Data for the PNG compression tests published on op111.net in September 2025 ================================================================================ d3js.org.png -------------------------------------------------------------------------------- - Filename: d3js.org.png - Original size: 1,493,211 bytes - Dimensions: 1600 × 1205 pixels - Number of colors: 168,716 TEST 1 rm -f d3js.org--optipng-default.png && optipng --out d3js.org--optipng-default.png d3js.org.png Time (mean ± σ): 2.638 s ± 0.001 s [User: 2.633 s, System: 0.004 s] Range (min … max): 2.637 s … 2.638 s 5 runs - Output size: 1,113,706 bytes - Reduction: 25.42% TEST 2 rm -f d3js.org--optipng-o7.png && optipng -o7 --out d3js.org--optipng-o7.png d3js.org.png Time (mean ± σ): 32.903 s ± 0.020 s [User: 32.872 s, System: 0.028 s] Range (min … max): 32.890 s … 32.937 s 5 runs - Output size: 1,112,055 bytes - Reduction: 25.53% TEST 3 rm -f d3js.org--oxipng-default.png && oxipng --out d3js.org--oxipng-default.png d3js.org.png Time (mean ± σ): 764.2 ms ± 3.0 ms [User: 933.0 ms, System: 14.8 ms] Range (min … max): 760.6 ms … 767.5 ms 5 run - Output size: 1,058,046 bytes - Reduction: 29.14% TEST 4 rm -f d3js.org--oxipng-opt-max.png && oxipng --opt max --out d3js.org--oxipng-opt-max.png d3js.org.png Time (mean ± σ): 1.937 s ± 0.098 s [User: 15.007 s, System: 0.066 s] Range (min … max): 1.818 s … 2.056 s 5 runs - Output size: 1,046,446 bytes - Reduction: 29.92% TEST 5 rm -f d3js.org--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out d3js.org--oxipng-opt-max-zopfli-fast.png d3js.org.png Time (mean ± σ): 20.504 s ± 0.039 s [User: 21.604 s, System: 0.073 s] Range (min … max): 20.464 s … 20.570 s 5 runs - Output size: 1,041,552 bytes - Reduction: 30.25% TEST 5 Windows 11 del out.png 2>NUL && oxipng --opt max --zopfli --fast --out out.png d3js.org.png Time (mean ± σ): 18.399 s ± 0.022 s [User: 19.206 s, System: 0.476 s] Range (min … max): 18.375 s … 18.432 s 5 runs TEST 6 rm -f d3js.org--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out d3js.org--oxipng-opt-max-zopfli.png d3js.org.png Time (mean ± σ): 28.986 s ± 1.110 s [User: 242.812 s, System: 0.493 s] Range (min … max): 27.084 s … 30.006 s 5 runs - Output size: 1,041,552 bytes - Reduction: 30.25% TEST 6 Windows 11 del out.png 2>NUL && oxipng --opt max --zopfli --out out.png d3js.org.png Time (mean ± σ): 24.731 s ± 0.191 s [User: 234.283 s, System: 1.850 s] Range (min … max): 24.426 s … 24.933 s 5 runs TEST 7 rm -f d3js.org--cwebp-default.webp && cwebp -metadata all -lossless -exact -o d3js.org--cwebp-default.webp d3js.org.png Time (mean ± σ): 533.3 ms ± 3.5 ms [User: 512.5 ms, System: 19.4 ms] Range (min … max): 529.0 ms … 538.2 ms 5 runs - Output size: 828,992 bytes - Reduction: 44.48% TEST 7 WITH v1.6.0 rm -f d3js.org--cweb16p-default.webp && cwebp16 -metadata all -lossless -exact -o d3js.org--cwebp16-default.webp d3js.org.png Time (mean ± σ): 453.6 ms ± 3.6 ms [User: 436.9 ms, System: 15.7 ms] Range (min … max): 449.6 ms … 457.6 ms 5 runs - Output size: 829,552 bytes - Reduction: 44.45% TEST 8 rm -f d3js.org--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o d3js.org--cwebp-z9.webp d3js.org.png Time (mean ± σ): 7.373 s ± 0.014 s [User: 7.346 s, System: 0.027 s] Range (min … max): 7.360 s … 7.392 s 5 runs - Output size: 813,606 bytes - Reduction: 45.51% TEST 8 WITH v1.6.0 rm -f d3js.org--cweb16p-z9.webp && cwebp16 -metadata all -lossless -exact -z 9 -o d3js.org--cwebp16-z9.webp d3js.org.png Time (mean ± σ): 6.357 s ± 0.006 s [User: 6.323 s, System: 0.032 s] Range (min … max): 6.349 s … 6.366 s 5 runs - Output size: 813,552 bytes - Reduction: 45.52% debian-desktop.png -------------------------------------------------------------------------------- - Filename: debian-desktop.png - Original size: 707,471 bytes - Dimensions: 2560 × 1440 pixels - Number of colors: 20,322 TEST 1 rm -f debian-desktop--optipng-default.png && optipng --out debian-desktop--optipng-default.png debian-desktop.png Time (mean ± σ): 3.096 s ± 0.005 s [User: 3.085 s, System: 0.010 s] Range (min … max): 3.092 s … 3.103 s 5 run - Output size: 464,555 bytes - Reduction: 34.34% TEST 2 rm -f debian-desktop--optipng-o7.png && optipng -o7 --out debian-desktop--optipng-o7.png debian-desktop.png Time (mean ± σ): 52.281 s ± 0.060 s [User: 52.247 s, System: 0.028 s] Range (min … max): 52.201 s … 52.359 s 5 runs - Output size: 464,555 bytes (sic) - Reduction: 34.34% TEST 3 rm -f debian-desktop--oxipng-default.png && oxipng --out debian-desktop--oxipng-default.png debian-desktop.png Time (mean ± σ): 1.488 s ± 0.001 s [User: 1.816 s, System: 0.023 s] Range (min … max): 1.486 s … 1.488 s 5 runs - Output size: 448,544 bytes - Reduction: 36.60% TEST 4 rm -f debian-desktop--oxipng-opt-max.png && oxipng --opt max --out debian-desktop--oxipng-opt-max.png debian-desktop.png Time (mean ± σ): 7.005 s ± 0.053 s [User: 56.225 s, System: 0.066 s] Range (min … max): 6.916 s … 7.045 s 5 runs - Output size: 392,710 bytes - Reduction: 44.49% TEST 5 rm -f debian-desktop--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out