Hi.
Been curious about TIC-80 for a long time, and the holidays looked like as good time as any to start learning.
While I did that, I thought of writing a node script to help me with tilesets and spritesheets. This is it https://www.npmjs.com/package/tic80-image-tools. It exports tilesets and spritesheets from a lua cartridge into PNGs, so you can edit the images and reimport them to the cartridge with the same tool.
Come to think of it, now I wonder, maybe this already existed. I should have asked. But I guess I was having fun with the challenge.
I'm still testing and refining this. Let me know what you think.
