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