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....Presentation ( srcFileName )) { //Saving the PPTX presentation to PPTX...PPTX format pres . Save ( destFileName , SaveFormat . Pptx );...