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....thumbnail from the first slide to PNG pres -> get_Slides () -> idx_get...-> Save ( path + u "Slide_0.png" , System :: Drawing :: Imaging...