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How do I create a forward link to a specific page which does not yet exists when I generate the link

How do I generate some text, which links forward to an other page in the pdf file I am generating?

I have the code below which generate working pdf links, bit it require that the page I link to, exists in the pdf file at the time I generate the link. Is there any way to avoid this problem?

My use case is that I am generating the table of content, which is in the beginning of the pdf file, but it need to link to the content pages, which don’t yet exists when I generate the table of content.

int linkToPdfPage=42;
PdfArray array = new PdfArray();
PdfDestination dest2 = PdfDestination.makeDestination(array);
Link newLink=new Link("Link text", PdfAction.createGoTo(dest2));
newLink.getLinkAnnotation().setBorder(new PdfArray(new int[]{0,0,0}));



You can use named destinations for this task. You can create a link to a PdfStringDestination with a name of your choice and later, when you have the target page, create an explicit destination and add it to the document for your chosen name using PdfDocument.addNamedDestination.

For example:

try (   PdfDocument pdfDocument = new PdfDocument(new PdfWriter(...));
        Document document = new Document(pdfDocument)   )
    String destinationName = "MyForwardDestination";

    for (int page = 1; page <= 50; page++) {
        document.add(new Paragraph().setFontSize(100).add(String.valueOf(page)));
        switch (page) {
        case 1:
            document.add(new Paragraph(new Link("Click here for a forward jump", new PdfStringDestination(destinationName)).setFontSize(20)));
        case 42:
            pdfDocument.addNamedDestination(destinationName, PdfExplicitDestination.createFit(pdfDocument.getLastPage()).getPdfObject());
        if (page < 50)
            document.add(new AreaBreak(AreaBreakType.NEXT_PAGE));

(CreateLink test testCreateForwardLink)

This generates a 50 page PDF with a link on page 1 targeting page 42, and the link was added to page 1 long before page 42 was created.