Any DWG to Image Converter is a batch converter that allows you to convert DWG, DXF and DWF files to TIF (TIFF), JPG (JPEG), BMP, GIF, PNG, TGA, PCX, WMF and EMF without the need of AutoCAD.
Any DWF to DWG Converter allows you to convert DWF (Design Web Format) files to AutoCAD DWG and DXF file formats, so you can recover DWF entities to corresponding DWG entities easily.