Discussion
fuck_that_took_forever.webp(44 KB)

lossless Webp
>Relative to lossless JXL filesize, how close in compression does a given lossless image codec get?
That's what I'm trying to answer here. A dozen common type 1920x1080 PNG images were used.
JXL KB = 100% and BMP KB = 0%. Lossless JXL/Webp/AVIF/oxiPNG/QOI tested. Anything above 100% means JXL was defeated.
(BMP KB-JXL KB)=A | (BMP KB-Xcodec KB)/A= lossless compression relative to JXL lossless
ALL files: https://files.catbox.moe/x926hp.zip
That's what I'm trying to answer here. A dozen common type 1920x1080 PNG images were used.
JXL KB = 100% and BMP KB = 0%. Lossless JXL/Webp/AVIF/oxiPNG/QOI tested. Anything above 100% means JXL was defeated.
cjxl in.png out.jxl -d 0.0 -e 10 --brotli_effort=11
cwebp -lossless -m 6 -q 100 in.png -o out.webp
avifenc -l -s 0 --cicp 1/13/16 in.png out.avif
oxipng -o 6 in.png
qoi "...\in.png" "...\out.qoi"
ALL files: https://files.catbox.moe/x926hp.zip









