Optimizing JPEG images with MozJPEG

MozJPEG is a project from Mozilla aimed to improve JPEG compression while keeping full backwards compatibility with current decoders. Recently they released version 3 of the library. Previous version reduced files by 5% on average compared to jpeg-turbo, the JPG compression library it is based on. The new version contains more improvements, such as reducing compression artifacts for text on white background, and better quality for high-resolution images.

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