Team GroupDocs is excited to release version 18.6 of GroupDocs.Signature for Java API. This latest version supports to sign documents with stamp signatures either in a round or a square shape. Apart from that, few fixes are also introduced in this release of the API. We would recommend you to download the new version of API and evaluate the exciting features to enhance document e-signing experience.


Encode and Search Custom Object to QR-Code SignatureNow users of this API can add and search custom object to QR-Code signatures. Following code sample shows how to add a custom object to QR-Code signatures:```

// setup custom object instance with required data DocumentSignature docSignature =new DocumentSignature(); docSignature.setID(UUID.randomUUID().toString()); docSignature.setAuthor(“Mr.Sherlock”); docSignature.setSigned(new java.util.Date()); docSignature.setDataFactor(new java.math.BigDecimal(“0.67”)); // setup options PdfQRCodeSignOptions signOptions = new PdfQRCodeSignOptions(); // QR-code type signOptions.setEncodeType(QRCodeTypes.QR); // setup Data property with custom object signOptions.setData(docSignature);

## Square type for Stamp SignaturesUser can sign documents with stamp signatures either in a square or a round shape. Following code sample shows how to sign document with square type stamp signature:```
ImagesStampSignOptions signOptions = new ImagesStampSignOptions();
// setup stamp type
// sign document with square stamp
String signedPath = (String)handler.sign("invoice.png", signOptions,saveOptions); 

New Slides File FormatsFollowing are the new slides file formats introduced in this release of the API:

  • otp
  • potx
  • potm
  • ppsm

QR-Code Embedded ClassesNew embedded classes introduced for QR-Code are as follow:

  • VCard
  • Email

Bug Fixes

  • Signed .doc files have .docx extension and .ppt files have .pps extension

Available Channels and Resources

Here are a few channels and resources for you to learn, try and get technical support on GroupDocs.Signature API for Java:


As always, you are welcome to share your feedback to improve this product. We will be happy to know your thoughts. Just create a forum thread and our dedicated support team will be there to respond.