Cloud APIs to manipulate Word documents
Is this possible now in 2021?
Yes, you can convert DOC/DOCX to HTML and send output to the browser as a stream. Please check the following documentation for the conversion. Although, it includes an example of DOC to PDF conversion. For DOC/DOCX to HTML conversion, you can set the format parameter value to HTML and proceed accordingly.
Furthermore, we are planning to develop a lightweight document viewer control to embed a Word Document in a Web Page or Blog. Please check the following page for the details. If you are interested in this control then you can vote for it.