So after having to deal with a couple situations where a model I made and a model I got for pngtuberplus were created at overly large resolutions, I decided to do something productive about it rather than spend the tedious amount of time necessary to manually adjust all of the offsets/positions/amplitudes and downsample all the images. (I've had to do this before and it's not fun if say you've got models with dozens of sprites in them!)

Since the files are all plaintext jsons, from a technical standpoint this wasn't overly difficult.
Anyway, I've put the fruits of my labors up on Github for if anybody else feels the need to resize a pngtuber model. Works with the latest version of the software (1.4.5). Hopefully this saves one or two people some time.

https://github.com/GeneralTekno/PNGTuberPlusResizer

Absolutely amazing utility! Thank you a lot, you saved me a lot of headache importing raw psd vtuber model and making it into pngtuber without other apps :]

im having a very hard time figuring out how this works, can you assist me on it?

thank you for taking the time to make this, but the read me and instructions do not tell you how to use this... even more frustration

oh you are the bees knees. i was so afraid i was going to have to scale everything down manually T_T