Aspose::Words::Saving::HtmlSaveOptions::get_MetafileFormat method. Specifies in what format metafiles are saved when exporting To Html, MHtml, or EPUB. Default value is Png, meaning that metafiles are rendered To raster Png images in C++....exporting to HTML, MHTML, or EPUB. Default value is Png , meaning...metafiles are rendered to raster PNG images. Aspose :: Words :: Saving...