Data for the PNG compression tests published on op111.net in September 2025
================================================================================

Author: Demetris Kikizas

File revision: 2
File revision started: 2025-09-20
File revision completed: 2025-10-02

See: https://op111.net/posts/2025/09/png-compression-oxipng-optipng-fileoptimizer-cwebp/



d3js.org.png
--------------------------------------------------------------------------------

-   Filename: d3js.org.png
-   Original size: 1493211 bytes
-   Dimensions: 1600 × 1205 pixels
-   Number of colors: 168716

TEST 1: optipng v0.7.8, default
rm -f d3js.org--opti078-default.png && optipng --out d3js.org--opti078-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
Original size: 1493211 bytes
Output size: 1113706 bytes
Reduction: 25.42%

TEST 1: optipng v0.7.8, -strip all
rm -f d3js.org--opti078-strip-all.png && optipng -strip all --out d3js.org--opti078-strip-all.png d3js.org.png
  Time (mean ± σ):      2.635 s ±  0.001 s    [User: 2.626 s, System: 0.008 s]
  Range (min … max):    2.635 s …  2.637 s    5 runs
Original size: 1493211 bytes
Output size: 1113706 bytes
Reduction: 25.42%

TEST 2: optipng v0.7.8, -o 7
rm -f d3js.org--opti078-o-7.png && optipng -o 7 --out d3js.org--opti078-o-7.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
Original size: 1493211 bytes
Output size: 1112055 bytes
Reduction: 25.53%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f d3js.org--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out d3js.org--opti078-o-7-strip-all.png d3js.org.png
  Time (mean ± σ):     32.800 s ±  0.022 s    [User: 32.765 s, System: 0.030 s]
  Range (min … max):   32.768 s … 32.828 s    5 runs
Original size: 1493211 bytes
Output size: 1112055 bytes
Reduction: 25.53%

TEST 3: oxipng v9.1.5, default
rm -f d3js.org--oxi915-default.png && oxipng --out d3js.org--oxi915-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 runs
Original size: 1493211 bytes
Output size: 1058046 bytes
Reduction: 29.14%

TEST 3: oxipng v9.1.5, --strip safe
rm -f d3js.org--oxi915-strip-safe.png && oxipng -s --out d3js.org--oxi915-strip-safe.png d3js.org.png
  Time (mean ± σ):     763.0 ms ±   0.7 ms    [User: 932.1 ms, System: 16.2 ms]
  Range (min … max):   762.2 ms … 763.9 ms    5 runs
Original size: 1493211 bytes
Output size: 1058046 bytes
Reduction: 29.14%

TEST 4: oxipng v9.1.5, --opt max
rm -f d3js.org--oxi915-opt-max.png && oxipng -o max --out d3js.org--oxi915-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
Original size: 1493211 bytes
Output size: 1046446 bytes
Reduction: 29.92%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f d3js.org--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out d3js.org--oxi915-opt-max-strip-safe.png d3js.org.png
  Time (mean ± σ):      1.965 s ±  0.089 s    [User: 14.920 s, System: 0.058 s]
  Range (min … max):    1.851 s …  2.053 s    5 runs
Original size: 1493211 bytes
Output size: 1046446 bytes
Reduction: 29.92%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f d3js.org--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out d3js.org--oxi915-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
Original size: 1493211 bytes
Output size: 1041552 bytes
Reduction: 30.25%

TEST 5, oxipng v9.1.5, --opt max --zopfli --fast, WINDOWS 11
del d3js.org--oxi915-opt-max-zopfli-fast-w11.png 2>NUL && oxipng -o max -Z --fast --out d3js.org--oxi915-opt-max-zopfli-fast-w11.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
Original size: 1493211 bytes
Output size: 1041552 bytes
Reduction: 30.25%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f d3js.org--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out d3js.org--oxi915-opt-max-zopfli-fast-strip-safe.png d3js.org.png
  Time (mean ± σ):     20.524 s ±  0.037 s    [User: 21.640 s, System: 0.068 s]
  Range (min … max):   20.462 s … 20.554 s    5 runs
Original size: 1493211 bytes
Output size: 1041552 bytes
Reduction: 30.25%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f d3js.org--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out d3js.org--oxi915-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
Original size: 1493211 bytes
Output size: 1041552 bytes (sic)
Reduction: 30.25%

TEST 6: oxipng v9.1.5, --opt max --zopfli, WINDOWS 11
del d3js.org--oxi915-opt-max-zopfli-w11.png 2>NUL && oxipng -o max -Z --out d3js.org--oxi915-opt-max-zopfli-w11.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
Original size: 1493211 bytes
Output size: 1041552 bytes (sic)
Reduction: 30.25%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f d3js.org--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out d3js.org--oxi915-opt-max-zopfli-strip-safe.png d3js.org.png
  Time (mean ± σ):     28.896 s ±  0.669 s    [User: 243.736 s, System: 0.510 s]
  Range (min … max):   27.973 s … 29.810 s    5 runs
Original size: 1493211 bytes
Output size: 1041552 bytes (sic)
Reduction: 30.25%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f d3js.org--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o d3js.org--cwebp150-lossless-exact-metadata-all.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
Original size: 1493211 bytes
Output size: 828992 bytes
Reduction: 44.48%

TEST 7: cwebp v1.6.0, -metadata all -lossless -exact
rm -f d3js.org--cwebp160-lossless-exact-metadata-all.webp && cwebp160 -lossless -exact -metadata all -o d3js.org--cwebp160-lossless-exact-metadata-all.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
Original size: 1493211 bytes
Output size: 829552 bytes
Reduction: 44.45%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f d3js.org--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o d3js.org--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 1493211 bytes
Output size: 813606 bytes
Reduction: 45.51%

TEST 8: cwebp v1.6.0, -lossless -z 9 -exact -metadata all
rm -f d3js.org--cwebp160-lossless-z-9-exact-metadata-all.webp && cwebp160 -lossless -z 9 -exact -metadata all -o d3js.org--cwebp160-lossless-z-9-exact-metadata-all.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
Original size: 1493211 bytes
Output size: 813552 bytes
Reduction: 45.52%



debian-desktop.png
--------------------------------------------------------------------------------

-   Filename: debian-desktop.png
-   Original size: 707471 bytes
-   Dimensions: 2560 × 1440 pixels
-   Number of colors: 20322

TEST 1: optipng v0.7.8, default
rm -f debian-desktop--opti078-default.png && optipng --out debian-desktop--opti078-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 runs
Original size: 707471 bytes
Output size: 464555 bytes
Reduction: 34.34%

TEST 1: optipng v0.7.8, -strip all
rm -f debian-desktop--opti078-strip-all.png && optipng -strip all --out debian-desktop--opti078-strip-all.png debian-desktop.png
  Time (mean ± σ):      3.094 s ±  0.006 s    [User: 3.086 s, System: 0.006 s]
  Range (min … max):    3.091 s …  3.104 s    5 runs
Original size: 707471 bytes
Output size: 464448 bytes
Reduction: 34.35%

TEST 2: optipng v0.7.8, -o 7
rm -f debian-desktop--opti078-o-7.png && optipng -o 7 --out debian-desktop--opti078-o-7.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
Original size: 707471 bytes
Output size: 464555 bytes (sic)
Reduction: 34.34%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f debian-desktop--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out debian-desktop--opti078-o-7-strip-all.png debian-desktop.png
  Time (mean ± σ):     52.045 s ±  0.070 s    [User: 52.015 s, System: 0.022 s]
  Range (min … max):   51.999 s … 52.166 s    5 runs
Original size: 707471 bytes
Output size: 464448 bytes (sic)
Reduction: 34.35%

TEST 3: oxipng v9.1.5, default
rm -f debian-desktop--oxi915-default.png && oxipng --out debian-desktop--oxi915-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
Original size: 707471 bytes
Output size: 448544 bytes
Reduction: 36.60%

TEST 3: oxipng v9.1.5, --strip safe
rm -f debian-desktop--oxi915-strip-safe.png && oxipng -s --out debian-desktop--oxi915-strip-safe.png debian-desktop.png
  Time (mean ± σ):      1.491 s ±  0.001 s    [User: 1.826 s, System: 0.019 s]
  Range (min … max):    1.490 s …  1.492 s    5 runs
Original size: 707471 bytes
Output size: 448452 bytes
Reduction: 36.61%

TEST 4: oxipng v9.1.5, --opt max
rm -f debian-desktop--oxi915-opt-max.png && oxipng -o max --out debian-desktop--oxi915-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
Original size: 707471 bytes
Output size: 392710 bytes
Reduction: 44.49%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f debian-desktop--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out debian-desktop--oxi915-opt-max-strip-safe.png debian-desktop.png
  Time (mean ± σ):      6.990 s ±  0.148 s    [User: 56.719 s, System: 0.056 s]
  Range (min … max):    6.803 s …  7.187 s    5 runs
Original size: 707471 bytes
Output size: 392618 bytes
Reduction: 44.50%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f debian-desktop--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out debian-desktop--oxi915-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
Original size: 707471 bytes
Output size: 431815 bytes
Reduction: 38.96%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f debian-desktop--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out debian-desktop--oxi915-opt-max-zopfli-fast-strip-safe.png debian-desktop.png
  Time (mean ± σ):     64.241 s ±  0.160 s    [User: 66.774 s, System: 0.085 s]
  Range (min … max):   64.068 s … 64.460 s    5 runs
Original size: 707471 bytes
Output size: 431723 bytes
Reduction: 38.98%

