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A comment on Lepton image compression: saving 22% losslessly from images at 15MB/s. Parent comment
https://people.xiph.org/~jm/daala/revisiting/subset1_psnrhvs...
so when you use a better encoder like mozjpeg, JPEG is actually competitive with the newest formats, given enough quality
it gets slightly grainier results with blocking artifacts, but BPG and WebM look like they had a painting algorithm blur out all of the details
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https://people.xiph.org/~jm/daala/revisiting/subset1_psnrhvs...
so when you use a better encoder like mozjpeg, JPEG is actually competitive with the newest formats, given enough quality
it gets slightly grainier results with blocking artifacts, but BPG and WebM look like they had a painting algorithm blur out all of the details