oxipng — oxipng.exe -o 6 --libdeflater --alpha --strip all

file insize instate stats outsize outstate savings
sprite1.png 214138 bytes /c6 /f0 /n82
Kernel  Time =     0.312 =   19%
User    Time =     6.781 =  423%
Process Time =     7.093 =  442%    Virtual  Memory =     72 MB
Global  Time =     1.601 =  100%    Physical Memory =     55 MB
103514 bytes /c6 /f0 /n16 110624 bytes
sprite2.png 81959 bytes /c6 /f0 /n27
Kernel  Time =     0.015 =    4%
User    Time =     2.093 =  537%
Process Time =     2.109 =  541%    Virtual  Memory =     60 MB
Global  Time =     0.389 =  100%    Physical Memory =     34 MB
40392 bytes /c6 /f0 /n5 41567 bytes
sprite3.png 481998 bytes /c6 /f0 /n118
Kernel  Time =     0.734 =   30%
User    Time =     8.687 =  360%
Process Time =     9.421 =  391%    Virtual  Memory =     93 MB
Global  Time =     2.408 =  100%    Physical Memory =     76 MB
251354 bytes /c6 /f0 /n15 230644 bytes
sprite4.png 76877 bytes /c6 /f0 /n76
Kernel  Time =     0.015 =   11%
User    Time =     0.578 =  423%
Process Time =     0.593 =  435%    Virtual  Memory =     56 MB
Global  Time =     0.136 =  100%    Physical Memory =     15 MB
26148 bytes /c3 /f0 /d8 /n9 50729 bytes
sprite5.png 49557 bytes /c6 /f0 /n23
Kernel  Time =     0.000 =    0%
User    Time =     0.453 =  432%
Process Time =     0.453 =  432%    Virtual  Memory =     56 MB
Global  Time =     0.104 =  100%    Physical Memory =     18 MB
24679 bytes /c3 /f0 /d8 /n7 24878 bytes
sprite6.png 31212 bytes /c6 /f0 /n15
Kernel  Time =     0.000 =    0%
User    Time =     0.281 =  401%
Process Time =     0.281 =  401%    Virtual  Memory =     55 MB
Global  Time =     0.070 =  100%    Physical Memory =     18 MB
14857 bytes /c3 /f0 /d8 /n2 16355 bytes
sprite7.png 59637 bytes /c6 /f0 /n17
Kernel  Time =     0.000 =    0%
User    Time =     1.671 =  522%
Process Time =     1.671 =  522%    Virtual  Memory =     59 MB
Global  Time =     0.320 =  100%    Physical Memory =     29 MB
36297 bytes /c6 /f0 /n5 23340 bytes
sprite8.png 469897 bytes /c6 /f0 /n88
Kernel  Time =     0.218 =   27%
User    Time =     3.562 =  439%
Process Time =     3.781 =  466%    Virtual  Memory =     73 MB
Global  Time =     0.810 =  100%    Physical Memory =     48 MB
393076 bytes /c6 /f5 /n12 76821 bytes
sprite9.png 204177 bytes /c6 /f0 /n42
Kernel  Time =     0.015 =   12%
User    Time =     0.453 =  362%
Process Time =     0.468 =  375%    Virtual  Memory =     58 MB
Global  Time =     0.124 =  100%    Physical Memory =     32 MB
85746 bytes /c3 /f0 /d8 /n11 118431 bytes
spritea.png 163705 bytes /c6 /f0 /n112
Kernel  Time =     0.015 =    3%
User    Time =     1.953 =  465%
Process Time =     1.968 =  468%    Virtual  Memory =     64 MB
Global  Time =     0.419 =  100%    Physical Memory =     40 MB
61385 bytes /c3 /f0 /d8 /n11 102320 bytes
spriteb.png 791918 bytes /c6 /f0 /n3
Kernel  Time =     0.031 =    7%
User    Time =     2.218 =  514%
Process Time =     2.250 =  522%    Virtual  Memory =     70 MB
Global  Time =     0.430 =  100%    Physical Memory =     37 MB
416727 bytes /c6 /f0 /n35 375191 bytes
spritec.png 326840 bytes /c2 /f4 /n5
Kernel  Time =     0.015 =   12%
User    Time =     0.468 =  387%
Process Time =     0.484 =  400%    Virtual  Memory =     59 MB
Global  Time =     0.121 =  100%    Physical Memory =     29 MB
117824 bytes /c3 /f0 /d8 /n11 209016 bytes
total savings 1379916 bytes
total time 6,93 seconds