Search Optical Signatures using Java E-Signing API v18.4


We are delighted to announce the another monthly release of GroupDocs.Signature for Java v18.4. This release comes up with many features like searching QRCode and Barcode signatures in supported documents. Aside this, few improvements and fixes are also introduced in this version 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.

eSignature API for Java v18.4 – Features

Obtain Search Progress

Obtain search progress while searching signatures in the documents. Following code sample shows how to obtain search progress:
SignatureHandler handler = new SignatureHandler(signConfig);
handler.SearchStarted.add(new ProcessStartEventHandler() {
	public void invoke(Object sender, ProcessStartEventArgs args) {
        System.out.println("Search started for "+args.getTotalSignatures()+"-page(s) in Document "+args.getGuid()+" started at " +String.valueOf(args.getStarted()));

Search QR-Code and Barcode Signatures

Search QR-Code and Barcode Signatures in following documents:
  • PDF
  • Cells
  • Slides
  • Words
  • Image
Following code sample shows how to search Barcode signature in the PDF document:
PdfSearchBarcodeOptions searchOptions = new PdfSearchBarcodeOptions();
// specify text math type
// search document
SearchResult result ="SignedBarCode.pdf", searchOptions);

Rectangle Property for Radial Gradient Brush

Rectangle property to set borders of ellipse for Radial Gradient Brush is introduced.

Java eSignature API v18.4 – Improvements

  • Separate Brush classes for following brush styles:
  • Update dynamic Metered library with latest changes
  • Mark Brush property as Obsolete
  • e-Signing API for Java 18.4 – Bug Fixes

    • Multiple options on pages setup give duplicate page numbers
    • Result of signing methods when document provided by URL

    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.