Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....pptx" , com . aspose . slides . SaveFormat . Pptx ); } finally...FileOutputStream ( "Save_As_Stream_out.pptx" ); pres . save ( os , com ...