You can select “Page Range” under the “Pages to Stamp” section in the stamp dialog.
Choose a start page and an end page. A page number of -1 can be used to specify the last page of the file. Use the “Increment” box to set an incremental number of pages to be stamped. Setting the value to 1 will stamp every page, 2 will stamp ever second page, 5 will stamp every fifth page and so on.
If you need additional ways to select pages, look at our desktop product – StampPDF DE.