PPPraveena P Syncfusion Team July 26, 2016 04:43 PM UTC
Thank you for using Syncfusion Products.
At present we do not support exporting pages of the PDF document as images with custom zoom factor using PDF viewer WPF. As a workaround please use the ExportAsImage method in PdfLoadedDocument by providing custom size for an image to export.
Please find the code snippet for your reference.
PdfLoadedDocument pdf = newPdfLoadedDocument("example.pdf");