TEST 5, oxipng v9.1.5, --opt max --zopfli --fast, WINDOWS 11
del debian-desktop--oxi915-opt-max-zopfli-fast-strip-safe-w11.png 2>NUL && oxipng -o max -Z --fast --out debian-desktop--oxi915-opt-max-zopfli-fast-strip-safe-w11.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
Original size: 707471 bytes
Output size: 431815 bytes
Reduction: 38.96%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f debian-desktop--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out debian-desktop--oxi915-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
Original size: 707471 bytes
Output size: 382459 bytes
Reduction: 45.94%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f debian-desktop--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out debian-desktop--oxi915-opt-max-zopfli-strip-safe.png debian-desktop.png
  Time (mean ± σ):     162.742 s ±  8.721 s    [User: 1267.040 s, System: 0.467 s]
  Range (min … max):   148.957 s … 172.107 s    5 runs
Original size: 707471 bytes
Output size: 382367 bytes
Reduction: 45.95%

TEST 6: oxipng v9.1.5, --opt max --zopfli --, WINDOWS 11
del debian-desktop--oxi915-opt-max-zopfli-w11.png 2>NUL && oxipng -o max -Z --out debian-desktop--oxi915-opt-max-zopfli-w11.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
Original size: 707471 bytes
Output size: 382459 bytes
Reduction: 45.94%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f debian-desktop--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o debian-desktop--cwebp150-lossless-exact-metadata-all.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
Original size: 707471 bytes
Output size: 328602 bytes
Reduction: 53.55%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f debian-desktop--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o debian-desktop--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 707471 bytes
Output size: 264570 bytes
Reduction: 62.60%



drought-map.png
--------------------------------------------------------------------------------

-   Filename: drought-map.png
-   Original size: 976919 bytes
-   Dimensions: 2012 × 2293 pixels
-   Number of colors: 4772

TEST 1: optipng v0.7.8, default
rm -f drought-map--opti078-default.png && optipng --out drought-map--opti078-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
Original size: 976919 bytes
Output size: 646102 bytes
Reduction: 33.86%

TEST 1: optipng v0.7.8, -strip all
rm -f drought-map--opti078-strip-all.png && optipng -strip all --out drought-map--opti078-strip-all.png drought-map.png
  Time (mean ± σ):      2.561 s ±  0.005 s    [User: 2.553 s, System: 0.007 s]
  Range (min … max):    2.557 s …  2.569 s    5 runs
Original size: 976919 bytes
Output size: 646081 bytes
Reduction: 33.85%

TEST 2: optipng v0.7.8, -o 7
rm -f drought-map--opti078-o-7.png && optipng -o 7 --out drought-map--opti078-o-7.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
Original size: 976919 bytes
Output size: 646102 bytes (sic)
Reduction: 33.86%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f drought-map--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out drought-map--opti078-o-7-strip-all.png drought-map.png
  Time (mean ± σ):     24.281 s ±  0.026 s    [User: 24.249 s, System: 0.029 s]
  Range (min … max):   24.256 s … 24.314 s    5 runs
Original size: 976919 bytes
Output size: 646081 bytes (sic)
Reduction: 33.85%

TEST 3: oxipng v9.1.5, default
rm -f drought-map--oxi915-default.png && oxipng --out drought-map--oxi915-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
Original size: 976919 bytes
Output size: 601965 bytes
Reduction: 38.38%

TEST 3: oxipng v9.1.5, --strip safe
rm -f drought-map--oxi915-strip-safe.png && oxipng -s --out drought-map--oxi915-strip-safe.png drought-map.png
  Time (mean ± σ):      1.625 s ±  0.003 s    [User: 1.860 s, System: 0.025 s]
  Range (min … max):    1.622 s …  1.630 s    5 runs
Original size: 976919 bytes
Output size: 601965 bytes
Reduction: 38.38%

TEST 4: oxipng v9.1.5, --opt max
rm -f drought-map--oxi915-opt-max.png && oxipng -o max --out drought-map--oxi915-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
Original size: 976919 bytes
Output size: 589602 bytes
Reduction: 39.65%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f drought-map--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out drought-map--oxi915-opt-max-strip-safe.png drought-map.png
  Time (mean ± σ):      5.348 s ±  0.152 s    [User: 43.457 s, System: 0.046 s]
  Range (min … max):    5.169 s …  5.515 s    5 runs
Original size: 976919 bytes
Output size: 589602 bytes
Reduction: 39.65%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f drought-map--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out drought-map--oxi915-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
Original size: 976919 bytes
Output size: 580993 bytes
Reduction: 40.53%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f drought-map--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out drought-map--oxi915-opt-max-zopfli-fast-strip-safe.png drought-map.png
  Time (mean ± σ):     85.707 s ±  0.183 s    [User: 87.110 s, System: 0.079 s]
  Range (min … max):   85.541 s … 86.015 s    5 runs
Original size: 976919 bytes
Output size: 580993 bytes
Reduction: 40.53%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f drought-map--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out drought-map--oxi915-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
Original size: 976919 bytes
Output size: 580993 bytes (sic)
Reduction: 40.53%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f drought-map--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out drought-map--oxi915-opt-max-zopfli-strip-safe.png drought-map.png
  Time (mean ± σ):     110.950 s ±  7.699 s    [User: 792.877 s, System: 0.540 s]
  Range (min … max):   97.914 s … 117.802 s    5 runs
Original size: 976919 bytes
Output size: 580993 bytes (sic)
Reduction: 40.53%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f drought-map--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o drought-map--cwebp150-lossless-exact-metadata-all.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
Original size: 976919 bytes
Output size: 374356 bytes
Reduction: 61.68%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f drought-map--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o drought-map--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 976919 bytes
Output size: 369064 bytes
Reduction: 62.22%



github.com-repo.png
--------------------------------------------------------------------------------

-   Filename: github.com-repo.png
-   Original size: 269531 bytes
-   Dimensions: 1352 × 1105 pixels
-   Number of colors: 5720

TEST 1: optipng v0.7.8, default
rm -f github.com-repo--opti078-default.png && optipng --out github.com-repo--opti078-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
Original size: 269531 bytes
Output size: 178507 bytes
Reduction: 33.77%

TEST 1: optipng v0.7.8, -strip all
rm -f github.com-repo--opti078-strip-all.png && optipng -strip all --out github.com-repo--opti078-strip-all.png github.com-repo.png
  Time (mean ± σ):     759.5 ms ±   2.7 ms    [User: 755.4 ms, System: 2.7 ms]
  Range (min … max):   757.5 ms … 764.3 ms    5 runs
Original size: 269531 bytes
Output size: 178507 bytes
Reduction: 33.77%

TEST 2: optipng v0.7.8, -o 7
rm -f github.com-repo--opti078-o-7.png && optipng -o 7 --out github.com-repo--opti078-o-7.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
Original size: 269531 bytes
Output size: 178445 bytes
Reduction: 33.79%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f github.com-repo--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out github.com-repo--opti078-o-7-strip-all.png github.com-repo.png
  Time (mean ± σ):      7.916 s ±  0.006 s    [User: 7.889 s, System: 0.026 s]
  Range (min … max):    7.906 s …  7.924 s    5 runs
Original size: 269531 bytes
Output size: 178445 bytes
Reduction: 33.79%

TEST 3: oxipng v9.1.5, default
rm -f github.com-repo--oxi915-default.png && oxipng --out github.com-repo--oxi915-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
Original size: 269531 bytes
Output size: 169022 bytes
Reduction: 37.29%

TEST 3: oxipng v9.1.5, --strip safe
rm -f github.com-repo--oxi915-strip-safe.png && oxipng -s --out github.com-repo--oxi915-strip-safe.png github.com-repo.png
  Time (mean ± σ):     314.2 ms ±   2.1 ms    [User: 368.3 ms, System: 18.7 ms]
  Range (min … max):   311.8 ms … 316.5 ms    5 runs
Original size: 269531 bytes
Output size: 169022 bytes
Reduction: 37.29%

TEST 4: oxipng v9.1.5, --opt max
rm -f github.com-repo--oxi915-opt-max.png && oxipng -o max --out github.com-repo--oxi915-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
Original size: 269531 bytes
Output size: 167590 bytes
Reduction: 37.82%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f github.com-repo--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out github.com-repo--oxi915-opt-max-strip-safe.png github.com-repo.png
  Time (mean ± σ):     904.1 ms ±  37.2 ms    [User: 7169.2 ms, System: 44.9 ms]
  Range (min … max):   848.9 ms … 940.2 ms    5 runs
Original size: 269531 bytes
Output size: 167590 bytes
Reduction: 37.82%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f github.com-repo--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out github.com-repo--oxi915-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
Original size: 269531 bytes
Output size: 162970 bytes
Reduction: 39.54%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f github.com-repo--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out github.com-repo--oxi915-opt-max-zopfli-fast-strip-safe.png github.com-repo.png
  Time (mean ± σ):     21.438 s ±  0.066 s    [User: 21.759 s, System: 0.066 s]
  Range (min … max):   21.325 s … 21.499 s    5 runs
Original size: 269531 bytes
Output size: 162970 bytes
Reduction: 39.54%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f github.com-repo--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out github.com-repo--oxi915-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
Original size: 269531 bytes
Output size: 162970 bytes
Reduction: 39.54%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f github.com-repo--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out github.com-repo--oxi915-opt-max-zopfli-strip-safe.png github.com-repo.png
  Time (mean ± σ):     25.707 s ±  2.057 s    [User: 194.833 s, System: 0.399 s]
  Range (min … max):   23.281 s … 27.605 s    5 runs
Original size: 269531 bytes
Output size: 162970 bytes
Reduction: 39.54%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f github.com-repo--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o github.com-repo--cwebp150-lossless-exact-metadata-all.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
Original size: 269531 bytes
Output size: 76358 bytes
Reduction: 71.67%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f github.com-repo--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o github.com-repo--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 269531 bytes
Output size: 70084 bytes
Reduction: 74.00%



goaccess.io-demo.png
--------------------------------------------------------------------------------

