This is a JPG image with a resolution of 640x425. It has been compressed at the highest quality setting. This is the typical compression used by digital camera's. The filesize of this image is 235 KB (241.459 bytes).



Here's is the same image, re-compressed at nearly the highest quality setting. There is no discernable difference. Yet this time, the filesize of the image is 81 KB (82.872 bytes).



And even when you compress it down to only 54 KB (55.677 bytes), it still looks very good.