How do I open the MS Word webpage? When you save the MS Word document as a webpage, then it in saved with the extension .htm and the format is HTML.

8. ODT files are part of the Open Document Format (ODF) files, which are XML-based, Open Source file formats. .ODT files are for word processing programs.

The files are created by Microsoft XPS Document Writer, but can be opened by Microsoft XPS Viewer. You may access the Viewer directly, or open it through the file. Open the XPS Viewer first.