We have updated the PDF Stamper component with a new method SetPageMask.
You can use this method to specify which pages you want to stamp watermark or text onto.
The string format of the mask is composed of a series of 0 and 1. The position of 1 and 0 corresponds to the pdf page number. 0 will denote that the correspondent page will not be stamped on. 1 is on the contrary. So:
“1000″ : the 2,3,4 page of the pdf file will not be stamped on.
“010101″: the even page of the pdf file will be stamped on