Making a PDF output in raster format instead of vector using itextsharp

Answer 1

I would suggest you try to generate an image using the System.Drawing class and then insert that into the PDF document.

Answer 2

Call this code on your PdfWriter object:

writer.SetEncryption(PdfWriter.STRENGTH40BITS, null, null, PdfWriter.AllowPrinting);

This won't prevent users from selecting text, but it will prevent them from copying and pasting it. Give it a try.