Java tutorial
import java.io.FileOutputStream; import com.lowagie.text.Element; import com.lowagie.text.PageSize; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfStamper; public class AddExtraPageToExistingPDF { public static void main(String[] args) { try { PdfReader reader = new PdfReader("YourOwnPDF.pdf"); PdfStamper stamp = new PdfStamper(reader, new FileOutputStream("AddExtraPageToExistingPDF.pdf")); PdfContentByte over; BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.EMBEDDED); stamp.insertPage(1, PageSize.A4); over = stamp.getOverContent(1); over.beginText(); over.setFontAndSize(bf, 18); over.showTextAligned(Element.ALIGN_LEFT, "DUPLICATE OF AN EXISTING PDF DOCUMENT", 30, 600, 0); over.endText(); stamp.close(); } catch (Exception de) { de.printStackTrace(); } } }