Here is a mixed Backcountry Horsemen and US Forest Service work crew;
a great bunch of guys,
good background, everyone is smiling. The original is 640x480 and 128 KB.
I re-sized it to 400x300 pixels, which shrank it to 43 KB.
If I left it at 640x480, and told the web editor to present it
at 400x300, you would have noticed a pause when this page loaded.
Note that 400x300 is a 4:3 ratio, and so is 640x480.
Here is the same picture, but I intentionally set the dimensions to
500x300 in the HTML to show you what happens when you get the proportions
wrong. Our team has gained weight!
Here is the same picture, but now with dimensions 400x350.
Note that everyone has thinned down considerably.