#whereas discord sees the small file and is like ok bro I guess I don't need to touch the dimensions

[aptericia]

ok I think I got it.

yes tumblr does reduce the size of large images, but it defines "size" based on pixel count, not file size. So even though that Anthy & Saionji fencing pic is tiny as far as storage goes (since it's uncolored), I drew it on the default screen size, which is apparently too big for tumblr to handle.

In contrast, something like this piece:

which is a much bigger file, has smaller pixel dimensions (2048x2048 vs 2048x2732) and does not get resized at all.

This is why I thought tumblr had a pretty high bar for when it will start shrinking images; I never noticed it, even with large pics like Nanami here. But no, it's just because I usually don't work larger than 2048x2048 or so and when I do, they tend to be extremely large files like these:

where I did notice a small amount of pixelation and was not surprised because they are colorful pictures designed for print and are therefore enormous.

hey why is the image quality so bad on that last post? It looks super sharp in my local gallery and everywhere else I’ve shared it… tumblr WHAT are you doing