DWF files are similar but are instead used to share files online or via a free viewer program, while DXF is for interoperability.. How to Open DXF Files. Autodesk has a couple of free viewers ...

Open the AutoCAD project containing the DWG file you want to convert, either by double-clicking it or by using AutoCAD's "Open" command. Open the "Export" menu, then click "DWF." ...