We are experiencing low image quality (pixelation/shadowing) when outputting a PPTX slide to JPEG. Can you help us understand the issue and how to get better quality.
Thanks for inquiring Aspose.Slides.
I like to share that you can improve the quality of generated thumbnail by increasing the imaging scaling factor or by setting the custom dimensions. Please visit this documentation link for your kind reference. Please share, if any thing further is needed in this regard.