debian-desktop--oxipng-opt-max-zopfli-fast.png debian-desktop.png Time (mean ± σ): 64.088 s ± 0.054 s [User: 66.588 s, System: 0.080 s] Range (min … max): 64.006 s … 64.139 s 5 runs TEST 5 Windows 11 del out.png 2>NUL && oxipng --opt max --zopfli --fast --out out.png debian-desktop.png Time (mean ± σ): 55.113 s ± 0.085 s [User: 57.452 s, System: 0.422 s] Range (min … max): 55.015 s … 55.247 s 5 runs - Output size: 431,815 bytes - Reduction: 38.96% TEST 6 rm -f debian-desktop--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out debian-desktop--oxipng-opt-max-zopfli.png debian-desktop.png Time (mean ± σ): 156.336 s ± 8.211 s [User: 1246.007 s, System: 0.467 s] Range (min … max): 146.802 s … 164.725 s 5 runs TEST 6 Windows 11 del out.png 2>NUL && oxipng --opt max --zopfli --out out.png debian-desktop.png Time (mean ± σ): 148.757 s ± 15.537 s [User: 1243.932 s, System: 2.879 s] Range (min … max): 137.415 s … 175.755 s 5 runs - Output size: 382,459 bytes - Reduction: 45.94% TEST 7 rm -f debian-desktop--cwebp-default.webp && cwebp -metadata all -lossless -exact -o debian-desktop--cwebp-default.webp debian-desktop.png Time (mean ± σ): 860.4 ms ± 2.8 ms [User: 836.8 ms, System: 23.4 ms] Range (min … max): 857.0 ms … 864.3 ms 5 runs - Output size: 328,602 bytes - Reduction: 53.55% TEST 8 rm -f debian-desktop--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o debian-desktop--cwebp-z9.webp debian-desktop.png Time (mean ± σ): 4.480 s ± 0.003 s [User: 4.462 s, System: 0.017 s] Range (min … max): 4.476 s … 4.482 s 5 runs - Output size: 264,570 bytes - Reduction: 62.60% drought-map.png -------------------------------------------------------------------------------- - Filename: drought-map.png - Original size: 976,919 bytes - Dimensions: 2012 × 2293 pixels - Number of colors: 4,772 TEST 1 rm -f drought-map--optipng-default.png && optipng --out drought-map--optipng-default.png drought-map.png Time (mean ± σ): 2.555 s ± 0.003 s [User: 2.547 s, System: 0.008 s] Range (min … max): 2.553 s … 2.560 s 5 runs - Output size: 646,102 bytes - Reduction: 33.86% TEST 2 rm -f drought-map--optipng-o7.png && optipng -o7 --out drought-map--optipng-o7.png drought-map.png Time (mean ± σ): 24.141 s ± 0.008 s [User: 24.114 s, System: 0.023 s] Range (min … max): 24.132 s … 24.152 s 5 runs - Output size: 646,102 bytes (sic) - Reduction: 33.86% TEST 3 rm -f drought-map--oxipng-default.png && oxipng --out drought-map--oxipng-default.png drought-map.png Time (mean ± σ): 1.623 s ± 0.001 s [User: 1.858 s, System: 0.026 s] Range (min … max): 1.622 s … 1.624 s 5 runs - Output size: 601,965 bytes - Reduction: 38.38% TEST 4 rm -f drought-map--oxipng-opt-max.png && oxipng --opt max --out drought-map--oxipng-opt-max.png drought-map.png Time (mean ± σ): 5.247 s ± 0.087 s [User: 43.248 s, System: 0.056 s] Range (min … max): 5.136 s … 5.318 s 5 runs - Output size: 589,602 bytes - Reduction: 39.65% TEST 5 rm -f drought-map--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out drought-map--oxipng-opt-max-zopfli-fast.png drought-map.png Time (mean ± σ): 85.481 s ± 0.043 s [User: 86.872 s, System: 0.072 s] Range (min … max): 85.434 s … 85.530 s 5 runs - Output size: 580,993 bytes - Reduction: 40.53% TEST 6 rm -f drought-map--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out drought-map--oxipng-opt-max-zopfli.png drought-map.png Time (mean ± σ): 109.564 s ± 5.852 s [User: 786.733 s, System: 0.567 s] Range (min … max): 100.206 s … 114.591 s 5 runs - Output size: 580,993 bytes (sic) - Reduction: 40.53% TEST 7 rm -f drought-map--cwebp-default.webp && cwebp -metadata all -lossless -exact -o drought-map--cwebp-default.webp drought-map.png Time (mean ± σ): 301.6 ms ± 2.0 ms [User: 287.8 ms, System: 13.7 ms] Range (min … max): 298.4 ms … 303.5 ms 5 runs - Output size: 374,356 bytes - Reduction: 61.68% TEST 8 rm -f drought-map--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o drought-map--cwebp-z9.webp drought-map.png Time (mean ± σ): 6.437 s ± 0.009 s [User: 6.386 s, System: 0.050 s] Range (min … max): 6.429 s … 6.446 s 5 runs - Output size: 369,064 bytes - Reduction: 62.22% github.com-repo.png -------------------------------------------------------------------------------- - Filename: github.com-repo.png - Original size: 270,336 bytes - Dimensions: 1352 × 1105 pixels - Number of colors: 5,720 TEST 1 rm -f github.com-repo--optipng-default.png && optipng --out github.com-repo--optipng-default.png github.com-repo.png Time (mean ± σ): 758.4 ms ± 2.0 ms [User: 755.4 ms, System: 2.8 ms] Range (min … max): 755.8 ms … 760.9 ms 5 runs - Output size: 178,507 bytes - Reduction: 33.97% TEST 2 rm -f github.com-repo--optipng-o7.png && optipng -o7 --out github.com-repo--optipng-o7.png github.com-repo.png Time (mean ± σ): 7.945 s ± 0.004 s [User: 7.924 s, System: 0.020 s] Range (min … max): 7.941 s … 7.951 s 5 runs - Output size: 178,445 bytes - Reduction: 33.99% TEST 3 rm -f github.com-repo--oxipng-default.png && oxipng --out github.com-repo--oxipng-default.png github.com-repo.png Time (mean ± σ): 310.4 ms ± 1.2 ms [User: 375.3 ms, System: 8.3 ms] Range (min … max): 308.6 ms … 311.5 