gist here https://gist.github.com/nrbnlulu/ef0c621c1754f51867750c661b1dcb89

Results

Gzip compressed JSON file size: 0.006137 MB
Raw Msgpack file size: 0.213828 MB
Gzip compressed Msgpack file size: 0.006373 MB

--- Comparison in MB ---
Compressing Msgpack with Gzip saves 0.207455 MB.

--- Overall Space Efficiency ---
The most space-efficient format is 'Gzip JSON' with a size of 0.006137 MB.