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// For complete examples and data files, please go to https://github.com/groupdocs-viewer/GroupDocs.Viewer-for-Java
try {
	// Setup GroupDocs.Viewer config
	ViewerConfig config = Utilities.getConfiguration();
	// Create html handler
	ViewerHtmlHandler htmlHandler = new ViewerHtmlHandler(config);
	String guid = fileName;

	// Options to convert countPagesToConvert consecutive pages starting
	// from pageNumber
	HtmlOptions options = new HtmlOptions();
	options.setPageNumber(pageNumber);
	options.setCountPagesToConvert(countPagesToConvert);
	List<PageHtml> pages = htmlHandler.getPages(guid, options);

	for (PageHtml page : pages) {
		Utilities.saveAsHtml(page.getPageNumber() + "_" + fileName, page.getHtmlContent());
	}
} catch (Exception exp) {
	System.out.println("Exception: " + exp.getMessage());
	exp.printStackTrace();
}