By default, all software supports multiple file extensions. GNU Emacs supports at least 33 different file extensions. The basic files that GNU Emacs supports are .ASPX. However, not all of the extensions listed on the list are always used to save the effects of work in GNU Emacs. Very often, files with such extensions are used as source data files used by GNU Emacs.
GNU Emacs 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 GNU Emacs and try to save it in another file format, also supported by GNU Emacs.