The OpenXML Document Viewer team has created a browser plug-in for converting Word document (.DOCX) into HTML format so that it can be viewed on a browser. As DOCX format is basically an extended XML format, it can be easily converted to HTML format.
Installation instruction, download a suitable plug-in for your browser from here. For example, download plug-in for Firefox.
1. Extract OpenXMLViewer to a temporary folder
2. Open ‘OpenXMLViewer_Win_Firefox.xpi’ with Firefox and install the plug-in.
3. Restart your browser and open the required word document using the browser to read.