Designate the width of the browser window. The width is 1024 by default, but can be set to anywhere between 1 to 1920.
$height
—
integer
Designate the height of the browser window. The height is 768 by default, but can be set to anywhere between 1 to 1080.
$delay
—
integer
Tell URL Screenshot to wait x milliseconds before capturing the webpage. Sometimes pages take longer to load, so you may need to delay the capture in order to make sure the page is rendered before the screenshot is taken. The delay must be an integer between 0 and 10000.