Merge XLSB to PPTX Online for Free. Free Online XLSB to PPTX Merger. Merge XLSB to Word, Excel, PPTX, PDF, JPG, HTML, ODS, SVG, XPS and more.... Upload your files, call Workbook.Combine method for merging...import Workbook workbook = Workbook( "Input.xlsx" ) workbook.combine(Workbook(...