oxipng — oxipng.exe -o 6 --libdeflater --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 =     0.421 =  376%
Process Time =     0.421 =  376%    Virtual  Memory =     55 MB
Global  Time =     0.112 =  100%    Physical Memory =     20 MB
41970 bytes /c3 /f0 /d4 /n5 12866 bytes
carrot.png 61197 bytes /c3 /f0 /d8 /n17
Kernel  Time =     0.015 =    4%
User    Time =     1.546 =  420%
Process Time =     1.562 =  424%    Virtual  Memory =     58 MB
Global  Time =     0.367 =  100%    Physical Memory =     33 MB
36857 bytes /c3 /f0 /d4 /n6 24340 bytes
chart.png 63110 bytes /c3 /f0 /d8 /n29
Kernel  Time =     0.062 =    8%
User    Time =     3.140 =  405%
Process Time =     3.203 =  413%    Virtual  Memory =     64 MB
Global  Time =     0.773 =  100%    Physical Memory =     48 MB
29003 bytes /c3 /f2 /d4 /n7 34107 bytes
colors.png 5713 bytes /c3 /f0 /d8 /n4
Kernel  Time =     0.015 =   14%
User    Time =     0.375 =  341%
Process Time =     0.390 =  356%    Virtual  Memory =     56 MB
Global  Time =     0.109 =  100%    Physical Memory =     21 MB
1264 bytes /c3 /f0 /d4 /n1 4449 bytes
salad.png 244577 bytes /c3 /f0 /d8 /n19
Kernel  Time =     0.015 =    2%
User    Time =     2.078 =  373%
Process Time =     2.093 =  376%    Virtual  Memory =     63 MB
Global  Time =     0.556 =  100%    Physical Memory =     55 MB
157808 bytes /c3 /f0 /d4 /n3 86769 bytes
screen.png 9707 bytes /c3 /f0 /d8 /n32
Kernel  Time =     0.015 =    8%
User    Time =     0.578 =  304%
Process Time =     0.593 =  312%    Virtual  Memory =     57 MB
Global  Time =     0.189 =  100%    Physical Memory =     23 MB
6067 bytes /c3 /f0 /d4 /n3 3640 bytes
total savings 166171 bytes
total time 2,11 seconds