Legacy notice!

iText 5 is the previous major version of iText’s leading PDF SDK. iText 5 is EOL, and is no longer developed, although we still provide support and security fixes. Switch your project to iText 8, our latest version which supports the latest PDF standards and technologies.
Check related iText 8 content!

I have used iText to fill data into existing AcroForm fields in a PDF.

I am now looking for a solution to add new AcroForm fields to a PDF. Is this possible with iText? If so, how can I do this?

Posted on StackOverflow on Nov 30, 2014 by Peter

This is documented in the official documentation, more specifically in the SubmitForm example. Additionally, I've written a simple example called AddField. It adds a button field at a specific position defined by new Rectangle(36, 700, 72, 730).

public void manipulatePdf(String src, String dest) throws DocumentException, IOException {
        PdfReader reader = new PdfReader(src);
        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
        PushbuttonField button = new PushbuttonField(
            stamper.getWriter(), new Rectangle(36, 700, 72, 730), "post");
        button.setBackgroundColor(new GrayColor(0.7f));
        PdfFormField submit = button.getField();
            "http://itextpdf.com:8180/book/request", null,
            PdfAction.SUBMIT_HTML_FORMAT | PdfAction.SUBMIT_COORDINATES));
        stamper.addAnnotation(submit, 1);

As you can see, you need to create a PdfFormField object (using helper classes such as PushbuttonField, TextField,...) and then use PdfStamper's addAnnotation() method to add the field to a specific page.

Click this link if you want to see how to answer this question in iText 7.