I really want a nice, crisp view when zooming in to my map. The current upscaling of images really makes it feel awkward, like it's adding complexity to something that doesn't need it. Disabling resampling could really add to the aesthetic, looking more like vanilla maps.

I'm struggling to understand what you're talking about, but assuming you mean when zooming out and not in, then the method used is the same as vanilla. There's other methods that could be applied that would look different, however again the current zoom out method is the vanilla one, and when fully zoomed in each block is one pixel, no "resampling" or similar is applied, so I am still confused about what you mean.

I'm struggling to understand what you're talking about, but assuming you mean when zooming out and not in, then the method used is the same as vanilla. There's other methods that could be applied that would look different, however again the current zoom out method is the vanilla one, and when fully zoomed in each block is one pixel, no "resampling" or similar is applied, so I am still confused about what you mean.

In short, I understand there's no resampling. I know each block is represented as a single pixel on the tile image, but browsers automatically resample images and make them look awkward.

What browser are you using? I can't reproduce anything similar looking on Firefox or Chrome, and the CSS is already set to use "pixelated"/not resampled rendering: https://github.com/jpenilla/squaremap/blob/master/common/src/main/resources/web/css/styles.css#L20-L21