Hi Sean,
Thanks for using Syncfusion Product.
At present we do support converting pages of the PdfDocument to Image using Essential PDF Viewer. We have created a Knowledge Base for illustrating this feature, please refer to the same with the link below.
http://www.syncfusion.com/kb/3738/how-to-export-the-pdf-pages-to-images-in-asp-netclassic
Thanks,
Balasubramanian