Saving file 'out.webp'
File:      in.png
Dimension: 1136 x 856
Output:    102120 bytes Y-U-V-All-PSNR 29.10 34.19 33.87   30.22 dB
           (0.84 bpp)

JPG CVVDP= 9.01 Fsize= 134.5 KB [ cjpeg -baseline -sample 1x1,1x1,1x1 -quality 26 ]

Webp CVVDP= 9.01 Fsize= 99.7 KB [ cwebp -m 6 -af -q 25 ]

JXL CVVDP= 9.01 Fsize= 96.5 KB [ cjxl -e 10 -q 55 ]

AVIF CVVDP= 9.04 Fsize= 78.3 KB [ avifenc -y 420 -d 10 -s 0 -q 40]


WebP compression efficiency relative to [ JXL:  91.6 % ] & [ AVIF: 61.9 % ]