2.0 http://www.w3.org/2005/Atom High Code APIs & Free Apps for PowerPoint File Automation – Convert PPSX to Pptx in PHPhttps://products.aspose.com/slides/php-java/conversion/ppsx-to-Pptx/Recent con......Automation – Convert PPSX to PPTX in PHPhttps://products.aspose...ppsx-to-pptx/Recent content in Convert PPSX to PPTX in PHP on...