2.0 http://www.w3.org/2005/Atom – Convert PowerPoint to Xlsx, PPTX to Xlsx FREE Converter or Swift SDK https://products.aspose.cloud/total/swift/conversion/pptx-to-Xlsx/ Recent content in Convert P......Convert PowerPoint to XLSX, PPTX to XLSX FREE Converter or Swift...x-to-xlsx/ Recent content in Convert PowerPoint to XLSX, PPTX...