A python script to convert Project Zomboid global mod data binaries to and from JSON, so that they can be viewed and edited easily.

1. Install Python 3.12 or above.
2. Clone the repository, or download from Releases.
3. Run python gmd_converter.py in_filepath out_filepath.

in_filepath should be the path to the input file. A file with the extension .bin will be converted to JSON, and a file with the extension .json will be converted to global mod data binary.

out_filepath is the optional path to write the output to. If you pass nothing the output will be written to out/global_mod_data.

All table keys will be prefixed with _string: or _number: . This is to preserve their type, as JSON does not support non-string keys.

An additional key __WORLD_VERSION is created - this is not a global mod data entry, it is simply metadata.