By default, all software supports multiple file extensions. Swift To-Do List supports at least 1 different file extensions. The basic files that Swift To-Do List supports are .STDL. However, not all of the extensions listed on the list are always used to save the effects of work in Swift To-Do List. Very often, files with such extensions are used as source data files used by Swift To-Do List.
Swift To-Do List 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 Swift To-Do List and try to save it in another file format, also supported by Swift To-Do List.