Left: Original image enlarged 300% to show pixels.
Right: Compressed image with the lowest quality, enlarged 300% too.
Many of you who use Photoshop may know more or less how JPG works, and some of you might have a deep knowledge about the algorithm that makes our photos look bad or allows them to be quickly loaded in browsers. This post is for those who know bigger is better, but don’t know why an image gets heavier or lighter.
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