// For complete examples and data files, please go to https://github.com/groupdocs-conversion/GroupDocs.Conversion-for-Java
// Instantiating the conversion handler
ConversionHandler conversionHandler = new ConversionHandler(Utilities.getConfiguration());
List<GroupDocsInputStream> convertedDocumentStream = conversionHandler
.<List<GroupDocsInputStream>> convert(fileName, new ImageSaveOptions());