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Message: <blockquote data-quote="jrleo33" data-source="post: 217121" data-attributes="member: 17332">Much of what is lost when a WEB site opens a JPEG image and resizes it smaller or larger, and then resaves the image is simply called recompressing an already compressed image; which will always cause degradation of the newly resized JPEG image.  The process of creating compressed JPEGs is synonymous with the process of throwing away information, which accounts for the famously small file size of JPEGs. When a WEB site opens up the JPEG to edit, some tonality is lost along with fine shades of color, and some high-frequency detail gets replaced by what’s called a “JPEG compression artifact.” The purpose of my reply is to explain some the problems associated with sharing photos over the Internet.      </blockquote>