Why should I save and upload my files as HTML?
Saving HTML documents in Moodle allows your students to directly access the information from within the Moodle page. This is preferable for course information and documents, such as assignment instructions and timelines, which students may need to check often. There may also be times where you want to upload files for download, such as templates or forms that need to be modified or copied or longer documents that students will want to print. In those cases, leaving the document in its original form (.doc, .xls) would be preferable.