I did a test on my site as to how fast it takes it to load and one of the results I got back was as follows:
http://i4.photobucket.com/.../backgroundad.png is resized in HTML or CSS from 198x219 to 113x125. Serving a scaled image could save 46.3KiB (67% reduction).
My question is what is a scaled image? And how do I make it a scaled image?