Edit world tile-data predictably out of game

[Jbm101]

I've been trying to figure this out for years at this point and I still don't even know where to start.

I've been trying to find a way to import world tile-data into Rimworld to have custom planets and such, but I have no clue how the game handles the data it saves. In the save file its all deflated to save space I assume, and I don't know what algorithm the game uses to reinflate and deflate that data.

I know tools like Worldedit 2 exist but the amount of labor that would go into editing almost 600,000 tiles is a lot and being able to generate the data from an image would greatly streamline the process.