Here’s a little lesson on subpixels that’ll make all spriting talents at least 50% better. And it’s realllly simple.

So what’s a subpixel? It’s when the size of some pixels in a sprite are smaller than others. Here’s an example:

See how the pixels of the red smiley are smaller than all of the pixels of Sans? Sans’ pixels seem more thick, right?

This is a main issue with many sprites, and while it may not look so bad with just the smiley there, if it’s used as a huge part of the sprite, then it can usually look clashing and awkward, as well as a rushed and “drawn on” feel. That’ll probably make at least some people less interested in your AU if the sprites look bad to them. Is that unfair? Yeah, probably. Is it fixable easily? Yeah.

But how do you fix this, you ask?

It’s a really quick fix: resize the image.

You’ll want all the pixels to look like this (if you’re using an editor that shows pixels at small scale like this). This typically means setting the size to 50%, because screenshots of Undertale are twice the size of the sprites. See how the pixels are so small it’s impossible to subpixel? That’s the ideal way to edit it.

And since the size of screenshot is double the size of an unsubpixellable sprite, just size it up again to 200% and put it in the comic frame. Boom.

Fits perfectly!