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Why DXF Is Best. Essentially, the main difference between the two files is that DWG files is proprietary to AutoCAD, while DXF is an exchange file created for non-AutoCAD applications to write a similar file type.
DXF stands for Data eXchange Format and is designed for exchanging drawings between different CAD programs. DWG is a binary file, which is why itâs much more compact. The DXF, on the other hand, is ASCII text, and therefore much more bloated in size. In essence, the DXF file is not a compressed (in a non-technical sense) file format, while the DWG offers objects to be defined using the native AutoCAD scheme.