To provide an information processor, and information processing program and a storage medium, for appropriately performing storage of model-specific print setting information of a plurality of printers and print setting thereof.

In a print system 1, a host computer PC stores compression setting data files 30 obtained by compressing a specific setting data file for each model including a model-specific print setting item, a setting value or the like in a predetermined compression system in a storage part 13. Of the compression setting data files 30, a specific setting data file corresponding to the model of a printer Pr as a print destination is decompressed in a decompression module 23, a specific print setting interface screen corresponding to the decompressed specific setting data file is displayed in an interface module 21, and print setting is performed in an equipment information acquisition module 22 according to a setting content on the specific print setting interface screen.