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 Investigation https://docs.aspose.com/slides/net/picture-frame/...exported to PNG Bug https://docs.aspose.com/slides/java/powerpoint-charts/...