ms 5 runs - Output size: 169,022 bytes - Reduction: 37.48% TEST 4 rm -f github.com-repo--oxipng-opt-max.png && oxipng --opt max --out github.com-repo--oxipng-opt-max.png github.com-repo.png Time (mean ± σ): 912.6 ms ± 38.7 ms [User: 7167.3 ms, System: 34.7 ms] Range (min … max): 851.3 ms … 941.7 ms 5 runs - Output size: 167,590 bytes - Reduction: 38.01% TEST 5 rm -f github.com-repo--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out github.com-repo--oxipng-opt-max-zopfli-fast.png github.com-repo.png Time (mean ± σ): 21.438 s ± 0.072 s [User: 21.769 s, System: 0.064 s] Range (min … max): 21.371 s … 21.549 s 5 runs - Output size: 162,970 bytes - Reduction: 39.72% TEST 6 rm -f github.com-repo--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out github.com-repo--oxipng-opt-max-zopfli.png github.com-repo.png Time (mean ± σ): 25.154 s ± 1.460 s [User: 189.555 s, System: 0.347 s] Range (min … max): 23.391 s … 26.801 s 5 runs - Output size: 162,970 bytes - Reduction: 39.72% TEST 7 rm -f github.com-repo--cwebp-default.webp && cwebp -metadata all -lossless -exact -o github.com-repo--cwebp-default.webp github.com-repo.png Time (mean ± σ): 68.1 ms ± 0.4 ms [User: 56.9 ms, System: 11.0 ms] Range (min … max): 67.4 ms … 68.5 ms 5 runs - Output size: 76,358 bytes - Reduction: 71.75% TEST 8 rm -f github.com-repo--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o github.com-repo--cwebp-z9.webp github.com-repo.png Time (mean ± σ): 1.958 s ± 0.004 s [User: 1.935 s, System: 0.022 s] Range (min … max): 1.951 s … 1.962 s 5 runs - Output size: 70,084 bytes - Reduction: 74.08% goaccess.io-demo.png -------------------------------------------------------------------------------- - Filename: goaccess.io-demo.png - Original size: 325,494 bytes - Dimensions: 1600 × 1205 pixels - Number of colors: 3,032 TEST 1 rm -f goaccess.io-demo--optipng-default.png && optipng --out goaccess.io-demo--optipng-default.png goaccess.io-demo.png Time (mean ± σ): 984.2 ms ± 2.0 ms [User: 978.8 ms, System: 5.2 ms] Range (min … max): 982.1 ms … 987.1 ms 5 runs - Output size: 218,045 bytes - Reduction: 33.01% TEST 2 rm -f goaccess.io-demo--optipng-o7.png && optipng -o7 --out goaccess.io-demo--optipng-o7.png goaccess.io-demo.png Time (mean ± σ): 10.085 s ± 0.006 s [User: 10.054 s, System: 0.027 s] Range (min … max): 10.079 s … 10.096 s 5 runs - Output size: 218,045 bytes (sic) - Reduction: 33.01% TEST 3 rm -f goaccess.io-demo--oxipng-default.png && oxipng --out goaccess.io-demo--oxipng-default.png goaccess.io-demo.png Time (mean ± σ): 605.0 ms ± 4.0 ms [User: 679.6 ms, System: 24.0 ms] Range (min … max): 602.6 ms … 612.0 ms 5 runs - Output size: 201,055 bytes - Reduction: 38.23% TEST 4 rm -f goaccess.io-demo--oxipng-opt-max.png && oxipng --opt max --out goaccess.io-demo--oxipng-opt-max.png goaccess.io-demo.png Time (mean ± σ): 1.421 s ± 0.031 s [User: 11.136 s, System: 0.055 s] Range (min … max): 1.394 s … 1.471 s 5 runs - Output size: 193,235 bytes - Reduction: 40.63% TEST 5 rm -f goaccess.io-demo--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out goaccess.io-demo--oxipng-opt-max-zopfli-fast.png goaccess.io-demo.png Time (mean ± σ): 32.375 s ± 0.027 s [User: 32.861 s, System: 0.044 s] Range (min … max): 32.344 s … 32.409 s 5 runs - Output size: 189,059 bytes - Reduction: 41.92% TEST 6 rm -f goaccess.io-demo--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out goaccess.io-demo--oxipng-opt-max-zopfli.png goaccess.io-demo.png Time (mean ± σ): 41.427 s ± 0.453 s [User: 282.429 s, System: 0.276 s] Range (min … max): 40.880 s … 42.089 s 5 runs - Output size: 189,059 bytes (sic) - Reduction: 41.92% TEST 7 rm -f goaccess.io-demo--cwebp-default.webp && cwebp -metadata all -lossless -exact -o goaccess.io-demo--cwebp-default.webp goaccess.io-demo.png Time (mean ± σ): 90.2 ms ± 0.6 ms [User: 77.1 ms, System: 13.0 ms] Range (min … max): 89.4 ms … 90.8 ms 5 runs - Output size: 89,142 bytes - Reduction: 72.61% TEST 8 rm -f goaccess.io-demo--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o goaccess.io-demo--cwebp-z9.webp goaccess.io-demo.png Time (mean ± σ): 3.227 s ± 0.005 s [User: 3.199 s, System: 0.028 s] Range (min … max): 3.221 s … 3.234 s 5 runs - Output size: 88,022 bytes - Reduction: 72.96% html5-logo.png -------------------------------------------------------------------------------- - Filename: html5-logo.png - Original size: 8,562 bytes - Dimensions: 512 × 512 pixels - Number of colors: 84 TEST 1 rm -f html5-logo--optipng-default.png && optipng --out html5-logo--optipng-default.png html5-logo.png Time (mean ± σ): 63.9 ms ± 0.4 ms [User: 63.7 ms, System: 0.1 ms] Range (min … max): 63.4 ms … 64.3 ms 5 runs - Output size: 4,780 bytes - Reduction: 44.17% TEST 2 rm -f html5-logo--optipng-o7.png && optipng -o7 --out html5-logo--optipng-o7.png html5-logo.png Time (mean ± σ): 620.4 ms ± 0.5 ms [User: 617.8 ms, System: 2.6 ms] Range (min … max): 619.9 ms … 621.1 ms 5 runs - Output size:: 4,780 bytes (sic) - Reduction: 44.17% TEST 3 rm -f html5-logo--oxipng-default.png && oxipng --out html5-logo--oxipng-default.png html5-logo.png Time (mean ± σ): 