The invention provides a printing control apparatus having a function for performing preview displaying prior to printing document data outputted by an application program. The apparatus comprises: a generator for generating a preview image based on the document data in accordance with a print setting; and a preview display controller for displaying, together with the preview image, a user interface which displays an option in a predetermined item of a print setting within a scope corresponding to a current print setting, when the predetermined item of the print setting corresponding to the preview image is to be changed. The printing control apparatus enables printing of the document data in accordance with the print setting changed through the user interface.