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 =    5%
User    Time =     0.500 =  179%
Process Time =     0.515 =  184%    Virtual  Memory =     23 MB
Global  Time =     0.279 =  100%    Physical Memory =     20 MB
94804 bytes /c3 /f0 /d4 /n7 23739 bytes
cucumber.png 316012 bytes /c3 /f0 /d4 /n41
Kernel  Time =     0.015 =    2%
User    Time =     1.328 =  190%
Process Time =     1.343 =  192%    Virtual  Memory =     36 MB
Global  Time =     0.698 =  100%    Physical Memory =     38 MB
246704 bytes /c3 /f0 /d4 /n9 69308 bytes
dragon.png 78987 bytes /c3 /f0 /d4 /n13
Kernel  Time =     0.015 =    9%
User    Time =     0.296 =  176%
Process Time =     0.312 =  186%    Virtual  Memory =     22 MB
Global  Time =     0.167 =  100%    Physical Memory =     13 MB
67148 bytes /c3 /f0 /d4 /n6 11839 bytes
grass.png 78678 bytes /c3 /f0 /d4 /n41
Kernel  Time =     0.015 =    2%
User    Time =     0.875 =  167%
Process Time =     0.890 =  170%    Virtual  Memory =     25 MB
Global  Time =     0.522 =  100%    Physical Memory =     26 MB
53345 bytes /c3 /f0 /d4 /n5 25333 bytes
hurricane.png 24393 bytes /c3 /f0 /d4 /n6
Kernel  Time =     0.015 =   14%
User    Time =     0.187 =  175%
Process Time =     0.203 =  189%    Virtual  Memory =     20 MB
Global  Time =     0.107 =  100%    Physical Memory =     14 MB
20280 bytes /c3 /f0 /d4 /n2 4113 bytes
palm_tree.png 84251 bytes /c3 /f0 /d4 /n14
Kernel  Time =     0.000 =    0%
User    Time =     0.484 =  172%
Process Time =     0.484 =  172%    Virtual  Memory =     22 MB
Global  Time =     0.281 =  100%    Physical Memory =     19 MB
73380 bytes /c3 /f0 /d4 /n5 10871 bytes
pine_cone.png 122144 bytes /c3 /f0 /d4 /n34
Kernel  Time =     0.015 =    4%
User    Time =     0.703 =  187%
Process Time =     0.718 =  191%    Virtual  Memory =     24 MB
Global  Time =     0.374 =  100%    Physical Memory =     23 MB
94898 bytes /c3 /f0 /d4 /n6 27246 bytes
tomato.png 45011 bytes /c3 /f0 /d4 /n19
Kernel  Time =     0.015 =    9%
User    Time =     0.296 =  174%
Process Time =     0.312 =  183%    Virtual  Memory =     21 MB
Global  Time =     0.170 =  100%    Physical Memory =     16 MB
33746 bytes /c3 /f0 /d4 /n6 11265 bytes
tree.png 29796 bytes /c3 /f0 /d4 /n11
Kernel  Time =     0.015 =   19%
User    Time =     0.109 =  133%
Process Time =     0.125 =  152%    Virtual  Memory =     20 MB
Global  Time =     0.081 =  100%    Physical Memory =     10 MB
24162 bytes /c3 /f0 /d4 /n5 5634 bytes
winter.png 42249 bytes /c3 /f0 /d4 /n18
Kernel  Time =     0.015 =    5%
User    Time =     0.468 =  177%
Process Time =     0.484 =  183%    Virtual  Memory =     23 MB
Global  Time =     0.263 =  100%    Physical Memory =     16 MB
33590 bytes /c3 /f0 /d4 /n6 8659 bytes
total savings 198007 bytes
total time 2,94 seconds