>>17727
Hey just a quick protip, greyscale images like these can actually have considerably smaller filesizes when saved as a PNG - see the attached image as an example.

For reference, all I did was open the JPEG in MS Paint, re-save it as a PNG, then run the PNG through the program "APNG Optimizer" (which reduces the filesize without any reduction in quality).

And of course you'd likely see even smaller filesizes if one were to save as PNG directly from the source artwork rather than re-saving from a JPEG.