WebP automatic image compression

automatic, image, compression, webp

« default » on HC RGB

original cwebp pingo -webp
176.69 KB 0.88 KB — 0.055s 0.09 KB — 0.110s
dssim 0.00198356 lossless
butteraugli 4.906423 lossless
ssimulacra 0.01025382 lossless

« default » on LC RGBA

original cwebp pingo -webp
470.72 KB 6.29 KB — 0.075s 3.61 KB — 0.130s
dssim 0.00020389 0.00000027
butteraugli 2.998663 0.505622
ssimulacra 0.00418778 0.00003116

« default » on HC RGB

original cwebp pingo -webp
235.00 KB 57.17 KB — 0.009s 85.96 KB — 0.012s
dssim 0.00484237 0.00263933
butteraugli 6.490414 3.061152
ssimulacra 0.04549100 0.02969424

notes

cwebp cf2f88b
cwebp target
pingo rc3 (02)
pingo -webp target

note that this function could be work in progress and would not always perform as well as demonstrate on any samples. the lossless compression level over this transformation can be increased to get smaller filesize by using -sN:

N: from 0 to 9 — 0: fast and good compression — 9: slow, but better compression
pingo flags -sN target

machine test: CPU G1820 2.7Ghz — 1.88GB RAM — Windows 7, 32-bit