-   Filename: goaccess.io-demo.png
-   Original size: 325494 bytes
-   Dimensions: 1600 × 1205 pixels
-   Number of colors:

TEST 1: optipng v0.7.8, default
rm -f goaccess.io-demo--opti078-default.png && optipng --out goaccess.io-demo--opti078-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
Original size: 325494 bytes
Output size: 218045 bytes
Reduction: 33.01%

TEST 1: optipng v0.7.8, -strip all
rm -f goaccess.io-demo--opti078-strip-all.png && optipng -strip all --out goaccess.io-demo--opti078-strip-all.png goaccess.io-demo.png
  Time (mean ± σ):     985.7 ms ±   3.4 ms    [User: 980.3 ms, System: 3.7 ms]
  Range (min … max):   982.8 ms … 991.6 ms    5 runs
Original size: 325494 bytes
Output size: 218045 bytes
Reduction: 33.01%

TEST 2: optipng v0.7.8, -o 7
rm -f goaccess.io-demo--opti078-o-7.png && optipng -o 7 --out goaccess.io-demo--opti078-o-7.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
Original size: 325494 bytes
Output size: 218045 bytes (sic)
Reduction: 33.01%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f goaccess.io-demo--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out goaccess.io-demo--opti078-o-7-strip-all.png goaccess.io-demo.png
  Time (mean ± σ):     10.105 s ±  0.015 s    [User: 10.077 s, System: 0.026 s]
  Range (min … max):   10.080 s … 10.118 s    5 runs
Original size: 325494 bytes
Output size: 218045 bytes (sic)
Reduction: 33.01%

TEST 3: oxipng v9.1.5, default
rm -f goaccess.io-demo--oxi915-default.png && oxipng --out goaccess.io-demo--oxi915-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
Original size: 325494 bytes
Output size: 201055 bytes
Reduction: 38.23%

TEST 3: oxipng v9.1.5, --strip safe
rm -f goaccess.io-demo--oxi915-strip-safe.png && oxipng -s --out goaccess.io-demo--oxi915-strip-safe.png goaccess.io-demo.png
  Time (mean ± σ):     605.9 ms ±   3.8 ms    [User: 686.4 ms, System: 19.3 ms]
  Range (min … max):   603.1 ms … 612.6 ms    5 runs
Original size: 325494 bytes
Output size: 201055 bytes
Reduction: 38.23%

TEST 4: oxipng v9.1.5, --opt max
rm -f goaccess.io-demo--oxi915-opt-max.png && oxipng -o max --out goaccess.io-demo--oxi915-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
Original size: 325494 bytes
Output size: 193235 bytes
Reduction: 40.63%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f goaccess.io-demo--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out goaccess.io-demo--oxi915-opt-max-strip-safe.png goaccess.io-demo.png
  Time (mean ± σ):      1.448 s ±  0.020 s    [User: 11.191 s, System: 0.046 s]
  Range (min … max):    1.423 s …  1.465 s    5 runs
Original size: 325494 bytes
Output size: 193235 bytes
Reduction: 40.63%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f goaccess.io-demo--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out goaccess.io-demo--oxi915-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
Original size: 325494 bytes
Output size: 189059 bytes
Reduction: 41.92%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f goaccess.io-demo--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out goaccess.io-demo--oxi915-opt-max-zopfli-fast-strip-safe.png goaccess.io-demo.png
  Time (mean ± σ):     32.439 s ±  0.121 s    [User: 32.916 s, System: 0.051 s]
  Range (min … max):   32.251 s … 32.571 s    5 runs
Original size: 325494 bytes
Output size: 189059 bytes
Reduction: 41.92%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f goaccess.io-demo--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out goaccess.io-demo--oxi915-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
Original size: 325494 bytes
Output size: 189059 bytes (sic)
Reduction: 41.92%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f goaccess.io-demo--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out goaccess.io-demo--oxi915-opt-max-zopfli-strip-safe.png goaccess.io-demo.png
  Time (mean ± σ):     39.578 s ±  3.986 s    [User: 283.333 s, System: 0.257 s]
  Range (min … max):   35.165 s … 43.150 s    5 runs
Original size: 325494 bytes
Output size: 189059 bytes (sic)
Reduction: 41.92%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f goaccess.io-demo--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o goaccess.io-demo--cwebp150-lossless-exact-metadata-all.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
Original size: 325494 bytes
Output size: 89142 bytes
Reduction: 72.61%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f goaccess.io-demo--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o goaccess.io-demo--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 325494 bytes
Output size: 88022 bytes
Reduction: 72.96%



html5-logo.png
--------------------------------------------------------------------------------

-   Filename: html5-logo.png
-   Original size: 8562 bytes
-   Dimensions: 512 × 512 pixels
-   Number of colors: 84

TEST 1: optipng v0.7.8, default
rm -f html5-logo--opti078-default.png && optipng --out html5-logo--opti078-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
Original size: 8562 bytes
Output size: 4780 bytes
Reduction: 44.17%

TEST 1: optipng v0.7.8, -strip all
rm -f html5-logo--opti078-strip-all.png && optipng -strip all --out html5-logo--opti078-strip-all.png html5-logo.png
  Time (mean ± σ):      65.4 ms ±   3.1 ms    [User: 60.7 ms, System: 3.3 ms]
  Range (min … max):    63.6 ms …  70.8 ms    5 runs
Original size: 8562 bytes
Output size: 4743 bytes
Reduction: 44.60%

TEST 2: optipng v0.7.8, -o 7
rm -f html5-logo--opti078-o-7.png && optipng -o 7 --out html5-logo--opti078-o-7.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
Original size: 8562 bytes
Output size: 4,780 bytes (sic)
Reduction: 44.17%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f html5-logo--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out html5-logo--opti078-o-7-strip-all.png html5-logo.png
  Time (mean ± σ):     621.0 ms ±   1.7 ms    [User: 616.0 ms, System: 4.9 ms]
  Range (min … max):   619.8 ms … 623.9 ms    5 runs
Original size: 8562 bytes
Output size: 4743 bytes (sic)
Reduction: 44.60%

TEST 3: oxipng v9.1.5, default
rm -f html5-logo--oxi915-default.png && oxipng --out html5-logo--oxi915-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
Original size: 8562 bytes
Output size: 5147 bytes
Reduction: 39.89%

TEST 3: oxipng v9.1.5, --strip safe
rm -f html5-logo--oxi915-strip-safe.png && oxipng -s --out html5-logo--oxi915-strip-safe.png html5-logo.png
  Time (mean ± σ):      52.6 ms ±   0.8 ms    [User: 54.7 ms, System: 6.5 ms]
  Range (min … max):    51.8 ms …  53.7 ms    5 runs
Original size: 8562 bytes
Output size: 5110 bytes
Reduction: 40.32%

TEST 4: oxipng v9.1.5, --opt max
rm -f html5-logo--oxi915-opt-max.png && oxipng -o max --out html5-logo--oxi915-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
Original size: 8562 bytes
Output size: 4429 bytes
Reduction: 48.27%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f html5-logo--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out html5-logo--oxi915-opt-max-strip-safe.png html5-logo.png
  Time (mean ± σ):     188.7 ms ±  14.1 ms    [User: 1406.2 ms, System: 20.9 ms]
  Range (min … max):   177.5 ms … 212.3 ms    5 runs
Original size: 8562 bytes
Output size: 4392 bytes
Reduction: 48.70%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f html5-logo--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out html5-logo--oxi915-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
Original size: 8562 bytes
Output size: 4273 bytes
Reduction: 50.09%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f html5-logo--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out html5-logo--oxi915-opt-max-zopfli-fast-strip-safe.png html5-logo.png
  Time (mean ± σ):      2.046 s ±  0.002 s    [User: 2.072 s, System: 0.018 s]
  Range (min … max):    2.043 s …  2.049 s    5 runs
Original size: 8562 bytes
Output size: 4236 bytes
Reduction: 50.53%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f html5-logo--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out html5-logo--oxi915-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
Original size: 8562 bytes
Output size: 4131 bytes
Reduction: 51.75%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f html5-logo--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out html5-logo--oxi915-opt-max-zopfli-strip-safe.png html5-logo.png
  Time (mean ± σ):      3.448 s ±  0.059 s    [User: 27.841 s, System: 0.068 s]
  Range (min … max):    3.377 s …  3.539 s    5 runs
Original size: 8562 bytes
Output size: 4094 bytes
Reduction: 52.18%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f html5-logo--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o html5-logo--cwebp150-lossless-exact-metadata-all.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
Original size: 8562 bytes
Output size: 3416 bytes
Reduction: 60.10%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f html5-logo--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o html5-logo--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 8562 bytes
Output size: 3460 bytes
Reduction: 59.59%



mediawiki-logo.png
--------------------------------------------------------------------------------

-   Filename: mediawiki-logo.png
-   Original size: 28656 bytes
-   Dimensions: 270 × 300 pixels
-   Number of colors: 4635

TEST 1: optipng v0.7.8, default
rm -f mediawiki-logo--opti078-default.png && optipng --out mediawiki-logo--opti078-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
Original size: 28656 bytes
Output size: 25941 bytes
Reduction: 9.47%

TEST 1: optipng v0.7.8, -strip all
rm -f mediawiki-logo--opti078-strip-all.png && optipng -strip all --out mediawiki-logo--opti078-strip-all.png mediawiki-logo.png
  Time (mean ± σ):     147.5 ms ±   0.1 ms    [User: 146.4 ms, System: 0.9 ms]
  Range (min … max):   147.4 ms … 147.7 ms    5 runs
Original size: 28656 bytes
Output size: 25746 bytes
Reduction: 10.15%

