I have html files on my C drive containing pictures. It opens correctly in a web browser. I open it in word 2013 and then try to save it as a docx. It saves a docx but the file is only 200 bites, instead of the 75MB it should be. The docx does open correctly and look good but if I delete the html, the docx no longer opens.

How do I save as a self contained docx?