By default, all software supports multiple file extensions. NFO viewer supports at least 1 different file extensions. The basic files that NFO viewer supports are .NFO. However, not all of the extensions listed on the list are always used to save the effects of work in NFO viewer. Very often, files with such extensions are used as source data files used by NFO viewer.
NFO viewer can be used to convert file formats between the file extensions listed below. You can open a file with one of the file extensions below via NFO viewer and try to save it in another file format, also supported by NFO viewer.