One of the main motivations for FUIF is to have an image format that is responsive by design, which means it’s no longer necessary to produce many variants of the same image: low-quality placeholders, thumbnails, many downscaled versions for many display resolutions. A single file, truncated at different offsets, can do the same thing.
FLIF isn’t anywhere near ready to use, but it’s a fascinating idea. I love the idea that the format stores the image data …
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