I found myself needing to come up with a coordinate map from an image a bunch of times, so I had Claude (AI) write me this stupid little app that lets you upload an image, and click all over it to place pixels and copy out the array of pixel mappings.
It’s really simple and dumb but might be useful to someone else.
https://image-pixel-mapper.pages.dev
(I’m a developer and use AI all the time in coding, but this was the first time I’d used Claude to just write a whole tool. I never even looked at the code, just kept telling it what bugs it had and letting it fix them. Took like 10 tries to get it right. It was an interesting experience.)