>What's so bad about WebP? * Lack of clear spec ("The code is the spec") * Lack of versioning of spec (at least 3 major versions with different capabilities/f

>What's so bad about WebP? * Lack of clear spec ("The code is the spec") * Lack of versioning of spec (at least 3 major versions with different capabilities/features of which not all degrade nicely) * Forced 4:2:0 chroma subsampling * 8bit-channel only (no support for 10bit+ aka wide-gamut images)