OptiPNG — optipng.exe -o2

file insize instate stats outsize outstate savings
blue.png 2378 bytes /c2 /f5 /n1
Kernel  Time =     0.031 =   22%
User    Time =     0.109 =   77%
Process Time =     0.140 =  100%    Virtual  Memory =      4 MB
Global  Time =     0.140 =  100%    Physical Memory =      7 MB
2085 bytes /c3 /f5 /d8 /n1 293 bytes
gray.png 7582 bytes /c3 /f0 /d8 /n1
Kernel  Time =     0.000 =    0%
User    Time =     0.093 =  106%
Process Time =     0.093 =  106%    Virtual  Memory =      3 MB
Global  Time =     0.087 =  100%    Physical Memory =      6 MB
1239 bytes /c0 /f5 /d8 /n1 6343 bytes
green.png 7582 bytes /c3 /f0 /d8 /n1
Kernel  Time =     0.000 =    0%
User    Time =     0.078 =   87%
Process Time =     0.078 =   87%    Virtual  Memory =      3 MB
Global  Time =     0.088 =  100%    Physical Memory =      6 MB
2019 bytes /c3 /f5 /d8 /n1 5563 bytes
multi.png 629573 bytes /c2 /f0 /n257
Kernel  Time =     0.015 =    3%
User    Time =     0.484 =   93%
Process Time =     0.500 =   96%    Virtual  Memory =      5 MB
Global  Time =     0.515 =  100%    Physical Memory =      8 MB
5192 bytes /c2 /f5 /n1 624381 bytes
multi-alpha.png 796228 bytes /c6 /f0 /n257
Kernel  Time =     0.000 =    0%
User    Time =     1.578 =   99%
Process Time =     1.578 =   99%    Virtual  Memory =      6 MB
Global  Time =     1.587 =  100%    Physical Memory =     10 MB
58766 bytes /c6 /f5 /n3 737462 bytes
multi-avg.png 96663 bytes /c2 /f4 /n257
Kernel  Time =     0.015 =    4%
User    Time =     0.328 =   95%
Process Time =     0.343 =  100%    Virtual  Memory =      5 MB
Global  Time =     0.341 =  100%    Physical Memory =      8 MB
15094 bytes /c2 /f5 /n1 81569 bytes
multi-cq.png 92377 bytes /c2 /f4 /n3
Kernel  Time =     0.000 =    0%
User    Time =     0.968 =  100%
Process Time =     0.968 =  100%    Virtual  Memory =      5 MB
Global  Time =     0.968 =  100%    Physical Memory =      8 MB
70897 bytes /c2 /f5 /n3 21480 bytes
purple.png 1575999 bytes /c2 /f0 /n0
Kernel  Time =     0.031 =   28%
User    Time =     0.078 =   71%
Process Time =     0.109 =  100%    Virtual  Memory =      4 MB
Global  Time =     0.109 =  100%    Physical Memory =      7 MB
2019 bytes /c3 /f5 /d8 /n1 1573980 bytes
purple-noise.png 1575999 bytes /c2 /f0 /n0
Kernel  Time =     0.015 =    0%
User    Time =     9.031 =   99%
Process Time =     9.046 =   99%    Virtual  Memory =      4 MB
Global  Time =     9.092 =  100%    Physical Memory =      7 MB
345437 bytes /c2 /f5 /n97 1230562 bytes
red-alpha.png 3306 bytes /c6 /f4 /n1
Kernel  Time =     0.015 =   14%
User    Time =     0.093 =   88%
Process Time =     0.109 =  103%    Virtual  Memory =      4 MB
Global  Time =     0.105 =  100%    Physical Memory =      7 MB
2286 bytes /c3 /f5 /d8 /n1 1020 bytes
total savings 4282653 bytes
total time 13,03 seconds