By default, all software supports multiple file extensions. StuffIt supports at least 37 different file extensions. The basic files that StuffIt supports are .7Z. However, not all of the extensions listed on the list are always used to save the effects of work in StuffIt. Very often, files with such extensions are used as source data files used by StuffIt.
StuffIt 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 StuffIt and try to save it in another file format, also supported by StuffIt.