When you save the MS Word document as a webpage, then it in saved with the extension .htm and the format is HTML. When you click on this HTML file, it will open with your default browser.

If you want to have an option to choose the file format before opening a PDF, HTML, XML, or any other file in Word, here is how you can do that.

Open Word and your HTML file. Make any file edits you need. Use the Styles pane located on the Home tab to apply styles such as headings. Click the "Insert" tab and then click "Picture" or "Clip ...

In Word, open the clipboard: Under the File tab, click the tiny arrow beside Clipboard. 2. Go back to PowerPoint and select the first slide you want to copy from PowerPoint to Word, then press ...