You can read ASCII DXF files in any text editor. DXF drawings are dimensionless, so the user needs to know the unit used to create the drawing.Ī DXF file can either be in an ASCII or binary format. Unlike the DWG format which is proprietary to AutoCAD, DXF is open source.ĭXF files are vector graphic files that can store 2D drawings. It was initially released in 1982 and is almost as old as Autodesk itself.