Format change from aspose doc to html to aspose doc

Aspose.Words Product Family
1

Hello
Here is a small test demonstrating that converting an aspose document to html then back to aspose document , some informations are missing.
Maybe our save options are incomplete.
Could you have a look please and tell us if it’s possible to keep the original format as much as possible ? Thank you!
Here is the code:

private static HtmlSaveOptions getSaveOptions(final com.aspose.words.Document doc) {
	final HtmlSaveOptions saveOptions = new HtmlSaveOptions(SaveFormat.HTML);
	if (doc.getFirstSection().getPageSetup().getDifferentFirstPageHeaderFooter()) {
		saveOptions.setExportHeadersFootersMode(ExportHeadersFootersMode.FIRST_PAGE_HEADER_FOOTER_PER_SECTION);
	} else {
		saveOptions.setExportHeadersFootersMode(ExportHeadersFootersMode.FIRST_SECTION_HEADER_LAST_SECTION_FOOTER);
	}
	saveOptions.setExportListLabels(ExportListLabels.BY_HTML_TAGS);
	saveOptions.setExportTocPageNumbers(false);
	saveOptions.setEncoding(StandardCharsets.UTF_8);
	saveOptions.setExportImagesAsBase64(true);
	return saveOptions;
}

@Test
void aspose_doc_to_html_to_aspose_doc() throws Exception {
	// Create aspose doc from docx
	final byte[] data = IOUtils
		    .toByteArray(new ClassPathResource("track_change_toc.docx").getInputStream());
	final LoadOptions lo = new LoadOptions();
	lo.setLoadFormat(LoadFormat.AUTO);
	lo.setEncoding(StandardCharsets.UTF_8);
	final com.aspose.words.Document doc = new com.aspose.words.Document(new ByteArrayInputStream(data), lo);

	// Convert the aspose doc to html
	final ByteArrayOutputStream bos = new ByteArrayOutputStream();
	doc.save(bos, getSaveOptions(doc));
	final String html = bos.toString(StandardCharsets.UTF_8);

	// Convert the html to aspose doc
	final com.aspose.words.Document docFromHtml = new com.aspose.words.Document();
	final DocumentBuilder builderAspose = new DocumentBuilder(docFromHtml);
	builderAspose.insertHtml(html, false);
	builderAspose.getDocument().getCompatibilityOptions().setDoNotExpandShiftReturn(true);
	builderAspose.getDocument().save("afterConvert.docx", new OoxmlSaveOptions(SaveFormat.DOCX));

	// -> the resulting file is much different that the original one
}

The file track_change_toc.docx is attachedtrack_change_toc.docx (14.5 KB)

2

@concord_tech Please note, Aspose.Words is designed to work with MS Word documents. HTML and MS Word documents are quite different and it is difficult and sometimes impossible to provide 100% fidelity after conversion from one format to another.
In your document, there are formatting revisions, unfortunately, there is no way to preserve them in HTML. If you accept revisions before conversion to HTML and then import it back, the document looks much closer to the original:

Document doc = new Document("C:\\Temp\\in.docx");
doc.acceptAllRevisions();

HtmlSaveOptions opt = new HtmlSaveOptions();
opt.setExportRoundtripInformation(true);
opt.setExportListLabels(ExportListLabels.BY_HTML_TAGS);
opt.setPrettyFormat(true);
opt.setCssStyleSheetType(CssStyleSheetType.EMBEDDED);
doc.save("C:\\Temp\\out.html", opt);

doc = new Document("C:\\Temp\\out.html");
doc.save("C:\\Temp\\out.docx");