com.aspose.words

Example:

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

//Set Word2003 version for document, for inserting image as VML shape
doc.getCompatibilityOptions().optimizeFor(MsWordVersion.WORD_2003);

builder.insertImage(getImageDir() + "dotnet-logo.png");

NodeCollection shapes = doc.getChildNodes(NodeType.SHAPE, true);

// Loop through all single shapes inside document.
for (Shape shape : (Iterable<Shape>) shapes) {
    System.out.println(shape.getMarkupLanguage());
}

//Iso29500_2008 does not allow VML shapes, so you need to use OoxmlCompliance.Iso29500_2008_Strict for converting VML to DML shapes
OoxmlSaveOptions saveOptions = new OoxmlSaveOptions();
saveOptions.setCompliance(OoxmlCompliance.ISO_29500_2008_STRICT);
saveOptions.setSaveFormat(SaveFormat.DOCX);

doc.save(getArtifactsDir() + "OoxmlSaveOptions.Iso29500Strict.docx", saveOptions);