The bleed area is used to align objects that you want to extend all the way to the trimline of your printed document. The Bleed area allows you to print objects that are arranged at the outer edge of the defined page size. For a page of the required dimensions, if an object is positioned at its edge, some white may appear at the edge of the printed area due to slight misalignment during printing. For this reason, you should position an object that is at the edge of the page of the required dimensions a little away from the edge, and trim after printing.