Add or Remove Custom XMP Metadata from GIF using Java

AddRemoveXMPMetadata_Java.md

Learn how to add or remove custom XMP metadata from GIF using Java: https://blog.conholdate.com/2021/10/21/add-or-remove-custom-xmp-metadata-from-gif-using-java/

The following topics are discussed/covered in this article:

1. Add Custom XMP Metadata Package to GIF using Java
2. Read Custom XMP Metadata Package Properties using Java
3. Remove Custom XMP Metadata Package using Java

AddRemoveXMPMetadata_Java_Add.java

// This code example demonstrates how to create and add a custom XMP metadata package to a GIF image.
// Create an instance of the Metadata class
Metadata metadata = new Metadata("C:\\Files\\xmp.gif");

// Get root packages
IXmp root = (IXmp)metadata.getRootPackage();

// Create Xmp Packet Wrapper
XmpPacketWrapper packet = new XmpPacketWrapper();

// Define custom package
XmpPackage custom = new XmpPackage("gd", "https://groupdocs.com");
custom.set("gd:Copyright", "Copyright (C) 2021 GroupDocs. All Rights Reserved.");
custom.set("gd:CreationDate", new Date().toString());
custom.set("gd:Company", XmpArray.from(new String[] { "Aspose", "GroupDocs" }, XmpArrayType.Ordered));

// Add custom package to Xmp Packet Wrapper
packet.addPackage(custom);

// Update XmpPackage
root.setXmpPackage(packet);

// Save the file
metadata.save("C:\\Files\\xmp_output.gif");

AddRemoveXMPMetadata_Java_Read.java

// This code example demonstrates how to read all the properties defined in the custom XMP package
// Create an instance of the Metadata class
Metadata metadata = new Metadata("C:\\Files\\xmp_output.gif");

// Get root packages
IXmp root = (IXmp)metadata.getRootPackage();
if (root.getXmpPackage() != null)
{
  // Get Xmp pakages
  XmpPackage[] packages = root.getXmpPackage().getPackages();
  
  // Show Package details
  for (XmpPackage pkg : packages )
  {
    System.out.println(pkg.getNamespaceUri());
    System.out.println(pkg.getPrefix());

    for(String keys : pkg.getKeys())
    {
      MetadataProperty property = pkg.findProperties(new WithNameSpecification(keys)).get_Item(0);
      System.out.println(property.getName() + " : " + property.getValue());
    }
  }
}

AddRemoveXMPMetadata_Java_Remove.java

// This code example demonstrates how to remove the XMP metadata package from a GIF image.
// Create an instance of the Metadata class
Metadata metadata = new Metadata("C:\\Files\\xmp_output.gif");

// Get root packages
IXmp root = (IXmp)metadata.getRootPackage();

// Set package to null
root.setXmpPackage(null);

// Save image
metadata.save("C:\\Files\\xmp_output_Removed.gif");