What is an MX file? Binary package created by Mathematica, a desktop application used for computation and visualization; stores Mathematica expressions in a proprietary serialized format, which is optimized for fast loading; used for distributing Mathematica packages.

More Information Mathematica packages can be created using DumpSave and read using Get . They can also be imported using the Import command and exported using the Export command. For example, Import["myFile.mx"] reads the MX file and returns an expression. Similarly, Export["myFile.mx", expr] serializes the "expr" expression and saves it to an MX file. Since MX files are saved in a binary format, they are non-human readable. Additionally, they cannot be shared between different versions of Mathematica or between installations of Mathematica on different operating systems.