Author here: Definitely cherry picked ;)

I did deliberately pick some "bad" examples like the blue+green image, and other multicolor images.

I wanted to add an upload function so people could test any image, then i realised I'd have to implement the compression/hashing in the client. Maybe i should!

I tried getting that working earlier using Claude to convert your script - you can see the result here: https://claude.site/artifacts/b747d94a-2923-4904-8ed1-7330bf...

Here's the transcript and code: https://claude.ai/share/4a562082-b681-4f0c-909c-3c32c34fd050

I could tell and I really appreciate it. It's really helpful to see both the good and the bad.

Great work!