Resizing larger vanity armor sprites to vanilla character size

I've been working on a mod, and to have higher detail I made the sprites larger then the maximum 43 by 43, is there anyway when coding to shrink down the sprites size so that it "fits comfortably" over the vanilla races? I'd like to know before I finish the sprites, so that the hard work isn't done for nothing. i'll have some examples below and if anyone would like to help me with this just DM me. P.s they are in Asperite just for these purposes google paint.

 

Weeeeeell I know you are after a coding way, buuuut Asperite can use rotsprite to reduce a pixel image well. Choose that option when changing an image's size.

 

I'll give it a try thanks for the suggestion : D. I used it to some success just that the sprites are like 5 pixels larger, but with the head that is largely what i'd like to reduce with coding if possible.