// For complete examples and data files, please go to https://github.com/groupdocs-viewer/GroupDocs.Viewer-for-.NET
// Create/initialize image handler
ViewerImageHandler imageHandler = new ViewerImageHandler(Utilities.GetConfigurations());
PdfFileOptions options = new PdfFileOptions();
options.RenderComments = true; // Default value is false
// Call GetPdfFile to get FileContainer type object which contains the stream of pdf file.
FileContainer container = imageHandler.GetPdfFile(DocumentName, options);
//Change the extension of the file and assign to a string type variable filename
String filename = Path.GetFileNameWithoutExtension(DocumentName) + ".pdf";
//Save each image at disk
Utilities.SaveFile(filename, container.Stream);