Patent ID: 8854674

Claim:
An image forming apparatus which is capable of performing preview display of an image on a display unit, comprising: a bird's eye preview unit configured to perform bird's eye preview display of the whole image by changing a size of the image to a size which enables the whole image to be displayed on the display unit, based on a printing resolution of the image, a display resolution of the display unit, sheet size information of the image, and display size information of the display unit; a real size preview unit configured to perform real size preview display of the image, in which a displayed image has a same size as a size of an image formed by printing the displayed image, based on the printing resolution of the image and the display resolution of the display unit; and a real size preview display area-setting unit configured to accept a setting of a preview display area of the image for being displayed by the real size preview display by said real size preview unit, which has been made on the image displayed by the bird's eye preview display by said bird's eye preview unit, wherein said real size preview unit displays an image within the area set by said real size preview display area-setting unit, on the display unit.