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

file insize instate stats outsize outstate savings
autumn.png 118543 bytes /c3 /f0 /d4 /n18
Kernel  Time =     0.015 =    4%
User    Time =     1.703 =  469%
Process Time =     1.718 =  474%    Virtual  Memory =     61 MB
Global  Time =     0.362 =  100%    Physical Memory =     41 MB
94804 bytes /c3 /f0 /d4 /n7 23739 bytes
cucumber.png 316012 bytes /c3 /f0 /d4 /n41
Kernel  Time =     0.031 =    3%
User    Time =     4.031 =  459%
Process Time =     4.062 =  462%    Virtual  Memory =     71 MB
Global  Time =     0.878 =  100%    Physical Memory =     64 MB
246704 bytes /c3 /f0 /d4 /n9 69308 bytes
dragon.png 78987 bytes /c3 /f0 /d4 /n13
Kernel  Time =     0.062 =   29%
User    Time =     0.984 =  458%
Process Time =     1.046 =  487%    Virtual  Memory =     57 MB
Global  Time =     0.214 =  100%    Physical Memory =     31 MB
67148 bytes /c3 /f0 /d4 /n6 11839 bytes
grass.png 78678 bytes /c3 /f0 /d4 /n41
Kernel  Time =     0.031 =    4%
User    Time =     3.296 =  489%
Process Time =     3.328 =  494%    Virtual  Memory =     64 MB
Global  Time =     0.673 =  100%    Physical Memory =     56 MB
53345 bytes /c3 /f0 /d4 /n5 25333 bytes
hurricane.png 24393 bytes /c3 /f0 /d4 /n6
Kernel  Time =     0.015 =   12%
User    Time =     0.562 =  456%
Process Time =     0.578 =  469%    Virtual  Memory =     55 MB
Global  Time =     0.123 =  100%    Physical Memory =     32 MB
20280 bytes /c3 /f0 /d4 /n2 4113 bytes
palm_tree.png 84251 bytes /c3 /f0 /d4 /n14
Kernel  Time =     0.062 =   18%
User    Time =     1.671 =  493%
Process Time =     1.734 =  512%    Virtual  Memory =     60 MB
Global  Time =     0.338 =  100%    Physical Memory =     47 MB
73380 bytes /c3 /f0 /d4 /n5 10871 bytes
pine_cone.png 122144 bytes /c3 /f0 /d4 /n34
Kernel  Time =     0.000 =    0%
User    Time =     2.406 =  477%
Process Time =     2.406 =  477%    Virtual  Memory =     63 MB
Global  Time =     0.504 =  100%    Physical Memory =     54 MB
94898 bytes /c3 /f0 /d4 /n6 27246 bytes
tomato.png 45011 bytes /c3 /f0 /d4 /n19
Kernel  Time =     0.000 =    0%
User    Time =     1.125 =  504%
Process Time =     1.125 =  504%    Virtual  Memory =     57 MB
Global  Time =     0.223 =  100%    Physical Memory =     38 MB
33746 bytes /c3 /f0 /d4 /n6 11265 bytes
tree.png 29796 bytes /c3 /f0 /d4 /n11
Kernel  Time =     0.000 =    0%
User    Time =     0.484 =  481%
Process Time =     0.484 =  481%    Virtual  Memory =     55 MB
Global  Time =     0.100 =  100%    Physical Memory =     21 MB
24162 bytes /c3 /f0 /d4 /n5 5634 bytes
winter.png 42249 bytes /c3 /f0 /d4 /n18
Kernel  Time =     0.031 =    9%
User    Time =     1.515 =  468%
Process Time =     1.546 =  478%    Virtual  Memory =     59 MB
Global  Time =     0.323 =  100%    Physical Memory =     32 MB
33590 bytes /c3 /f0 /d4 /n6 8659 bytes
total savings 198007 bytes
total time 3,74 seconds