getImageRepresentationOfDocumentPages.java

// For complete examples and data files, please go to https://github.com/groupdocs-comparison/GroupDocs.Comparison-for-Java
Comparer comparer = new Comparer();
ComparisonSettings cs = new ComparisonSettings();
cs.setStyleChangeDetection(true);
//compare document
ICompareResult result = comparer.compare(sourcePath, targetPath, cs);
result.saveDocument(resultPath);
//get list of pages
List<PageImage> resultImages = comparer.convertToImages(resultPath);
//save them as bitmap to separate folder
if (!new File(savePath + "/Result Pages").exists()) 
   new File(savePath + "/Result Pages").mkdir();
for (PageImage image : resultImages)
{ 
     BufferedImage bitmap = ImageIO.read(image.getPageStream()); 
     ImageIO.write(bitmap, "png", new FileOutputStream(savePath + "/Result Pages/result_" + image.getPageNumber() + ".png")); 
}