52.0 ms ± 0.4 ms [User: 53.4 ms, System: 7.3 ms] Range (min … max): 51.4 ms … 52.4 ms 5 runs - Output size: 5,147 bytes - Reduction: 39.89% TEST 4 rm -f html5-logo--oxipng-opt-max.png && oxipng --opt max --out html5-logo--oxipng-opt-max.png html5-logo.png Time (mean ± σ): 190.9 ms ± 15.4 ms [User: 1387.9 ms, System: 24.6 ms] Range (min … max): 174.4 ms … 216.3 ms 5 runs - Output size: 4,429 bytes - Reduction: 48.27% TEST 5 rm -f html5-logo--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out html5-logo--oxipng-opt-max-zopfli-fast.png html5-logo.png Time (mean ± σ): 2.046 s ± 0.009 s [User: 2.082 s, System: 0.009 s] Range (min … max): 2.038 s … 2.061 s 5 runs - Output size: 4,273 bytes - Reduction: 50.09% TEST 6 rm -f html5-logo--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out html5-logo--oxipng-opt-max-zopfli.png html5-logo.png Time (mean ± σ): 3.528 s ± 0.115 s [User: 27.585 s, System: 0.055 s] Range (min … max): 3.357 s … 3.628 s 5 runs - Output size: 4,131 bytes - Reduction: 51.75% TEST 7 rm -f html5-logo--cwebp-default.webp && cwebp -metadata all -lossless -exact -o html5-logo--cwebp-default.webp html5-logo.png Time (mean ± σ): 14.6 ms ± 0.4 ms [User: 10.4 ms, System: 4.2 ms] Range (min … max): 14.3 ms … 15.2 ms 5 runs - Output size: 3,416 bytes - Reduction: 60.10% TEST 8 rm -f html5-logo--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o html5-logo--cwebp-z9.webp html5-logo.png Time (mean ± σ): 833.8 ms ± 3.3 ms [User: 826.9 ms, System: 6.7 ms] Range (min … max): 830.1 ms … 837.3 ms 5 runs - Output size: 3,460 bytes - Reduction: 59.59% mediawiki-logo.png -------------------------------------------------------------------------------- - Filename: mediawiki-logo.png - Original size: 28,656 bytes - Dimensions: 270 × 300 pixels - Number of colors: 4,635 TEST 1 rm -f mediawiki-logo--optipng-default.png && optipng --out mediawiki-logo--optipng-default.png mediawiki-logo.png Time (mean ± σ): 148.3 ms ± 0.5 ms [User: 146.3 ms, System: 1.9 ms] Range (min … max): 147.6 ms … 149.0 ms 5 runs - Output size: 25,941 bytes - Reduction: 9.47% TEST 2 rm -f mediawiki-logo--optipng-o7.png && optipng -o7 --out mediawiki-logo--optipng-o7.png mediawiki-logo.png Time (mean ± σ): 2.028 s ± 0.001 s [User: 2.013 s, System: 0.015 s] Range (min … max): 2.027 s … 2.031 s 5 runs - Output size: 25,941 bytes (sic) - Reduction: 9.47% TEST 3 rm -f mediawiki-logo--oxipng-default.png && oxipng --out mediawiki-logo--oxipng-default.png mediawiki-logo.png Time (mean ± σ): 46.3 ms ± 0.8 ms [User: 50.8 ms, System: 8.2 ms] Range (min … max): 45.4 ms … 47.6 ms 5 runs - Output size: 24,632 bytes - Reduction: 14.04% TEST 4 rm -f mediawiki-logo--oxipng-opt-max.png && oxipng --opt max --out mediawiki-logo--oxipng-opt-max.png mediawiki-logo.png Time (mean ± σ): 171.4 ms ± 8.9 ms [User: 1353.0 ms, System: 17.7 ms] Range (min … max): 162.5 ms … 183.8 ms 5 runs - Output size: 24,664 bytes - Reduction: 13.93% TEST 5 rm -f mediawiki-logo--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out mediawiki-logo--oxipng-opt-max-zopfli-fast.png mediawiki-logo.png Time (mean ± σ): 1.363 s ± 0.007 s [User: 1.418 s, System: 0.017 s] Range (min … max): 1.357 s … 1.370 s 5 runs - Output size: 24,211 bytes - Reduction: 15.51% TEST 6 rm -f mediawiki-logo--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out mediawiki-logo--oxipng-opt-max-zopfli.png mediawiki-logo.png Time (mean ± σ): 2.816 s ± 0.085 s [User: 21.833 s, System: 0.068 s] Range (min … max): 2.670 s … 2.887 s 5 runs - Output size: 24,211 bytes (sic) - Reduction: 15.51% TEST 7 rm -f mediawiki-logo--cwebp-default.webp && cwebp -metadata all -lossless -exact -o mediawiki-logo--cwebp-default.webp mediawiki-logo.png Time (mean ± σ): 57.5 ms ± 0.3 ms [User: 49.0 ms, System: 8.3 ms] Range (min … max): 57.2 ms … 57.8 ms 5 runs - Output size: 19,830 bytes - Reduction: 30.80% TEST 8 rm -f mediawiki-logo--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o mediawiki-logo--cwebp-z9.webp mediawiki-logo.png Time (mean ± σ): 610.6 ms ± 1.7 ms [User: 603.1 ms, System: 7.3 ms] Range (min … max): 608.9 ms … 613.1 ms 5 runs - Output size: 17,918 bytes - Reduction: 37.47% powertoys.png -------------------------------------------------------------------------------- - Filename: powertoys.png - Original size: 244,630 bytes - Dimensions: 1230 × 917 pixels - Number of colors: 18,791 TEST 1 rm -f powertoys--optipng-default.png && optipng --out powertoys--optipng-default.png powertoys.png Time (mean ± σ): 959.7 ms ± 1.5 ms [User: 955.3 ms, System: 4.3 ms] Range (min … max): 957.6 ms … 961.1 ms 5 runs - Output size: 230,325 bytes - Reduction: 5.85% TEST 2 rm -f powertoys--optipng-o7.png && optipng -o7 --out powertoys--optipng-o7.png powertoys.png Time (mean ± σ): 11.871 s ± 0.005 s [User: 11.852 s, System: 0.017 s] Range (min … max): 11.865 s … 11.878 s 5 runs - Output size: 229,920 bytes - Reduction: 6.01% TEST 3 rm -f powertoys--oxipng-default.png && oxipng --out powertoys--oxipng-default.png powertoys.png Time (mean ± σ): 266.2 ms ± 0.8 ms [User: 325.1 ms, System: 18.6 ms] Range (min … max): 265.3 ms … 