The invention relates to an image forming apparatus, and a technology which can improve user operability on setting images of the image forming apparatus. The image forming apparatus includes a switching operation unit switching a display mode of a setting screen between first and second display modes. A first display screen in a first display mode includes an icon display area displaying icons arranged in a predetermined direction and corresponding to function buttons for setting each function, and a first function button display area displaying some of the function buttons corresponding to some of the icons specified by a range specification unit. The function buttons are classified into groups according to their function attribute. A second display screen in the second display mode includes a group display instruction area provided with group specification buttons for receiving input of a group display instruction to display function buttons belonging to a specific group among the groups, and a second function button display area displaying the function buttons belonging to the specific group among the function buttons.