Web browsers don't have native support for WordML. In what context are you trying to do this? Converting WordML to HTML would be a fairly complex process because the formatting in a Word document can be scattered across multiple XML files and tracing through multiple levels of style inheretence and correctly interpretting the style is certainly not simple.
If the end user has Word, then attempting to open the document in a web browser will result in an embedded Word window within the browser. Word also natively support outputting its documents in HTML format, so that's another option.
If you really need WordML to be converted to HTML, your best bet is probably licensing a third party solution, though in my experience most of them are far from perfect despite being extremely expensive.
Hi,
you should have a look to the solution TDIWiz (www.tdiwiz.com), which enables very easily the server-side creation of documents. As you can use with TDIWiz also '.htm' templates, I think it could help you with your problem.
If you don't need conditional or "programmed" document parts and don't want to map hierarchical data within the document, you can use TDIWiz even completely for free.
If there are any questions, please contact us: info@sklenar.at