here is an example - https://products.aspose.com/Total/net/conversion/docx-To-ppt/
However when I try To use it, at
// Load the content of the Word document To a Presentation
var pptPresentation = new Aspose.Slides.Pr…...Visio, PDF, CAD & several other categories in Web, Desktop or...Visio, PDF, CAD & several other categories in Web, Desktop or...