TEST 2: optipng v0.7.8, -o 7
rm -f mediawiki-logo--opti078-o-7.png && optipng -o 7 --out mediawiki-logo--opti078-o-7.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
Original size: 28656 bytes
Output size: 25941 bytes (sic)
Reduction: 9.47%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f mediawiki-logo--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out mediawiki-logo--opti078-o-7-strip-all.png mediawiki-logo.png
  Time (mean ± σ):      2.027 s ±  0.002 s    [User: 2.011 s, System: 0.015 s]
  Range (min … max):    2.025 s …  2.031 s    5 runs
Original size: 28656 bytes
Output size: 25746 bytes (sic)
Reduction: 10.15%

TEST 3: oxipng v9.1.5, default
rm -f mediawiki-logo--oxi915-default.png && oxipng --out mediawiki-logo--oxi915-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
Original size: 28656 bytes
Output size: 24632 bytes
Reduction: 14.04%

TEST 3: oxipng v9.1.5, --strip safe
rm -f mediawiki-logo--oxi915-strip-safe.png && oxipng -s --out mediawiki-logo--oxi915-strip-safe.png mediawiki-logo.png
  Time (mean ± σ):      46.6 ms ±   0.8 ms    [User: 49.8 ms, System: 8.8 ms]
  Range (min … max):    45.8 ms …  47.6 ms    5 runs
Original size: 28656 bytes
Output size: 24437 bytes
Reduction: 14.72%

TEST 4: oxipng v9.1.5, --opt max
rm -f mediawiki-logo--oxi915-opt-max.png && oxipng -o max --out mediawiki-logo--oxi915-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
Original size: 28656 bytes
Output size: 24664 bytes
Reduction: 13.93%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f mediawiki-logo--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out mediawiki-logo--oxi915-opt-max-strip-safe.png mediawiki-logo.png
  Time (mean ± σ):     171.1 ms ±   6.3 ms    [User: 1343.3 ms, System: 28.7 ms]
  Range (min … max):   165.7 ms … 181.3 ms    5 runs
Original size: 28656 bytes
Output size: 24469 bytes
Reduction: 14.61%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f mediawiki-logo--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out mediawiki-logo--oxi915-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
Original size: 28656 bytes
Output size: 24211 bytes
Reduction: 15.51%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f mediawiki-logo--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out mediawiki-logo--oxi915-opt-max-zopfli-fast-strip-safe.png mediawiki-logo.png
  Time (mean ± σ):      1.376 s ±  0.005 s    [User: 1.429 s, System: 0.017 s]
  Range (min … max):    1.368 s …  1.382 s    5 runs
Original size: 28656 bytes
Output size: 24016 bytes
Reduction: 16.19%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f mediawiki-logo--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out mediawiki-logo--oxi915-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
Original size: 28656 bytes
Output size: 24211 bytes (sic)
Reduction: 15.51%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f mediawiki-logo--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out mediawiki-logo--oxi915-opt-max-zopfli-strip-safe.png mediawiki-logo.png
  Time (mean ± σ):      2.817 s ±  0.104 s    [User: 22.099 s, System: 0.081 s]
  Range (min … max):    2.694 s …  2.902 s    5 runs
Original size: 28656 bytes
Output size: 24016 bytes
Reduction: 16.19%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f mediawiki-logo--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o mediawiki-logo--cwebp150-lossless-exact-metadata-all.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
Original size: 28656 bytes
Output size: 19830 bytes
Reduction: 30.80%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f mediawiki-logo--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o mediawiki-logo--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 28656 bytes
Output size: 17918 bytes
Reduction: 37.47%



powertoys.png
--------------------------------------------------------------------------------

-   Filename: powertoys.png
-   Original size: 244630 bytes
-   Dimensions: 1230 × 917 pixels
-   Number of colors: 18791

TEST 1: optipng v0.7.8, default
rm -f powertoys--opti078-default.png && optipng --out powertoys--opti078-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
Original size: 244630 bytes
Output size: 230325 bytes
Reduction: 5.85%

TEST 1: optipng v0.7.8, -strip all
rm -f powertoys--opti078-strip-all.png && optipng -strip all --out powertoys--opti078-strip-all.png powertoys.png
  Time (mean ± σ):     959.5 ms ±   2.9 ms    [User: 955.1 ms, System: 2.9 ms]
  Range (min … max):   956.9 ms … 964.3 ms    5 runs
Original size: 244630 bytes
Output size: 230045 bytes
Reduction: 5.96%

TEST 2: optipng v0.7.8, -o 7
rm -f powertoys--opti078-o-7.png && optipng -o 7 --out powertoys--opti078-o-7.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
Original size: 244630 bytes
Output size: 229920 bytes
Reduction: 6.01%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f powertoys--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out powertoys--opti078-o-7-strip-all.png powertoys.png
  Time (mean ± σ):     11.832 s ±  0.006 s    [User: 11.813 s, System: 0.017 s]
  Range (min … max):   11.825 s … 11.839 s    5 runs
Original size: 244630 bytes
Output size: 229640 bytes
Reduction: 6.13%

TEST 3: oxipng v9.1.5, default
rm -f powertoys--oxi915-default.png && oxipng --out powertoys--oxi915-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
Original size: 244630 bytes
Output size: 201533 bytes
Reduction: 17.62%

TEST 3: oxipng v9.1.5, --strip safe
rm -f powertoys--oxi915-strip-safe.png && oxipng -s --out powertoys--oxi915-strip-safe.png powertoys.png
  Time (mean ± σ):     268.0 ms ±   3.1 ms    [User: 327.4 ms, System: 17.2 ms]
  Range (min … max):   265.8 ms … 273.4 ms    5 runs
Original size: 244630 bytes
Output size: 201287 bytes
Reduction: 17.72%

TEST 4: oxipng v9.1.5, --opt max
rm -f powertoys--oxi915-opt-max.png && oxipng -o max --out powertoys--oxi915-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
Original size: 244630 bytes
Output size: 198008 bytes
Reduction: 19.06%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f powertoys--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out powertoys--oxi915-opt-max-strip-safe.png powertoys.png
  Time (mean ± σ):     726.6 ms ±  32.2 ms    [User: 5370.4 ms, System: 43.3 ms]
  Range (min … max):   670.6 ms … 750.1 ms    5 runs
Original size: 244630 bytes
Output size: 197762 bytes
Reduction: 19.16%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f powertoys--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out powertoys--oxi915-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
Original size: 244630 bytes
Output size: 194709 bytes
Reduction: 20.41%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f powertoys--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out powertoys--oxi915-opt-max-zopfli-fast-strip-safe.png powertoys.png
  Time (mean ± σ):      8.669 s ±  0.020 s    [User: 9.110 s, System: 0.038 s]
  Range (min … max):    8.648 s …  8.693 s    5 runs
Original size: 244630 bytes
Output size: 194463 bytes
Reduction: 20.51%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f powertoys--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out powertoys--oxi915-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
Original size: 244630 bytes
Output size: 194709 bytes
Reduction: 20.41%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f powertoys--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out powertoys--oxi915-opt-max-zopfli-strip-safe.png powertoys.png
  Time (mean ± σ):     14.980 s ±  0.874 s    [User: 114.403 s, System: 0.171 s]
  Range (min … max):   13.526 s … 15.791 s    5 runs
Original size: 244630 bytes
Output size: 194463 bytes
Reduction: 20.51%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f powertoys--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o powertoys--cwebp150-lossless-exact-metadata-all.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
Original size: 244630 bytes
Output size: 144246 bytes
Reduction: 41.04%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f powertoys--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o powertoys--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 244630 bytes
Output size: 140090 bytes
Reduction: 42.73%



pschmidt.png
--------------------------------------------------------------------------------

-   Filename: pschmidt.png
-   Original size: 59852 bytes
-   Dimensions: 4096 × 4096 pixels
-   Number of colors: 16777216

TEST 1: optipng v0.7.8, default
rm -f pschmidt--opti078-default.png && optipng --out pschmidt--opti078-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
Original size: 59852 bytes
Output size: 59591 bytes
Reduction: 0.44%

TEST 1: optipng v0.7.8, -strip all
rm -f pschmidt--opti078-strip-all.png && optipng -strip all --out pschmidt--opti078-strip-all.png pschmidt.png
  Time (mean ± σ):      2.511 s ±  0.002 s    [User: 2.487 s, System: 0.022 s]
  Range (min … max):    2.509 s …  2.512 s    5 runs
Original size: 59852 bytes
Output size: 59591 bytes
Reduction: 0.44%

TEST 2: optipng v0.7.8, -o 7
rm -f pschmidt--opti078-o-7.png && optipng -o 7 --out pschmidt--opti078-o-7.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
Original size: 59852 bytes
Output size: 59457 bytes
Reduction: 0.66%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f pschmidt--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out pschmidt--opti078-o-7-strip-all.png pschmidt.png
  Time (mean ± σ):     32.032 s ±  0.231 s    [User: 31.990 s, System: 0.037 s]
  Range (min … max):   31.783 s … 32.409 s    5 runs
Original size: 59852 bytes
Output size: 59457 bytes
Reduction: 0.66%

TEST 3: oxipng v9.1.5, default
rm -f pschmidt--oxi915-default.png && oxipng --out pschmidt--oxi915-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
Original size: 59852 bytes
Output size: 59840 bytes
Reduction: 0.02%

TEST 3: oxipng v9.1.5, --strip safe
rm -f pschmidt--oxi915-strip-safe.png && oxipng -s --out pschmidt--oxi915-strip-safe.png pschmidt.png
  Time (mean ± σ):      1.411 s ±  0.004 s    [User: 2.397 s, System: 0.041 s]
  Range (min … max):    1.408 s …  1.417 s    5 runs
Original size: 59852 bytes
Output size: 59840 bytes
Reduction: 0.02%

TEST 4: oxipng v9.1.5, --opt max
rm -f pschmidt--oxi915-opt-max.png && oxipng -o max --out pschmidt--oxi915-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
Original size: 59852 bytes
Output size: 57757 bytes
Reduction: 3.50%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f pschmidt--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out pschmidt--oxi915-opt-max-strip-safe.png pschmidt.png
  Time (mean ± σ):      2.766 s ±  0.132 s    [User: 16.804 s, System: 0.100 s]
  Range (min … max):    2.653 s …  2.925 s    5 runs
Original size: 59852 bytes
Output size: 57757 bytes
Reduction: 3.50%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast, WINDOWS 11
del pschmidt--oxi915-opt-max-zopfli-fast-w11.png 2>NUL && oxipng -o max -Z --fast --out pschmidt--oxi915-opt-max-zopfli-fast-w11.png pschmidt.png
  Time (mean ± σ):     235.108 s ±  0.892 s    [User: 237.082 s, System: 1.456 s]
  Range (min … max):   234.060 s … 236.128 s    5 runs
Original size: 59852 bytes
Output size: 55989 bytes
Reduction: 6.45%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f pschmidt--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out pschmidt--oxi915-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
Original size: 59852 bytes
Output size: 55989 bytes
Reduction: 6.45%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f pschmidt--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out pschmidt--oxi915-opt-max-zopfli-fast-strip-safe.png pschmidt.png
  Time (mean ± σ):     311.166 s ±  1.811 s    [User: 314.677 s, System: 0.127 s]
  Range (min … max):   309.867 s … 314.343 s    5 runs
Original size: 59852 bytes
Output size: 55989 bytes
Reduction: 6.45%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f pschmidt--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out pschmidt--oxi915-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
Original size: 59852 bytes
Output size: 55989 bytes (sic)
Reduction: 6.45%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f pschmidt--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out pschmidt--oxi915-opt-max-zopfli-strip-safe.png pschmidt.png
  Time (mean ± σ):     405.053 s ±  6.546 s    [User: 1701.843 s, System: 0.579 s]
  Range (min … max):   396.777 s … 411.068 s    5 runs
Original size: 59852 bytes
Output size: 55989 bytes (sic)
Reduction: 6.45%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f pschmidt--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o pschmidt--cwebp150-lossless-exact-metadata-all.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
Original size: 59852 bytes
Output size: 7420 bytes (sic)
Reduction: 87.60%

TEST 8: cwebp v1.6.0, -metadata all -lossless -exact
rm -f pschmidt--cwebp160-lossless-exact-metadata-all.webp && cwebp160 -lossless -exact -metadata all -o pschmidt--cwebp160-lossless-exact-metadata-all.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
Original size: 59852 bytes
Output size: 7420 bytes (sic)
Reduction: 87.60%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f pschmidt--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o pschmidt--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 59852 bytes
Output size: 5516 bytes (sic)
Reduction: 90.78%

TEST 8: cwebp v1.6.0, -lossless -z 9 -exact -metadata all
rm -f pschmidt--cwebp160-lossless-z-9-exact-metadata-all.webp && cwebp160 -lossless -z 9 -exact -metadata all -o pschmidt--cwebp160-lossless-z-9-exact-metadata-all.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
Original size: 59852 bytes
Output size: 5516 bytes (sic)
Reduction: 90.78%



radar-chart.png
--------------------------------------------------------------------------------

-   Filename: radar-chart.png
-   Original size: 121683 bytes
-   Dimensions: 800 × 800 pixels
-   Number of colors: 2039

TEST 1: optipng v0.7.8, default
rm -f radar-chart--opti078-default.png && optipng --out radar-chart--opti078-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
Original size: 121683 bytes
Output size: 75918 bytes
Reduction: 37.61%

TEST 1: optipng v0.7.8, -strip all
rm -f radar-chart--opti078-strip-all.png && optipng -strip all --out radar-chart--opti078-strip-all.png radar-chart.png
  Time (mean ± σ):     541.0 ms ±   4.0 ms    [User: 537.3 ms, System: 2.2 ms]
  Range (min … max):   538.2 ms … 548.0 ms    5 runs
Original size: 121683 bytes
Output size: 75918 bytes
Reduction: 37.61%

TEST 2: optipng v0.7.8, -o 7
rm -f radar-chart--opti078-o-7.png && optipng -o 7 --out radar-chart--opti078-o-7.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
Original size: 121683 bytes
Output size: 75918 bytes (sic)
Reduction: 37.61%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f radar-chart--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out radar-chart--opti078-o-7-strip-all.png radar-chart.png
  Time (mean ± σ):      5.939 s ±  0.005 s    [User: 5.921 s, System: 0.016 s]
  Range (min … max):    5.932 s …  5.945 s    5 runs
Original size: 121683 bytes
Output size: 75918 bytes (sic)
Reduction: 37.61%

TEST 3: oxipng v9.1.5, default
rm -f radar-chart--oxi915-default.png && oxipng --out radar-chart--oxi915-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
Original size: 121683 bytes
Output size: 73402 bytes
Reduction: 39.68%

TEST 3: oxipng v9.1.5, --strip safe
rm -f radar-chart--oxi915-strip-safe.png && oxipng -s --out radar-chart--oxi915-strip-safe.png radar-chart.png
  Time (mean ± σ):     284.8 ms ±   3.1 ms    [User: 312.8 ms, System: 18.9 ms]
  Range (min … max):   282.8 ms … 290.2 ms    5 runs
Original size: 121683 bytes
Output size: 73402 bytes
Reduction: 39.68%

TEST 4: oxipng v9.1.5, --opt max
rm -f radar-chart--oxi915-opt-max.png && oxipng -o max --out radar-chart--oxi915-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
Original size: 121683 bytes
Output size: 71484 bytes
Reduction: 41.25%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f radar-chart--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out radar-chart--oxi915-opt-max-strip-safe.png radar-chart.png
  Time (mean ± σ):      1.022 s ±  0.013 s    [User: 8.201 s, System: 0.047 s]
  Range (min … max):    1.005 s …  1.040 s    5 runs
Original size: 121683 bytes
Output size: 71484 bytes
Reduction: 41.25%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f radar-chart--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out radar-chart--oxi915-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
Original size: 121683 bytes
Output size: 68927 bytes
Reduction: 43.36%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f radar-chart--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out radar-chart--oxi915-opt-max-zopfli-fast-strip-safe.png radar-chart.png
  Time (mean ± σ):     11.592 s ±  0.060 s    [User: 11.795 s, System: 0.047 s]
  Range (min … max):   11.498 s … 11.655 s    5 runs
Original size: 121683 bytes
Output size: 68927 bytes
Reduction: 43.36%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f radar-chart--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out radar-chart--oxi915-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
Original size: 121683 bytes
Output size: 68927 bytes (sic)
Reduction: 43.36%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f radar-chart--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out radar-chart--oxi915-opt-max-zopfli-strip-safe.png radar-chart.png
  Time (mean ± σ):     19.313 s ±  0.684 s    [User: 149.200 s, System: 0.300 s]
  Range (min … max):   18.458 s … 19.974 s    5 runs
Original size: 121683 bytes
Output size: 68927 bytes (sic)
Reduction: 43.36%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f radar-chart--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o radar-chart--cwebp150-lossless-exact-metadata-all.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
Original size: 121683 bytes
Output size: 58394 bytes
Reduction: 52.01%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f radar-chart--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o radar-chart--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 121683 bytes
Output size: 44408 bytes
Reduction: 63.51%



spacefun.png
--------------------------------------------------------------------------------

-   Filename: spacefun.png
-   Original size: 5305726 bytes
-   Dimensions: 3840 × 2160 pixels
-   Number of colors: 24501

TEST 1: optipng v0.7.8, default
rm -f spacefun--opti078-default.png && optipng --out spacefun--opti078-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
Original size: 5305726 bytes
Output size: 4389224 bytes
Reduction: 17.27%

TEST 1: optipng v0.7.8, -strip all
rm -f spacefun--opti078-strip-all.png && optipng -strip all --out spacefun--opti078-strip-all.png spacefun.png
  Time (mean ± σ):     67.269 s ±  0.332 s    [User: 67.234 s, System: 0.025 s]
  Range (min … max):   66.923 s … 67.774 s    5 runs
Original size: 5305726 bytes
Output size: 4389166 bytes
Reduction: 17.27%

TEST 2: optipng v0.7.8, -o 7
rm -f spacefun--opti078-o-7.png && optipng -o 7 --out spacefun--opti078-o-7.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
Original size: 5305726 bytes
Output size: 3586404 bytes
Reduction: 32.41%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f spacefun--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out spacefun--opti078-o-7-strip-all.png spacefun.png
  Time (mean ± σ):     645.563 s ±  1.167 s    [User: 644.751 s, System: 0.776 s]
  Range (min … max):   643.529 s … 646.441 s    5 runs
Original size: 5305726 bytes
Output size: 3586346 bytes
Reduction: 32.40%

TEST 3: oxipng v9.1.5, default
rm -f spacefun--oxi915-default.png && oxipng --out spacefun--oxi915-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
Original size: 5305726 bytes
Output size: 3267873 bytes
Reduction: 38.41%

TEST 3: oxipng v9.1.5, --strip safe
rm -f spacefun--oxi915-strip-safe.png && oxipng -s --out spacefun--oxi915-strip-safe.png spacefun.png
  Time (mean ± σ):      7.968 s ±  0.008 s    [User: 9.757 s, System: 0.044 s]
  Range (min … max):    7.954 s …  7.976 s    5 runs
Original size: 5305726 bytes
Output size: 3267836 bytes
Reduction: 38.41%

TEST 4: oxipng v9.1.5, --opt max
rm -f spacefun--oxi915-opt-max.png && oxipng -o max --out spacefun--oxi915-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
Original size: 5305726 bytes
Output size: 3270858 bytes
Reduction: 38.35%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f spacefun--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out spacefun--oxi915-opt-max-strip-safe.png spacefun.png
  Time (mean ± σ):     12.013 s ±  0.661 s    [User: 98.817 s, System: 0.097 s]
  Range (min … max):   11.216 s … 12.707 s    5 runs
Original size: 5305726 bytes
Output size: 3270821 bytes
Reduction: 38.35%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f spacefun--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out spacefun--oxi915-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
Original size: 5305726 bytes
Output size: 3240291 bytes
Reduction: 38.93%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast, WINDOWS 11
del spacefun--oxi915-opt-max-zopfli-fast-w11.png 2>NUL && oxipng -o max -Z --fast --out spacefun--oxi915-opt-max-zopfli-fast-w11.png spacefun.png
  Time (mean ± σ):     409.277 s ±  0.606 s    [User: 430.896 s, System: 1.210 s]
  Range (min … max):   408.482 s … 409.953 s    5 runs
Original size: 5305726 bytes
Output size: 3240291 bytes
Reduction: 38.93%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f spacefun--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out spacefun--oxi915-opt-max-zopfli-fast-strip-safe.png spacefun.png
  Time (mean ± σ):     432.944 s ±  0.745 s    [User: 452.754 s, System: 0.125 s]
  Range (min … max):   431.927 s … 433.591 s    5 runs
Original size: 5305726 bytes
Output size: 3240254 bytes
Reduction: 38.93%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f spacefun--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out spacefun--oxi915-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
Original size: 5305726 bytes
Output size: 3240291 bytes (sic)
Reduction: 38.93%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f spacefun--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out spacefun--oxi915-opt-max-zopfli-strip-safe.png spacefun.png
  Time (mean ± σ):     636.815 s ± 14.064 s    [User: 5025.225 s, System: 0.658 s]
  Range (min … max):   620.244 s … 656.859 s    5 runs
Original size: 5305726 bytes
Output size: 3240254 bytes
Reduction: 38.93%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f spacefun--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o spacefun--cwebp150-lossless-exact-metadata-all.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
Original size: 5305726 bytes
Output size: 3534122 bytes
Reduction: 33.39%

TEST 7 WITH v1.6.0
rm -f spacefun--cwebp160-lossless-exact-metadata-all.webp && cwebp160 -lossless -exact -metadata all -o spacefun--cwebp160-lossless-exact-metadata-all.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
Original size: 5305726 bytes
Output size: 3528004 bytes
Reduction: 33.51%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f spacefun--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o spacefun--cwebp150-lossless-z-9-exact-metadata-all.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 runs
Original size: 5305726 bytes
Output size: 3099532 bytes
Reduction: 41.58%

TEST 8: cwebp v1.5.0, -lossless -z 9 -mt -exact -metadata all
rm -f spacefun--cwebp-lossless-z-9-mt-exact-metadata-all.webp && cwebp -lossless -z 9 -mt -exact -metadata all -o spacefun--cwebp-lossless-z-9-mt-exact-metadata-all.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: cwebp v1.6.0, -lossless -z 9 -exact -metadata all
rm -f spacefun--cwebp160-lossless-z-9-exact-metadata-all.webp && cwebp160 -lossless -z 9 -exact -metadata all -o spacefun--cwebp160-lossless-z-9-exact-metadata-all.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
Original size: 5305726 bytes
Output size: 3100116 bytes
Reduction: 41.57%



stripe.com.png
--------------------------------------------------------------------------------

-   Filename: stripe.com.png
-   Original size: 401189 bytes
-   Dimensions: 1678 × 1274 pixels
-   Number of colors: 63894

TEST 1: optipng v0.7.8, default
rm -f stripe.com--opti078-default.png && optipng --out stripe.com--opti078-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
Original size: 401189 bytes
Output size: 387752 bytes
Reduction: 3.35%

TEST 1: optipng v0.7.8, -strip all
rm -f stripe.com--opti078-strip-all.png && optipng -strip all --out stripe.com--opti078-strip-all.png stripe.com.png
  Time (mean ± σ):      3.494 s ±  0.011 s    [User: 3.483 s, System: 0.011 s]
  Range (min … max):    3.484 s …  3.509 s    5 runs
Original size: 401189 bytes
Output size: 387752 bytes
Reduction: 3.35%

TEST 2: optipng v0.7.8, -o 7
rm -f stripe.com--opti078-o-7.png && optipng -o 7 --out stripe.com--opti078-o-7.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
Original size: 401189 bytes
Output size: 374414 bytes
Reduction: 6.67%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f stripe.com--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out stripe.com--opti078-o-7-strip-all.png stripe.com.png
  Time (mean ± σ):     44.269 s ±  0.084 s    [User: 44.224 s, System: 0.043 s]
  Range (min … max):   44.180 s … 44.386 s    5 runs
Original size: 401189 bytes
Output size: 374414 bytes
Reduction: 6.67%

TEST 3: oxipng v9.1.5, default
rm -f stripe.com--oxi915-default.png && oxipng --out stripe.com--oxi915-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
Original size: 401189 bytes
Output size: 337233 bytes
Reduction: 15.94%

TEST 3: oxipng v9.1.5, --strip safe
rm -f stripe.com--oxi915-strip-safe.png && oxipng -s --out stripe.com--oxi915-strip-safe.png stripe.com.png
  Time (mean ± σ):     880.9 ms ±   3.9 ms    [User: 1045.7 ms, System: 17.7 ms]
  Range (min … max):   876.5 ms … 886.8 ms    5 runs
Original size: 401189 bytes
Output size: 337233 bytes
Reduction: 15.94%

TEST 4: oxipng v9.1.5, --opt max
rm -f stripe.com--oxi915-opt-max.png && oxipng -o max --out stripe.com--oxi915-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
Original size: 401189 bytes
Output size: 329505 bytes
Reduction: 17.87%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f stripe.com--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out stripe.com--oxi915-opt-max-strip-safe.png stripe.com.png
  Time (mean ± σ):      1.898 s ±  0.116 s    [User: 15.385 s, System: 0.052 s]
  Range (min … max):    1.804 s …  2.075 s    5 runs
Original size: 401189 bytes
Output size: 329505 bytes
Reduction: 17.87%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast, WINDOWS 11
del stripe.com--oxi915-opt-max-zopfli-fast-w11.png 2>NUL && oxipng -o max -Z --fast --out stripe.com--oxi915-opt-max-zopfli-fast-w11.png stripe.com.png
  Time (mean ± σ):     34.190 s ±  0.140 s    [User: 35.319 s, System: 0.346 s]
  Range (min … max):   33.983 s … 34.314 s    5 runs
Original size: 401189 bytes
Output size: 324339 bytes
Reduction: 19.16%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f stripe.com--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out stripe.com--oxi915-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
Original size: 401189 bytes
Output size: 324339 bytes
Reduction: 19.16%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f stripe.com--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out stripe.com--oxi915-opt-max-zopfli-fast-strip-safe.png stripe.com.png
  Time (mean ± σ):     37.574 s ±  0.097 s    [User: 38.929 s, System: 0.044 s]
  Range (min … max):   37.454 s … 37.717 s    5 runs
Original size: 401189 bytes
Output size: 324339 bytes
Reduction: 19.16%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f stripe.com--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out stripe.com--oxi915-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
Original size: 401189 bytes
Output size: 324339 bytes
Reduction: 19.16%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f stripe.com--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out stripe.com--oxi915-opt-max-zopfli-strip-safe.png stripe.com.png
  Time (mean ± σ):     73.162 s ±  4.946 s    [User: 486.415 s, System: 0.253 s]
  Range (min … max):   67.417 s … 78.418 s    5 runs
Original size: 401189 bytes
Output size: 324339 bytes
Reduction: 19.16%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f stripe.com--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o stripe.com--cwebp150-lossless-exact-metadata-all.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
Original size: 401189 bytes
Output size: 272116 bytes
Reduction: 32.17%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f stripe.com--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o stripe.com--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 401189 bytes
Output size: 263618 bytes
Reduction: 34.29%



vitejs-logo.png
--------------------------------------------------------------------------------

-   Filename: vitejs-logo.png
-   Original size: 25663 bytes
-   Dimensions: 487 × 480 pixels
-   Number of colors: 2844

TEST 1: optipng v0.7.8, default
rm -f vitejs-logo--opti078-default.png && optipng --out vitejs-logo--opti078-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
Original size: 25663 bytes
Output size: 22750 bytes
Reduction: 11.35%

TEST 1: optipng v0.7.8, -strip all
rm -f vitejs-logo--opti078-strip-all.png && optipng -strip all --out vitejs-logo--opti078-strip-all.png vitejs-logo.png
  Time (mean ± σ):     147.0 ms ±   3.4 ms    [User: 143.8 ms, System: 1.7 ms]
  Range (min … max):   144.8 ms … 152.9 ms    5 runs
Original size: 25663 bytes
Output size: 22555 bytes
Reduction: 12.11%

TEST 2: optipng v0.7.8, -o 7
rm -f vitejs-logo--opti078-o-7.png && optipng -o 7 --out vitejs-logo--opti078-o-7.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
Original size: 25663 bytes
Output size: 22750 bytes (sic)
Reduction: 11.35%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f vitejs-logo--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out vitejs-logo--opti078-o-7-strip-all.png vitejs-logo.png
  Time (mean ± σ):      2.185 s ±  0.004 s    [User: 2.175 s, System: 0.010 s]
  Range (min … max):    2.181 s …  2.192 s    5 runs
Original size: 25663 bytes
Output size: 22555 bytes (sic)
Reduction: 12.11%

TEST 3: oxipng v9.1.5, default
rm -f vitejs-logo--oxi915-default.png && oxipng --out vitejs-logo--oxi915-default.png vitejs-logo.png
  Time (mean ± σ):      88.1 ms ±   0.5 ms    [User: 100.5 ms, System: 8.7 ms]
  Range (min … max):    87.2 ms …  88.6 ms    5 runs
Original size: 25663 bytes
Output size: 22433 bytes
Reduction: 12.59%

TEST 3: oxipng v9.1.5, --strip safe
rm -f vitejs-logo--oxi915-strip-safe.png && oxipng -s --out vitejs-logo--oxi915-strip-safe.png vitejs-logo.png
  Time (mean ± σ):      88.7 ms ±   1.2 ms    [User: 103.0 ms, System: 7.2 ms]
  Range (min … max):    87.5 ms …  90.5 ms    5 runs
Original size: 25663 bytes
Output size: 22238 bytes
Reduction: 13.35%

TEST 3: oxipng v9.1.5, --alpha
rm -f vitejs-logo--oxi915-alpha.png && oxipng --alpha --out vitejs-logo--oxi915-alpha.png vitejs-logo.png
  Time (mean ± σ):      94.6 ms ±   0.5 ms    [User: 111.2 ms, System: 11.5 ms]
  Range (min … max):    94.0 ms …  95.2 ms    5 runs
Original size: 25663 bytes
Output size: 22433 bytes
Reduction: 12.59%

TEST 3: oxipng v9.1.5, --strip safe --alpha
rm -f vitejs-logo--oxi915-alpha-strip-safe.png && oxipng --alpha -s --out vitejs-logo--oxi915-alpha-strip-safe.png vitejs-logo.png
  Time (mean ± σ):      94.2 ms ±   0.5 ms    [User: 118.0 ms, System: 3.4 ms]
  Range (min … max):    93.7 ms …  94.8 ms    5 runs
Original size: 25663 bytes
Output size: 22238 bytes
Reduction: 13.35%

TEST 4: oxipng v9.1.5, --opt max
rm -f vitejs-logo--oxi915-opt-max.png && oxipng -o max --out vitejs-logo--oxi915-opt-max.png vitejs-logo.png
  Time (mean ± σ):     398.4 ms ±  11.4 ms    [User: 3143.1 ms, System: 28.7 ms]
  Range (min … max):   389.0 ms … 417.5 ms    5 runs
Original size: 25663 bytes
Output size: 22064 bytes
Reduction: 14.02%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f vitejs-logo--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out vitejs-logo--oxi915-opt-max-strip-safe.png vitejs-logo.png
  Time (mean ± σ):     401.6 ms ±  10.8 ms    [User: 3128.2 ms, System: 37.4 ms]
  Range (min … max):   391.2 ms … 413.2 ms    5 runs
Original size: 25663 bytes
Output size: 21869 bytes
Reduction: 14.78%

TEST 4: oxipng v9.1.5, --opt max --alpha
rm -f vitejs-logo--oxi915-opt-max-alpha.png && oxipng -o max --alpha --out vitejs-logo--oxi915-opt-max-alpha.png vitejs-logo.png
  Time (mean ± σ):     417.3 ms ±  13.6 ms    [User: 3260.5 ms, System: 29.6 ms]
  Range (min … max):   402.4 ms … 428.1 ms    5 runs
Original size: 25663 bytes
Output size: 21217 bytes
Reduction: 17.33%

TEST 4: optipng v9.1.5, --opt max --strip safe --alpha
rm -f vitejs-logo--oxi915-opt-max-alpha-strip-safe.png && oxipng -o max --alpha -s --out vitejs-logo--oxi915-opt-max-alpha-strip-safe.png vitejs-logo.png
  Time (mean ± σ):     413.1 ms ±   4.5 ms    [User: 3276.1 ms, System: 16.9 ms]
  Range (min … max):   407.9 ms … 416.6 ms    5 runs
Original size: 25663 bytes
Output size: 21022 bytes
Reduction: 18.09%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f vitejs-logo--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out vitejs-logo--oxi915-opt-max-zopfli-fast.png vitejs-logo.png
  Time (mean ± σ):      3.966 s ±  0.005 s    [User: 4.074 s, System: 0.024 s]
  Range (min … max):    3.961 s …  3.971 s    5 runs
Original size: 25663 bytes
Output size: 21467 bytes
Reduction: 16.35%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f vitejs-logo--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out vitejs-logo--oxi915-opt-max-zopfli-fast-strip-safe.png vitejs-logo.png
  Time (mean ± σ):      3.962 s ±  0.006 s    [User: 4.059 s, System: 0.031 s]
  Range (min … max):    3.956 s …  3.972 s    5 runs
Original size: 25663 bytes
Output size: 21272 bytes
Reduction: 17.11%

TEST 5 WITH --alpha
rm -f vitejs-logo--oxi915-opt-max-zopfli-fast-alpha.png && oxipng -o max -Z --fast --alpha --out vitejs-logo--oxi915-opt-max-zopfli-fast-alpha.png vitejs-logo.png
  Time (mean ± σ):      3.973 s ±  0.006 s    [User: 4.109 s, System: 0.022 s]
  Range (min … max):    3.966 s …  3.983 s    5 runs
Original size: 25663 bytes
Output size: 21467 bytes
Reduction: 16.35%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --alpha --strip safe
rm -f vitejs-logo--oxi915-opt-max-zopfli-fast-alpha-strip-safe.png && oxipng -o max -Z --fast --alpha -s --out vitejs-logo--oxi915-opt-max-zopfli-fast-alpha-strip-safe.png vitejs-logo.png
  Time (mean ± σ):      3.963 s ±  0.002 s    [User: 4.089 s, System: 0.035 s]
  Range (min … max):    3.961 s …  3.966 s    5 runs
Original size: 25663 bytes
Output size: 21272 bytes
Reduction: 17.11%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f vitejs-logo--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out vitejs-logo--oxi915-opt-max-zopfli.png vitejs-logo.png
  Time (mean ± σ):     10.502 s ±  0.420 s    [User: 81.680 s, System: 0.195 s]
  Range (min … max):   10.012 s … 10.936 s    5 runs
Original size: 25663 bytes
Output size: 21467 bytes
Reduction: 16.35%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f vitejs-logo--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out vitejs-logo--oxi915-opt-max-zopfli-strip-safe.png vitejs-logo.png
  Time (mean ± σ):     10.676 s ±  0.253 s    [User: 81.924 s, System: 0.190 s]
  Range (min … max):   10.460 s … 10.970 s    5 runs
Original size: 25663 bytes
Output size: 21272 bytes
Reduction: 17.11%

TEST 6: oxipng v9.1.5, --opt max --zopfli --alpha
rm -f vitejs-logo--oxi915-opt-max-zopfli-alpha.png && oxipng -o max -Z --alpha --out vitejs-logo--oxi915-opt-max-zopfli-alpha.png vitejs-logo.png
  Time (mean ± σ):     10.291 s ±  0.137 s    [User: 81.022 s, System: 0.219 s]
  Range (min … max):   10.069 s … 10.400 s    5 runs
Original size: 25663 bytes
Output size: 20347 bytes
Reduction: 20.70%

TEST 6: oxipng v9.1.5, --opt max --zopfli --alpha --strip safe
rm -f vitejs-logo--oxi915-opt-max-zopfli-alpha-strip-safe.png && oxipng -o max -Z --alpha -s --out vitejs-logo--oxi915-opt-max-zopfli-alpha-strip-safe.png vitejs-logo.png
  Time (mean ± σ):     10.422 s ±  0.129 s    [User: 80.748 s, System: 0.215 s]
  Range (min … max):   10.312 s … 10.646 s    5 runs
Original size: 25663 bytes
Output size: 20152 bytes
Reduction: 21.46%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f vitejs-logo--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o vitejs-logo--cwebp150-lossless-exact-metadata-all.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
Original size: 25663 bytes
Output size: 19324 bytes
Reduction: 24.70%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f vitejs-logo--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o vitejs-logo--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 25663 bytes
Output size: 16868 bytes
Reduction: 34.27%



wsl-logo.png
--------------------------------------------------------------------------------

-   Filename: wsl-logo.png
-   Original size: 19038 bytes
-   Dimensions: 256 × 256 pixels
-   Number of colors: 1623

TEST 1: optipng v0.7.8, default
rm -f wsl-logo--opti078-default.png && optipng --out wsl-logo--opti078-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
Original size: 19038 bytes
Output size: 19038 bytes (sic)
Reduction: 0.00%

TEST 1: optipng v0.7.8, -strip all
rm -f wsl-logo--opti078-strip-all.png && optipng -strip all --out wsl-logo--opti078-strip-all.png wsl-logo.png
  Time (mean ± σ):     119.4 ms ±   0.6 ms    [User: 118.4 ms, System: 0.8 ms]
  Range (min … max):   118.7 ms … 120.3 ms    5 runs
Original size: 19038 bytes
Output size: 19038 bytes (sic)
Reduction: 0.00%

TEST 2: optipng v0.7.8, -o 7
rm -f wsl-logo--opti078-o-7.png && optipng -o 7 --out wsl-logo--opti078-o-7.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
Original size: 19038 bytes
Output size: 19038 bytes (sic)
Reduction: 0.00%

TEST 2: optipng v0.7.8, -o 7 -strip all
rm -f wsl-logo--opti078-o-7-strip-all.png && optipng -o 7 -strip all --out wsl-logo--opti078-o-7-strip-all.png wsl-logo.png
  Time (mean ± σ):      1.935 s ±  0.002 s    [User: 1.928 s, System: 0.007 s]
  Range (min … max):    1.932 s …  1.938 s    5 runs
Original size: 19038 bytes
Output size: 19038 bytes (sic)
Reduction: 0.00%

TEST 3: oxipng v9.1.5, default
rm -f wsl-logo--oxi915-default.png && oxipng --out wsl-logo--oxi915-default.png wsl-logo.png
  Time (mean ± σ):      72.3 ms ±   0.7 ms    [User: 77.4 ms, System: 7.4 ms]
  Range (min … max):    71.7 ms …  73.4 ms    5 runs
Original size: 19038 bytes
Output size: 17906 bytes
Reduction: 5.95%

TEST 3: oxipng v9.1.5, --strip safe
rm -f wsl-logo--oxi915-strip-safe.png && oxipng -s --out wsl-logo--oxi915-strip-safe.png wsl-logo.png
  Time (mean ± σ):      72.1 ms ±   0.4 ms    [User: 75.5 ms, System: 8.8 ms]
  Range (min … max):    71.6 ms …  72.5 ms    5 runs
Original size: 19038 bytes
Output size: 17906 bytes
Reduction: 5.95%

TEST 3: oxipng v9.1.5, --alpha
rm -f wsl-logo--oxi915-alpha.png && oxipng --alpha --out wsl-logo--oxi915-alpha.png wsl-logo.png
  Time (mean ± σ):      72.9 ms ±   0.5 ms    [User: 80.0 ms, System: 6.7 ms]
  Range (min … max):    72.3 ms …  73.6 ms    5 runs
Original size: 19038 bytes
Output size: 17422 bytes
Reduction: 8.49%

TEST 3: oxipng v9.1.5, --strip safe --alpha
rm -f wsl-logo--oxi915-alpha-strip-safe.png && oxipng --alpha -s --out wsl-logo--oxi915-alpha-strip-safe.png wsl-logo.png
  Time (mean ± σ):      73.0 ms ±   0.6 ms    [User: 82.2 ms, System: 4.8 ms]
  Range (min … max):    71.9 ms …  73.6 ms    5 runs
Original size: 19038 bytes
Output size: 17422 bytes
Reduction: 8.49%

TEST 4: oxipng v9.1.5, --opt max
rm -f wsl-logo--oxi915-opt-max.png && oxipng -o max --out wsl-logo--oxi915-opt-max.png wsl-logo.png
  Time (mean ± σ):     155.4 ms ±   5.8 ms    [User: 1217.0 ms, System: 13.0 ms]
  Range (min … max):   146.8 ms … 162.4 ms    5 runs
Original size: 19038 bytes
Output size: 17018 bytes
Reduction: 10.61%

TEST 4: oxipng v9.1.5, --opt max --strip safe
rm -f wsl-logo--oxi915-opt-max-strip-safe.png && oxipng -o max -s --out wsl-logo--oxi915-opt-max-strip-safe.png wsl-logo.png
  Time (mean ± σ):     157.6 ms ±   3.8 ms    [User: 1214.0 ms, System: 17.9 ms]
  Range (min … max):   154.2 ms … 164.0 ms    5 runs
Original size: 19038 bytes
Output size: 17018 bytes
Reduction: 10.61%

TEST 4: oxipng v9.1.5, --opt max --alpha
rm -f wsl-logo--oxi915-opt-max-alpha.png && oxipng -o max --alpha --out wsl-logo--oxi915-opt-max-alpha.png wsl-logo.png
  Time (mean ± σ):     164.2 ms ±   3.4 ms    [User: 1267.2 ms, System: 14.0 ms]
  Range (min … max):   159.3 ms … 167.6 ms    5 runs
Original size: 19038 bytes
Output size: 16938 bytes
Reduction: 11.03%

TEST 4: optipng v9.1.5, --opt max --strip safe --alpha
rm -f wsl-logo--oxi915-opt-max-alpha-strip-safe.png && oxipng -o max --alpha -s --out wsl-logo--oxi915-opt-max-alpha-strip-safe.png wsl-logo.png
  Time (mean ± σ):     159.2 ms ±   2.5 ms    [User: 1274.8 ms, System: 10.8 ms]
  Range (min … max):   156.4 ms … 162.7 ms    5 runs
Original size: 19038 bytes
Output size: 16938 bytes
Reduction: 11.03%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast
rm -f wsl-logo--oxi915-opt-max-zopfli-fast.png && oxipng -o max -Z --fast --out wsl-logo--oxi915-opt-max-zopfli-fast.png wsl-logo.png
  Time (mean ± σ):      2.280 s ±  0.016 s    [User: 2.350 s, System: 0.011 s]
  Range (min … max):    2.256 s …  2.297 s    5 runs
Original size: 19038 bytes
Output size: 16655 bytes
Reduction: 12.52%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --strip safe
rm -f wsl-logo--oxi915-opt-max-zopfli-fast-strip-safe.png && oxipng -o max -Z --fast -s --out wsl-logo--oxi915-opt-max-zopfli-fast-strip-safe.png wsl-logo.png
  Time (mean ± σ):      2.268 s ±  0.004 s    [User: 2.334 s, System: 0.017 s]
  Range (min … max):    2.261 s …  2.271 s    5 runs
Original size: 19038 bytes
Output size: 16655 bytes
Reduction: 12.52%

TEST 5 WITH --alpha
rm -f wsl-logo--oxi915-opt-max-zopfli-fast-alpha.png && oxipng -o max -Z --fast --alpha --out wsl-logo--oxi915-opt-max-zopfli-fast-alpha.png wsl-logo.png
  Time (mean ± σ):      2.109 s ±  0.005 s    [User: 2.190 s, System: 0.007 s]
  Range (min … max):    2.102 s …  2.115 s    5 runs
Original size: 19038 bytes
Output size: 16535 bytes
Reduction: 13.15%

TEST 5: oxipng v9.1.5, --opt max --zopfli --fast --alpha --strip safe
rm -f wsl-logo--oxi915-opt-max-zopfli-fast-alpha-strip-safe.png && oxipng -o max -Z --fast --alpha -s --out wsl-logo--oxi915-opt-max-zopfli-fast-alpha-strip-safe.png wsl-logo.png
  Time (mean ± σ):      2.114 s ±  0.010 s    [User: 2.193 s, System: 0.009 s]
  Range (min … max):    2.103 s …  2.128 s    5 runs
Original size: 19038 bytes
Output size: 16535 bytes
Reduction: 13.15%

TEST 6: oxipng v9.1.5, --opt max --zopfli
rm -f wsl-logo--oxi915-opt-max-zopfli.png && oxipng -o max -Z --out wsl-logo--oxi915-opt-max-zopfli.png wsl-logo.png
  Time (mean ± σ):      3.108 s ±  0.145 s    [User: 24.899 s, System: 0.064 s]
  Range (min … max):    2.944 s …  3.231 s    5 runs
Original size: 19038 bytes
Output size: 16655 bytes
Reduction: 12.52%

TEST 6: oxipng v9.1.5, --opt max --zopfli --strip safe
rm -f wsl-logo--oxi915-opt-max-zopfli-strip-safe.png && oxipng -o max -Z -s --out wsl-logo--oxi915-opt-max-zopfli-strip-safe.png wsl-logo.png
  Time (mean ± σ):      3.175 s ±  0.105 s    [User: 24.777 s, System: 0.078 s]
  Range (min … max):    2.997 s …  3.246 s    5 runs
Original size: 19038 bytes
Output size: 16655 bytes
Reduction: 12.52%

TEST 6: oxipng v9.1.5, --opt max --zopfli --alpha
rm -f wsl-logo--oxi915-opt-max-zopfli-alpha.png && oxipng -o max -Z --alpha --out wsl-logo--oxi915-opt-max-zopfli-alpha.png wsl-logo.png
  Time (mean ± σ):      3.067 s ±  0.086 s    [User: 24.303 s, System: 0.068 s]
  Range (min … max):    2.935 s …  3.162 s    5 runs
Original size: 19038 bytes
Output size: 16535 bytes
Reduction: 13.15%

TEST 6: oxipng v9.1.5, --opt max --zopfli --alpha --strip safe
rm -f wsl-logo--oxi915-opt-max-zopfli-alpha-strip-safe.png && oxipng -o max -Z --alpha -s --out wsl-logo--oxi915-opt-max-zopfli-alpha-strip-safe.png wsl-logo.png
  Time (mean ± σ):      3.066 s ±  0.041 s    [User: 24.502 s, System: 0.076 s]
  Range (min … max):    3.035 s …  3.133 s    5 runs
Original size: 19038 bytes
Output size: 16535 bytes
Reduction: 13.15%

TEST 7: cwebp v1.5.0, -metadata all -lossless -exact
rm -f wsl-logo--cwebp150-lossless-exact-metadata-all.webp && cwebp -lossless -exact -metadata all -o wsl-logo--cwebp150-lossless-exact-metadata-all.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
Original size: 19038 bytes
Output size: 12980 bytes
Reduction: 31.82%

TEST 8: cwebp v1.5.0, -lossless -z 9 -exact -metadata all
rm -f wsl-logo--cwebp150-lossless-z-9-exact-metadata-all.webp && cwebp -lossless -z 9 -exact -metadata all -o wsl-logo--cwebp150-lossless-z-9-exact-metadata-all.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
Original size: 19038 bytes
Output size: 12544 bytes
Reduction: 34.11%