Here, by image quality, we mean the extent to which a resulting image differs from the “ideal image” we’ve already been given.Įssentially, when we say “quality,” we primarily have the following factors in mind: Sharpness In fact, we’ll assume that we’re already starting with some “ideal image”, and we need to put a version of it on the web in the most optimal way possible. In this article, we’re mostly concerned with technical image quality-so, this means we don’t take into account things like composition, perspective, or color harmony. Check out the Structural similarity index. It’s your responsibility to your users to deliver the highest-quality image while using the least amount of resources: processing power (both server and client), memory, and bandwidth. Still, we’ll leave that checklist as an exercise for you and focus on the images themselves.
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