppeteer tests

Learn how to change the desktop screen resolution for your Puppeteer tests across browser/OS combinations on BrowserStack.

By default, all Puppeteer tests on desktop browsers run on a OS level screen resolution of 1920x1080. You can use our custom resolution capability which lets you specify a different screen resolution for your tests.

Protip: Changing the screen resolution is an OS level setting for the screen. This would not change the size of viewport. You can change the viewport using the Puppeteer command page.setViewport.
Capability Description Expected values
resolution Set the resolution of your desktop OS before beginning your test A string. Default resolution is 1920x1080

Supported resolutions:

Windows (10, 11): 1024x768, 1280x800, 1280x1024, 1366x768, 1440x900, 1680x1050, 1600x1200, 1920x1200, 1920x1080, 2048x1536, 2560x1600, 2560x1920 and 3840x2160

OS X: 1024x768, 1280x960, 1280x1024, 1600x1200 , 1920x1080, 2560x1440, 2560x1600 and 3840x2160

For example, refer to the sample of setting resolution to be 1024x768:

const caps = {
    'resolution': '1024x768',  // You can choose any supported resolution as per the selected OS and OS version
};
Note: You can set the screen resolution only at the start of a test. Resolution cannot be changed during test runtime.

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