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....$pres = new Presentation ( "transparency.pptx" ); try { $shape =...255 )); $pres -> save ( "transparency-2.pptx" , SaveFormat ::...