New image file formats keep turning up, taking advantage of advances in compression technology. One of the latest is FLIF, Free Lossless Image Format. It claims to outcompress PNG, lossless JPEG2000, lossless WebP, and lossless BPG. Though it has only a lossless mode, it claims that “FLIF works well on any kind of image, so the end-user does not need to try different algorithms and parameters.”
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