There could be various scenarios when you need to convert PowerPoint PPT or PPTX to JPG images. For example, you may need to slide show the PPT/PPTX presentation in read-only mode within your application or you may want to generate the thumbnail for every slide of the PowerPoint presentation and etc. In order to automate PowerPoint to JPG conversion, I’ll show you how to convert PPT or PPTX slides to JPG images programmatically in C# .