DRPU Excel Converter Software Screenshots Click on 'Add Files' to add excel files for converting XLSX into XLS or XLS into XLSX file. Select conversion settings, other settings options as per your requirement and click on 'Start Conversion' button. Wizard shows conversion process. You can skip any file during conversion process using 'Skip File' button. You can view the list of converted files, not converted files, and files of same extension. When you click “Not Converted Files” tab, list of not converted files will display.