267.2 ms 5 runs - Output size: 201,533 bytes - Reduction: 17.62% TEST 4 rm -f powertoys--oxipng-opt-max.png && oxipng --opt max --out powertoys--oxipng-opt-max.png powertoys.png Time (mean ± σ): 724.9 ms ± 41.1 ms [User: 5354.0 ms, System: 51.4 ms] Range (min … max): 652.4 ms … 747.3 ms 5 runs - Output size: 198,008 bytes - Reduction: 19.06% TEST 5 rm -f powertoys--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out powertoys--oxipng-opt-max-zopfli-fast.png powertoys.png Time (mean ± σ): 8.663 s ± 0.012 s [User: 9.109 s, System: 0.036 s] Range (min … max): 8.651 s … 8.682 s 5 runs - Output size: 194,709 bytes - Reduction: 20.41% TEST 6 rm -f powertoys--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out powertoys--oxipng-opt-max-zopfli.png powertoys.png Time (mean ± σ): 13.882 s ± 0.940 s [User: 113.867 s, System: 0.143 s] Range (min … max): 13.156 s … 15.456 s 5 runs - Output size: 194,709 bytes - Reduction: 20.41% TEST 7 rm -f powertoys--cwebp-default.webp && cwebp -metadata all -lossless -exact -o powertoys--cwebp-default.webp powertoys.png Time (mean ± σ): 178.1 ms ± 0.7 ms [User: 168.0 ms, System: 9.9 ms] Range (min … max): 177.3 ms … 178.9 ms 5 runs - Output size: 144,246 bytes - Reduction: 41.04% TEST 8 rm -f powertoys--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o powertoys--cwebp-z9.webp powertoys.png Time (mean ± σ): 1.703 s ± 0.004 s [User: 1.687 s, System: 0.016 s] Range (min … max): 1.699 s … 1.707 s 5 runs - Output size: 140,090 bytes - Reduction: 42.73% pschmidt.png -------------------------------------------------------------------------------- - Filename: pschmidt.png - Original size: 59,852 bytes - Dimensions: 4096 × 4096 pixels - Number of colors: 16,777,216 TEST 1 Benchmark 1: rm -f pschmidt--optipng-default.png && optipng --out pschmidt--optipng-default.png pschmidt.png Time (mean ± σ): 2.509 s ± 0.004 s [User: 2.486 s, System: 0.023 s] Range (min … max): 2.505 s … 2.513 s 5 runs - Output size: 59,591 bytes - Reduction: 0.44% TEST 2 rm -f pschmidt--optipng-o7.png && optipng -o7 --out pschmidt--optipng-o7.png pschmidt.png Time (mean ± σ): 32.161 s ± 0.297 s [User: 32.112 s, System: 0.043 s] Range (min … max): 31.820 s … 32.461 s 5 runs - Output size: 59,457 bytes - Reduction: 0.66% TEST 3 rm -f pschmidt--oxipng-default.png && oxipng --out pschmidt--oxipng-default.png pschmidt.png Time (mean ± σ): 1.411 s ± 0.005 s [User: 2.415 s, System: 0.028 s] Range (min … max): 1.405 s … 1.419 s 5 runs - Output size: 59,840 bytes - Reduction: 0.02% TEST 4 rm -f pschmidt--oxipng-opt-max.png && oxipng --opt max --out pschmidt--oxipng-opt-max.png pschmidt.png Time (mean ± σ): 2.770 s ± 0.110 s [User: 16.719 s, System: 0.099 s] Range (min … max): 2.660 s … 2.887 s 5 runs - Output size: 57,757 bytes - Reduction: 3.50% TEST 5 rm -f pschmidt--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out pschmidt--oxipng-opt-max-zopfli-fast.png pschmidt.png Time (mean ± σ): 309.241 s ± 0.377 s [User: 312.732 s, System: 0.123 s] Range (min … max): 308.668 s … 309.629 s 5 runs - Output size: 55,989 bytes - Reduction: 6.45% TEST 6 rm -f pschmidt--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out pschmidt--oxipng-opt-max-zopfli.png pschmidt.png Time (mean ± σ): 408.220 s ± 2.683 s [User: 1707.226 s, System: 0.655 s] Range (min … max): 406.059 s … 412.665 s 5 runs - Output size: 55,989 bytes (sic) - Reduction: 6.45% TEST 7 rm -f pschmidt--cwebp-default.webp && cwebp -metadata all -lossless -exact -o pschmidt--cwebp-default.webp pschmidt.png Time (mean ± σ): 1.549 s ± 0.011 s [User: 1.506 s, System: 0.043 s] Range (min … max): 1.538 s … 1.567 s 5 runs - Output size: 7,420 bytes (sic) - Reduction: 87.60% TEST 8 WITH v1.6.0 rm -f pschmidt--cweb16p-default.webp && cwebp16 -metadata all -lossless -exact -o pschmidt--cwebp16-default.webp pschmidt.png Time (mean ± σ): 1.364 s ± 0.004 s [User: 1.324 s, System: 0.039 s] Range (min … max): 1.358 s … 1.369 s 5 runs - Output size: 7,420 bytes (sic) - Reduction: 87.60% TEST 8 rm -f pschmidt--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o pschmidt--cwebp-z9.webp pschmidt.png Time (mean ± σ): 6.965 s ± 0.252 s [User: 6.776 s, System: 0.188 s] Range (min … max): 6.753 s … 7.364 s 5 runs - Output size: 5,516 bytes (sic) - Reduction: 90.78% TEST 8 WITH v1.6.0 rm -f pschmidt--cweb16p-z9.webp && cwebp16 -metadata all -lossless -exact -z 9 -o pschmidt--cwebp16-z9.webp pschmidt.png Time (mean ± σ): 6.621 s ± 0.043 s [User: 6.417 s, System: 0.200 s] Range (min … max): 6.578 s … 6.668 s 5 runs - Output size: 5,516 bytes (sic) - Reduction: 90.78% radar-chart.png -------------------------------------------------------------------------------- - Filename: radar-chart.png - Original size: 121,683 bytes - Dimensions: 800 × 800 pixels - Number of colors: 2,039 TEST 1 rm -f radar-chart--optipng-default.png && optipng --out radar-chart--optipng-default.png radar-chart.png Time (mean ± σ): 542.6 ms ± 2.5 ms [User: 537.7 ms, System: 3.3 ms] Range (min … max): 540.5 ms … 546.9 ms 5 runs - Output size: 75,918 bytes - Reduction: 37.61% TEST 2 rm -f radar-chart--optipng-o7.png && optipng -o7 --out radar-chart--optipng-o7.png radar-chart.png Time (mean ± σ): 5.952 s ± 0.006 s [User: 5.942 s, System: 0.010 s] Range (min … max): 5.947 s … 5.961 s 5 runs - Output size: 75,918 bytes (sic) - Reduction: 37.61% TEST 3 rm -f radar-chart--oxipng-default.png && oxipng --out radar-chart--oxipng-default.png radar-chart.png Time (mean ± σ): 282.6 ms ± 1.2 ms [User: 310.0 ms, System: 20.4 ms] Range (min … max): 281.5 ms … 284.3 ms 5 runs - Output size: 73,402 bytes - Reduction: 39.68% TEST 4 rm -f radar-chart--oxipng-opt-max.png && oxipng --opt max --out radar-chart--oxipng-opt-max.png radar-chart.png Time (mean ± σ): 1.008 s ± 0.007 s [User: 8.206 s, System: 0.040 s] Range (min … max): 1.002 s … 1.019 s 5 runs - Output size: 71,484 bytes - Reduction: 41.25% TEST 5 rm -f radar-chart--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out radar-chart--oxipng-opt-max-zopfli-fast.png radar-chart.png Time (mean ± σ): 11.468 s ± 0.016 s [User: 11.684 s, System: 0.032 s] Range (min … max): 11.445 s … 11.485 s 5 runs - Output size: 68,927 bytes - Reduction: 43.36% TEST 6 rm -f radar-chart--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out radar-chart--oxipng-opt-max-zopfli.png radar-chart.png Time (mean ± σ): 19.364 s ± 0.552 s [User: 147.680 s, System: 0.263 s] Range (min … max): 18.396 s … 19.730 s 5 runs - Output size: 68,927 bytes (sic) - Reduction: 43.36% TEST 7 rm -f radar-chart--cwebp-default.webp && cwebp -metadata all -lossless -exact -o radar-chart--cwebp-default.webp radar-chart.png Time (mean ± σ): 182.0 ms ± 1.2 ms [User: 168.9 ms, System: 12.9 ms] Range (min … max): 180.7 ms … 183.4 ms 5 runs - Output size: 58,394 bytes - Reduction: 52.01% TEST 8 rm -f radar-chart--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o radar-chart--cwebp-z9.webp radar-chart.png Time (mean ± σ): 1.665 s ± 0.003 s [User: 1.642 s, System: 0.023 s] Range (min … max): 1.661 s … 1.670 s 5 runs - Output size: 44,408 bytes - Reduction: 63.51% spacefun.png -------------------------------------------------------------------------------- - Filename: spacefun.png - Original size: 5,305,726 bytes - Dimensions: 3840 × 2160 pixels - Number of colors: 24,501 TEST 1 rm -f spacefun--optipng-default.png && optipng --out spacefun--optipng-default.png spacefun.png Time (mean ± σ): 66.750 s ± 0.027 s [User: 66.714 s, System: 0.025 s] Range (min … max): 66.728 s … 66.789 s 5 runs - Output size: 4,389,224 bytes - Reduction: 17.27% TEST 2 rm -f spacefun--optipng-o7.png && optipng -o7 --out spacefun--optipng-o7.png spacefun.png Time (mean ± σ): 634.668 s ± 0.198 s [User: 634.497 s, System: 0.049 s] Range (min … max): 634.406 s … 634.925 s 5 runs - Output size: 3,586,404 bytes - Reduction: 32.41% TEST 3 rm -f spacefun--oxipng-default.png && oxipng --out spacefun--oxipng-default.png spacefun.png Time (mean ± σ): 7.958 s ± 0.010 s [User: 9.740 s, System: 0.046 s] Range (min … max): 7.950 s … 7.976 s 5 runs - Output size: 3,267,873 bytes - Reduction: 38.41% TEST 4 rm -f spacefun--oxipng-opt-max.png && oxipng --opt max --out spacefun--oxipng-opt-max.png spacefun.png Time (mean ± σ): 11.882 s ± 0.787 s [User: 98.023 s, System: 0.085 s] Range (min … max): 11.238 s … 12.786 s 5 runs - Output size: 3,270,858 bytes - Reduction: 38.35% TEST 5 rm -f spacefun--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out spacefun--oxipng-opt-max-zopfli-fast.png spacefun.png Time (mean ± σ): 430.480 s ± 0.680 s [User: 450.247 s, System: 0.120 s] Range (min … max): 429.870 s … 431.650 s 5 runs - Output size: 3,240,291 bytes - Reduction: 38.93% TEST 6 rm -f spacefun--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out spacefun--oxipng-opt-max-zopfli.png spacefun.png Time (mean ± σ): 626.792 s ± 19.150 s [User: 4987.471 s, System: 0.612 s] Range (min … max): 611.328 s … 658.735 s 5 runs - Output size: 3,240,291 bytes (sic) - Reduction: 38.93% TEST 7 rm -f spacefun--cwebp-default.webp && cwebp -metadata all -lossless -exact -o spacefun--cwebp-default.webp spacefun.png Time (mean ± σ): 2.778 s ± 0.022 s [User: 2.730 s, System: 0.048 s] Range (min … max): 2.765 s … 2.818 s 5 runs - Output size: 3,534,122 bytes - Reduction: 33.39% TEST 7 WITH v1.6.0 rm -f spacefun--cweb16p-default.webp && cwebp16 -metadata all -lossless -exact -o spacefun--cwebp16-default.webp spacefun.png Time (mean ± σ): 2.684 s ± 0.006 s [User: 2.632 s, System: 0.050 s] Range (min … max): 2.675 s … 2.691 s 5 runs - Output size: 3,528,004 bytes - Reduction: 33.51% TEST 8 rm -f spacefun--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o spacefun--cwebp-z9.webp spacefun.png Time (mean ± σ): 21.414 s ± 0.050 s [User: 21.326 s, System: 0.084 s] Range (min … max): 21.343 s … 21.460 s 5 run - Output size: 3,099,532 bytes - Reduction: 41.58% TEST 8 WITH -mt rm -f spacefun--cwebp-z9-mt.webp && cwebp -mt -metadata all -lossless -exact -z 9 -o spacefun--cwebp-z9-mt.webp spacefun.png Time (mean ± σ): 11.270 s ± 0.031 s [User: 21.732 s, System: 0.138 s] Range (min … max): 11.232 s … 11.300 s 5 runs TEST 8 WITH v1.6.0 rm -f spacefun--cweb16p-z9.webp && cwebp16 -metadata all -lossless -exact -z 9 -o spacefun--cwebp16-z9.webp spacefun.png Time (mean ± σ): 19.646 s ± 0.036 s [User: 19.571 s, System: 0.065 s] Range (min … max): 19.596 s … 19.691 s 5 runs - Output size: 3,100,116 bytes - Reduction: 41.57% stripe.com.png -------------------------------------------------------------------------------- - Filename: stripe.com.png - Original size: 401,189 bytes - Dimensions: 1678 × 1274 pixels - Number of colors: 63,894 TEST 1 rm -f stripe.com--optipng-default.png && optipng --out stripe.com--optipng-default.png stripe.com.png Time (mean ± σ): 3.449 s ± 0.001 s [User: 3.445 s, System: 0.004 s] Range (min … max): 3.448 s … 3.451 s 5 runs - Output size: 387,752 bytes - Reduction: 3.35% TEST 2 rm -f stripe.com--optipng-o7.png && optipng -o7 --out stripe.com--optipng-o7.png stripe.com.png Time (mean ± σ): 43.773 s ± 0.035 s [User: 43.752 s, System: 0.017 s] Range (min … max): 43.725 s … 43.803 s 5 runs - Output size: 374,414 bytes - Reduction: 6.67% TEST 3 rm -f stripe.com--oxipng-default.png && oxipng --out stripe.com--oxipng-default.png stripe.com.png Time (mean ± σ): 877.7 ms ± 1.5 ms [User: 1045.7 ms, System: 15.1 ms] Range (min … max): 876.0 ms … 879.6 ms 5 runs - Output size: 337,233 bytes - Reduction: 15.94% TEST 4 rm -f stripe.com--oxipng-opt-max.png && oxipng --opt max --out stripe.com--oxipng-opt-max.png stripe.com.png Time (mean ± σ): 1.897 s ± 0.111 s [User: 15.176 s, System: 0.044 s] Range (min … max): 1.794 s … 2.064 s 5 runs - Output size: 329,505 bytes - Reduction: 17.87% TEST 5 rm -f stripe.com--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out stripe.com--oxipng-opt-max-zopfli-fast.png stripe.com.png Time (mean ± σ): 37.605 s ± 0.052 s [User: 38.940 s, System: 0.044 s] Range (min … max): 37.552 s … 37.666 s 5 runs - Output size: 324,339 bytes - Reduction: 19.16% TEST 6 rm -f stripe.com--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out stripe.com--oxipng-opt-max-zopfli.png stripe.com.png Time (mean ± σ): 73.949 s ± 4.160 s [User: 489.147 s, System: 0.227 s] Range (min … max): 66.923 s … 77.777 s 5 runs - Output size: 324,339 bytes - Reduction: 19.16% TEST 7 rm -f stripe.com--cwebp-default.webp && cwebp -metadata all -lossless -exact -o stripe.com--cwebp-default.webp stripe.com.png Time (mean ± σ): 461.5 ms ± 2.0 ms [User: 450.1 ms, System: 11.1 ms] Range (min … max): 459.7 ms … 464.9 ms 5 runs - Output size: 272,116 bytes - Reduction: 32.17% TEST 8 rm -f stripe.com--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o stripe.com--cwebp-z9.webp stripe.com.png Time (mean ± σ): 5.542 s ± 0.010 s [User: 5.525 s, System: 0.016 s] Range (min … max): 5.532 s … 5.558 s 5 runs - Output size: 263,618 bytes - Reduction: 34.29% vitejs-logo.png -------------------------------------------------------------------------------- - Filename: vitejs-logo.png - Original size: 25,663 bytes - Dimensions: 487 × 480 pixels - Number of colors: 2,844 TEST 1 rm -f vitejs-logo--optipng-default.png && optipng --out vitejs-logo--optipng-default.png vitejs-logo.png Time (mean ± σ): 146.6 ms ± 0.5 ms [User: 143.9 ms, System: 2.6 ms] Range (min … max): 146.2 ms … 147.5 ms 5 runs - Output size: 22,750 bytes - Reduction: 11.35% TEST 2 rm -f vitejs-logo--optipng-o7.png && optipng -o7 --out vitejs-logo--optipng-o7.png vitejs-logo.png Time (mean ± σ): 2.175 s ± 0.004 s [User: 2.168 s, System: 0.007 s] Range (min … max): 2.170 s … 2.179 s 5 runs - Output size: 22,750 bytes - Reduction: 11.35% TEST 3 rm -f vitejs-logo--oxipng-default.png && oxipng --out vitejs-logo--oxipng-default.png vitejs-logo.png Time (mean ± σ): 88.2 ms ± 0.8 ms [User: 100.3 ms, System: 9.4 ms] Range (min … max): 87.4 ms … 89.4 ms 5 runs - Output size: 22,433 bytes - Reduction: 12.59% TEST 3 with --alpha rm -f vitejs-logo--oxipng-default-alpha.png && oxipng --alpha --out vitejs-logo--oxipng-default-alpha.png vitejs-logo.png Time (mean ± σ): 95.0 ms ± 0.4 ms [User: 113.5 ms, System: 8.2 ms] Range (min … max): 94.8 ms … 95.7 ms 5 runs - Output size: 22,433 bytes (sic) - Reduction: 12.59% TEST 4 rm -f vitejs-logo--oxipng-opt-max.png && oxipng --opt max --out vitejs-logo--oxipng-opt-max.png vitejs-logo.png Time (mean ± σ): 404.8 ms ± 14.1 ms [User: 3162.0 ms, System: 28.9 ms] Range (min … max): 385.7 ms … 418.8 ms 5 runs - Output size: 22,064 bytes - Reduction: 14.02% TEST 4 with --alpha rm -f vitejs-logo--oxipng-opt-max-alpha.png && oxipng --opt max --alpha --out vitejs-logo--oxipng-opt-max-alpha.png vitejs-logo.png Time (mean ± σ): 418.4 ms ± 10.6 ms [User: 3258.3 ms, System: 37.0 ms] Range (min … max): 405.9 ms … 427.4 ms 5 runs - Output size: 21,217 bytes - Reduction: 17.32% TEST 5 rm -f vitejs-logo--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out vitejs-logo--oxipng-opt-max-zopfli-fast.png vitejs-logo.png Time (mean ± σ): 3.975 s ± 0.004 s [User: 4.081 s, System: 0.026 s] Range (min … max): 3.971 s … 3.982 s 5 runs - Output size: 21,467 bytes - Reduction: 16.35% TEST 5 with --alpha rm -f vitejs-logo--oxipng-opt-max-zopfli-fast-alpha.png && oxipng --opt max --zopfli --fast --alpha --out vitejs-logo--oxipng-opt-max-zopfli-fast-alpha.png