Hi,
Please upload the files to a sharehoster that doesn't require registration.
Are you saying that it did work with 2.0.30 ? If so, then include these as well.
Tilman

Am 29.04.2026 um 14:31 schrieb Dietrich, Neonila:

Hello pdfbox community,

since Apache PDFBox version 2.0.31, we are not able to generate PDF-UA-compliant signature fields. We are attaching a code snippet that we use to create visible signature fields. Please let me know what I need to change in this code so that the PDF document remains PDF-UA-compliant. We verify PDF-UA compliance by using the PAC APP ( https://www.axes4.com/de <https://www.axes4.com/de>)

Two sample documents are attached to this email: original and result with signatures fields.

/** used with pdfbox 2.0.36 */

  public static void main(String[] args)

  {

    File inputFile = new File("PDF_UA_original.pdf");

    File outputFile = new File("result.pdf");

    float xPos = 50;

    float yStart = 600;

    float width = 200;

    float high = 50;

    float distance = 70;

    try (PDDocument doc = PDDocument.load(inputFile))

    {

      PDDocumentCatalog documentCatalog = doc.getDocumentCatalog();

      PDPageTree allPages = documentCatalog.getPages();

      PDPage pdPage = allPages.get(0);

      PDAcroForm acroForm = documentCatalog.getAcroForm();

      if (acroForm == null)

      {

        acroForm = new PDAcroForm(doc);

documentCatalog.setAcroForm(acroForm);

      }

      for ( int i = 0 ; i < 4 ; i++ )

      {

        PDSignatureField pdSignatureField = new PDSignatureField(acroForm);

pdSignatureField.setPartialName("SigField_" + UUID.randomUUID().toString());

pdSignatureField.setAlternateFieldName("Alt_" + pdSignatureField.getPartialName());

        float currentY = yStart - (i * distance);

        PDRectangle rectangle = new PDRectangle(xPos, currentY, width, high);

PDAnnotationWidget widget = pdSignatureField.getWidgets().get(0);

widget.setRectangle(rectangle);

PDAppearanceDictionary pdAppearanceDictionary = new PDAppearanceDictionary();

PDAppearanceStream appearanceStream = new PDAppearanceStream(doc);

pdAppearanceDictionary.setNormalAppearance(appearanceStream);

widget.setAppearance(pdAppearanceDictionary);

widget.setPage(pdPage);

acroForm.getFields().add(pdSignatureField);

pdPage.getAnnotations().add(widget);

pdPage.getCOSObject().setNeedToBeUpdated(true);

doc.getSignatureFields().add(pdSignatureField);

      }

      doc.save( outputFile );

    }

    catch (Exception e)

    {

e.printStackTrace();

    }

  }

Best regards,

Thank you very much for your support

Neonila Dietrich
Developer
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