neocities will either squish, crop it to the top left, or crop it to the center. love the consistancy
it also makes it look like my website is just a giant picture of a koopa troopa. so i think imma remove it. here's the code i made to do this, feel free to use: https://dabric.neocities.org/custom-banner.js
instead of it being an image of a koopa troopa, now it's an image of my website. no joke, cuz it never fully loads in time for neocities to take a screenshot of it
my uploader is faster. ~30s vs iirc like ~2m for the same thing
the neocities api lets you upload everything in a single request, but doing too much will make neocities 500. so instead i do like 50 files at a time. the size of them doesn't seem to matter, just the amount of files.