vitejs-logo.png Time (mean ± σ): 3.981 s ± 0.007 s [User: 4.119 s, System: 0.020 s] Range (min … max): 3.970 s … 3.987 s 5 runs - Output size: 21,467 bytes (sic) - Reduction: 16.35% TEST 6 rm -f vitejs-logo--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out vitejs-logo--oxipng-opt-max-zopfli.png vitejs-logo.png Time (mean ± σ): 10.469 s ± 0.091 s [User: 81.550 s, System: 0.177 s] Range (min … max): 10.346 s … 10.564 s 5 runs - Output size: 21,467 bytes - Reduction: 16.35% TEST 6 with --alpha rm -f vitejs-logo--oxipng-opt-max-zopfli-alpha.png && oxipng --opt max --zopfli --alpha --out vitejs-logo--oxipng-opt-max-zopfli-alpha.png vitejs-logo.png Time (mean ± σ): 10.351 s ± 0.362 s [User: 80.884 s, System: 0.207 s] Range (min … max): 10.067 s … 10.968 s 5 runs - Output size: 20,467 - Reduction: 20.71% TEST 7 rm -f vitejs-logo--cwebp-default.webp && cwebp -metadata all -lossless -exact -o vitejs-logo--cwebp-default.webp vitejs-logo.png Time (mean ± σ): 75.0 ms ± 0.5 ms [User: 68.3 ms, System: 6.6 ms] Range (min … max): 74.5 ms … 75.8 ms 5 runs - Output size: 19,324 bytes - Reduction: 24.70% TEST 8 rm -f vitejs-logo--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o vitejs-logo--cwebp-z9.webp vitejs-logo.png Time (mean ± σ): 1.042 s ± 0.003 s [User: 1.029 s, System: 0.011 s] Range (min … max): 1.038 s … 1.045 s 5 runs - Output size: 16,868 bytes - Reduction: 34.27% wsl-logo.png -------------------------------------------------------------------------------- - Filename: wsl-logo.png - Original size: 19,038 bytes - Dimensions: 256 × 256 pixels - Number of colors: 1,623 TEST 1 rm -f wsl-logo--optipng-default.png && optipng --out wsl-logo--optipng-default.png wsl-logo.png Time (mean ± σ): 119.0 ms ± 0.5 ms [User: 118.0 ms, System: 0.9 ms] Range (min … max): 118.5 ms … 119.8 ms 5 runs - Output size: 19,038 bytes (sic) - Reduction: 0.00% TEST 2 rm -f wsl-logo--optipng-o7.png && optipng -o7 --out wsl-logo--optipng-o7.png wsl-logo.png Time (mean ± σ): 1.930 s ± 0.003 s [User: 1.924 s, System: 0.006 s] Range (min … max): 1.927 s … 1.933 s 5 runs - Output size: 19,038 bytes (sic) - Reduction: 0.00% TEST 3 rm -f wsl-logo--oxipng-default.png && oxipng --out wsl-logo--oxipng-default.png wsl-logo.png Time (mean ± σ): 72.6 ms ± 0.7 ms [User: 78.4 ms, System: 7.0 ms] Range (min … max): 71.8 ms … 73.6 ms 5 runs - Output size: 17,906 bytes - Reduction: 5.95% TEST 3 with --alpha rm -f wsl-logo--oxipng-default-alpha.png && oxipng --alpha --out wsl-logo--oxipng-default-alpha.png wsl-logo.png Time (mean ± σ): 73.4 ms ± 0.3 ms [User: 78.5 ms, System: 8.8 ms] Range (min … max): 73.1 ms … 73.7 ms 5 runs - Output size: 17,422 bytes - Reduction: 8.49% TEST 4 rm -f wsl-logo--oxipng-opt-max.png && oxipng --opt max --out wsl-logo--oxipng-opt-max.png wsl-logo.png Time (mean ± σ): 161.1 ms ± 4.7 ms [User: 1192.2 ms, System: 21.8 ms] Range (min … max): 156.2 ms … 167.3 ms 5 runs - Output size: 17,018 bytes - Reduction: 10.61% TEST 4 with --alpha rm -f wsl-logo--oxipng-opt-max-alpha.png && oxipng --opt max --alpha --out wsl-logo--oxipng-opt-max-alpha.png wsl-logo.png Time (mean ± σ): 160.5 ms ± 4.8 ms [User: 1254.3 ms, System: 16.9 ms] Range (min … max): 155.2 ms … 168.1 ms 5 runs - Output size: 16,938 bytes - Reduction: 11.03% TEST 5 rm -f wsl-logo--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --fast --out wsl-logo--oxipng-opt-max-zopfli-fast.png wsl-logo.png Time (mean ± σ): 2.275 s ± 0.010 s [User: 2.336 s, System: 0.020 s] Range (min … max): 2.263 s … 2.290 s 5 runs - Output size: 16,655 bytes - Reduction: 12.52% TEST 5 with --alpha rm -f wsl-logo--oxipng-opt-max-zopfli-fast-alpha.png && oxipng --opt max --zopfli --fast --alpha --out wsl-logo--oxipng-opt-max-zopfli-fast-alpha.png wsl-logo.png Time (mean ± σ): 2.133 s ± 0.017 s [User: 2.196 s, System: 0.025 s] Range (min … max): 2.115 s … 2.154 s 5 runs - Output size: 16,535 bytes - Reduction: 13.15% TEST 6 rm -f wsl-logo--oxipng-opt-max-zopfli.png && oxipng --opt max --zopfli --out wsl-logo--oxipng-opt-max-zopfli.png wsl-logo.png Time (mean ± σ): 3.163 s ± 0.111 s [User: 24.769 s, System: 0.074 s] Range (min … max): 2.975 s … 3.258 s 5 runs - Output size: 16,655 bytes - Reduction: 12.52% TEST 6 with --alpha rm -f wsl-logo--oxipng-opt-max-zopfli-fast.png && oxipng --opt max --zopfli --alpha --out wsl-logo--oxipng-opt-max-zopfli-alpha.png wsl-logo.png Time (mean ± σ): 3.114 s ± 0.092 s [User: 24.346 s, System: 0.063 s] Range (min … max): 2.987 s … 3.240 s 5 runs - Output size: 16,535 bytes - Reduction: 13.15% TEST 7 rm -f wsl-logo--cwebp-default.webp && cwebp -metadata all -lossless -exact -o wsl-logo--cwebp-default.webp wsl-logo.png Time (mean ± σ): 49.1 ms ± 0.4 ms [User: 43.3 ms, System: 5.8 ms] Range (min … max): 48.7 ms … 49.8 ms 5 runs - Output size: 12,980 bytes - Reduction: 31.82% TEST 8 rm -f wsl-logo--cwebp-z9.webp && cwebp -metadata all -lossless -exact -z 9 -o wsl-logo--cwebp-z9.webp wsl-logo.png Time (mean ± σ): 597.4 ms ± 4.2 ms [User: 587.5 ms, System: 8.9 ms] Range (min … max): 593.7 ms … 604.1 ms 5 runs - Output size: 12,544 bytes - Reduction: 34.11%