Summary Size difference vs. JPEG XL (-e 9 -E 3 -I 1)
Type Image category WebP WebP v2 FLIF AVIF PNG Effort 9 Effort 7 Effort 3 BMF (-s) EMMA
Digital 2d Art Art 16.8% 10.2% 5.8% 71.3% 47.7% 3.3% 8.3% 29.5% -3.8% -11.6%
Digital 2d Art FanArt 19.2% 10.2% 8.7% 51.1% 52.9% 2.4% 9.7% 38.3% -5.0% -13.3%
Comics / B&W Manga 21.1% 15.9% 6.0% 140.3% 53.9% 2.5% 10.5% 32.6% -2.1% -11.0%
Pixel Art PixelArt 12.7% 14.2% 32.4% 106.4% 46.1% 5.0% 18.8% 274.9% -10.0% -0.5%
Emoji / Icons Emoji 11.4% 6.0% 12.0% 56.0% 50.0% 3.2% 9.6% 25.6% -7.1% -4.7%
Digital 2d Art Pixiv 15.4% 10.2% 9.7% 38.0% 50.7% 2.6% 6.6% 21.7% -7.8% -11.1%
Comics ComixArt 20.4% 12.6% 6.0% 95.7% 58.3% 4.4% 12.2% 41.4% -1.4% -12.7%
Game Assets GameSets 13.3% 9.4% 11.9% 83.7% 48.9% 5.8% 19.7% 72.9% -8.7% -13.7%
Game Screenshots GameScr 13.1% 7.1% 5.8% 40.2% 41.3% 3.3% 7.0% 28.5% -6.2% -13.9%
Photo ITAP 10.5% 5.2% 2.2% 47.6% 40.6% 2.8% 5.2% 19.6% -6.6% -10.9%
Photo CLIC 11.9% 8.0% 4.0% 23.2% 41.1% 0.9% 2.6% 7.2% -5.4% -6.3%
Photo LPCB 13.8% 11.0% 5.3% 33.8% 33.4% 1.2% 2.2% 12.9% -5.0% -8.1%
Digital 3d Art LowPoly 16.1% 5.3% 3.9% 46.7% 43.8% 2.0% 10.1% 36.5% -8.5% -15.6%
Fractal Art Fractals 10.9% 7.6% 3.7% 47.6% 38.8% 5.6% 10.9% 36.6% -0.2% -11.3%
Average 14.8% 9.5% 8.4% 63.0% 46.3% 3.2% 9.5% 48.5% -5.6% -10.3%
https://chromium.googlesource.com/webm/libwebp
WebP [315abbd] (cwebp -lossless -z 9 -m 6 -q 100 -mt)
https://chromium.googlesource.com/codecs/libwebp2/
WebP2 [c13f92d] (cwp2 -q 100 -effort 9)
https://github.com/libjxl/libjxl
Jpeg XL v0.7
JXL -e 9 -E 3 -I 1 (cjxl -e 9 -E 3 -I 1 -q 100 --keep_invisible=0), Effort X (cjxl -e X -q 100 --keep_invisible=0)
https://github.com/FLIF-hub/FLIF
FLIF 0.3 (flif -e -E 100 -Q 100)
https://github.com/AOMediaCodec/libavif
Libavif 0.8.4 (dav1d [dec]:0.8.0, aom [enc/dec]:2.0.1-1114-g7ddc21b28, rav1e [enc]:0.4.0-alpha (p20201208-2-g5caffedb))
AVIF Lossless (avifenc -p --lossless -s 0)
https://css-ig.net/pingo
https://github.com/fhanau/Efficient-Compression-Tool
Pingo + ECT: Pingo 0.99 rc3 (27) (pingo -sa -nocompression -strip) + ECT 0.8.3 (ect -9 --reuse)
https://globalcompetition.compression.ru/
EMMA (Marcio Pais)
https://globalcompetition.compression.ru/assets/files/compressors/EMMA.7z
https://www.compression.ru/ds/
https://www.compression.ru/ds/bmf_2_01.rar
BMF 2.01 (bmf -s)