Method, apparatus, computer product program and computer readable recording medium for confirming contents of edited file

摘要

An image forming apparatus, method, and computer program product, in which image data stored in a file can be printed in two printing modes when a sample printing mode is selected. A first page printing mode is a mode in which only a first page of a selected file is printed. A designated page range printing mode is a mode in which a designated page range of the selected file is printed in order of pages. A mismatch between the number of pages of the selected file and a designated page range is judged. When the mismatch arises, a warning is displayed on a display device of the image forming apparatus to give the warning to an operator.