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In terms of getting it into chrome: https://bugs.chromium.org/p/chromium/issues/detail?id=539120

> Keep in mind that the author of the FLIF works on the new FUIF (https://github.com/cloudinary/fuif) which will be part of the JPEG XL. So, probably FLIF will be deprecated soon. And as far as JPEG XL is also based on Google PIX, there is a high probability that Google will support this new format in their Blink engine.

https://jpeg.org/jpegxl/index.html

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You can encode to JPEG XL here: https://libwebpjs.appspot.com/jpegxl/

(Compiled to WebAssembly, not by me)

Is JPEG XL also suited to replace PNG like FLIF?

yeah. it's partially based on https://github.com/cloudinary/fuif so if you use that part of JPEG XL you'll get something similar out of it.

Yes indeed, for the lossless mode (based on tech by the same author) we're seeing about 45-82% of GIF size, and 60-80% of (A)PNG depending on content.

Also other famous compression gurus, including Alex Rhatushnyak and Lode Vandevenne contributed to the lossless side of JPEG XL.

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