How do I embed thumbnails in PDF?

Q: How do I embed thumbnails in PDF?
A: You can use PDFNet SDK ( to convert PDF
pages to images (or thumbnails) and these images can be embedded in

For an example of how to render PDF pages, please take a look at
PDFDraw sample project (

Once you have a PDF thumbnail (pdfdraw.GetBitmap() ->
System.Drawing.Bitmap) you can embed it in the document with
pdftron.PDF.Image.Create() method.

To associate this PDF image with a page use the following line:

page.GetSDFObj().Put("Thumb", image.GetSDFObj());

Similarly you can call PDFDoc.GenerateThumbs(max_dimension) to embed thumbnails in all pages of the document: