oxipng — oxipng.exe -o 2 --libdeflater --threads 1 --alpha --strip all

file insize instate stats outsize outstate savings
brocolli.png 54836 bytes /c3 /f0 /d8 /n6
Kernel  Time =     0.000 =    0%
User    Time =     0.171 =  120%
Process Time =     0.171 =  120%    Virtual  Memory =     11 MB
Global  Time =     0.143 =  100%    Physical Memory =      8 MB
41970 bytes /c3 /f0 /d4 /n5 12866 bytes
carrot.png 61197 bytes /c3 /f0 /d8 /n17
Kernel  Time =     0.015 =    3%
User    Time =     0.515 =  105%
Process Time =     0.531 =  108%    Virtual  Memory =     13 MB
Global  Time =     0.489 =  100%    Physical Memory =     14 MB
36857 bytes /c3 /f0 /d4 /n6 24340 bytes
chart.png 63110 bytes /c3 /f0 /d8 /n29
Kernel  Time =     0.015 =    1%
User    Time =     1.031 =  111%
Process Time =     1.046 =  113%    Virtual  Memory =     19 MB
Global  Time =     0.923 =  100%    Physical Memory =     22 MB
29469 bytes /c3 /f5 /d4 /n7 33641 bytes
colors.png 5713 bytes /c3 /f0 /d8 /n4
Kernel  Time =     0.000 =    0%
User    Time =     0.140 =  101%
Process Time =     0.140 =  101%    Virtual  Memory =     11 MB
Global  Time =     0.138 =  100%    Physical Memory =      9 MB
1264 bytes /c3 /f0 /d4 /n1 4449 bytes
salad.png 244577 bytes /c3 /f0 /d8 /n19
Kernel  Time =     0.000 =    0%
User    Time =     0.843 =  112%
Process Time =     0.843 =  112%    Virtual  Memory =     15 MB
Global  Time =     0.751 =  100%    Physical Memory =     18 MB
157808 bytes /c3 /f0 /d4 /n3 86769 bytes
screen.png 9707 bytes /c3 /f0 /d8 /n32
Kernel  Time =     0.015 =    6%
User    Time =     0.250 =  111%
Process Time =     0.265 =  118%    Virtual  Memory =     12 MB
Global  Time =     0.224 =  100%    Physical Memory =     11 MB
6067 bytes /c3 /f0 /d4 /n3 3640 bytes
total savings 165705 bytes
total time 2,67 seconds