By default, all software supports multiple file extensions. Post-It Notes supports at least 2 different file extensions. The basic files that Post-It Notes supports are .PWN. However, not all of the extensions listed on the list are always used to save the effects of work in Post-It Notes. Very often, files with such extensions are used as source data files used by Post-It Notes.
Post-It Notes 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 Post-It Notes and try to save it in another file format, also supported by Post-It Notes.