You are getting technical on me and I am not qualified to defend. I just right clicked on the picture and a screen comes up where I choose "Properties".
On your Langworthy chip above it says; 158 pixels by 158 pixels and size = 3138 bytes. Now on the pixels side that seems reasonable since there are supposedly 72 dpi and your picture is about 2 inches sq. if dpi equals pixels.

On Chuck's picture it says 490 pixels by 499 pixels and 13,754 bytes. Now in the old Computer days 8 bits made a byte. I dont know about dots per inch, pixels and bytes.
Maybe a younger Computer person can help us out like Larry, or Don or Neal.
I know it all seems like a bunch of who cares crap, but I think some people have figured how to display better pictures in smaller time than those behemoths of Gene. <G>
Just looking for a better way.