Program options can be saved to file (and later re-loaded) via the Options button in the main window toolbar.
The resulting file contains all the settings accessible through the FolderSizes Program Options window, as well as those available within individual panes of the File Reporter window.
Please note that transient state information (such as window position, path histories, window layouts, etc.) are not saved to (and restored from) program option files, nor are ribbon bar customizations.
Note: Saving and loading of program options can also be triggered via the FolderSizes command line interface or scheduler.