In an enlarged/reduced printout in which the document margin of an application setting is maintained, a margin considering the enlargement ratio or reduction ratio needs to be set again in the application at the time of printing. An information processing apparatus that executes the application performs the following process: a paper size and margin size for printing a document are designated. First paper information based on an original size and margin size set by the application, and second paper information based on the designated paper size and margin size, which are generated by executing a plug-in program for the application, are acquired. When printing a document to match the paper size, print data is enlarged or reduced based on the first paper information and the second paper information while the margin size set by the application is maintained.