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.
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.