OptiPNG — optipng.exe -o7

file insize instate stats outsize outstate savings
lorem.png 135614 bytes /c2 /f0 /n63
Kernel  Time =     0.015 =    0%
User    Time =     8.656 =   99%
Process Time =     8.671 =   99%    Virtual  Memory =      4 MB
Global  Time =     8.737 =  100%    Physical Memory =      7 MB
110986 bytes /c2 /f0 /n3 24628 bytes
lorem_90.png 483089 bytes /c2 /f0 /n106
Kernel  Time =     0.062 =    0%
User    Time =    17.656 =   98%
Process Time =    17.718 =   99%    Virtual  Memory =      4 MB
Global  Time =    17.838 =  100%    Physical Memory =      7 MB
460261 bytes /c2 /f0 /n12 22828 bytes
lorem_big.png 127451 bytes /c2 /f0 /n3
Kernel  Time =     0.031 =    0%
User    Time =    12.187 =   99%
Process Time =    12.218 =   99%    Virtual  Memory =      5 MB
Global  Time =    12.273 =  100%    Physical Memory =      9 MB
72838 bytes /c0 /f0 /d8 /n2 54613 bytes
lorem_big_16.png 65084 bytes /c0 /f0 /d8 /n28
Kernel  Time =     0.015 =    0%
User    Time =     9.109 =   99%
Process Time =     9.125 =   99%    Virtual  Memory =      3 MB
Global  Time =     9.141 =  100%    Physical Memory =      7 MB
55103 bytes /c3 /f5 /d4 /n2 9981 bytes
lorem_big_17.png 65551 bytes /c0 /f0 /d8 /n35
Kernel  Time =     0.031 =    0%
User    Time =     9.093 =   98%
Process Time =     9.125 =   99%    Virtual  Memory =      3 MB
Global  Time =     9.203 =  100%    Physical Memory =      7 MB
49874 bytes /c0 /f0 /d8 /n1 15677 bytes
lorem_big_noise.png 823706 bytes /c2 /f0 /n82
Kernel  Time =     0.093 =    0%
User    Time =   273.546 =   99%
Process Time =   273.640 =   99%    Virtual  Memory =      5 MB
Global  Time =   274.652 =  100%    Physical Memory =      9 MB
656550 bytes /c2 /f0 /n22 167156 bytes
lorem_gray.png 140439 bytes /c2 /f0 /n123
Kernel  Time =     0.031 =    0%
User    Time =     5.109 =   98%
Process Time =     5.140 =   99%    Virtual  Memory =      4 MB
Global  Time =     5.191 =  100%    Physical Memory =      7 MB
60530 bytes /c0 /f0 /d8 /n1 79909 bytes
lorem_image.png 133069 bytes /c2 /f0 /n3
Kernel  Time =     0.062 =    0%
User    Time =    13.250 =   98%
Process Time =    13.312 =   99%    Virtual  Memory =      6 MB
Global  Time =    13.388 =  100%    Physical Memory =      9 MB
118496 bytes /c2 /f0 /n5 14573 bytes
lorem_noise.png 542244 bytes /c2 /f0 /n67
Kernel  Time =     0.062 =    0%
User    Time =   132.062 =   99%
Process Time =   132.125 =   99%    Virtual  Memory =      4 MB
Global  Time =   132.831 =  100%    Physical Memory =      7 MB
460345 bytes /c2 /f0 /n9 81899 bytes
lorem_pal.png 121950 bytes /c2 /f0 /n73
Kernel  Time =     0.046 =    0%
User    Time =     4.906 =   97%
Process Time =     4.953 =   98%    Virtual  Memory =      4 MB
Global  Time =     5.009 =  100%    Physical Memory =      7 MB
56209 bytes /c0 /f0 /d8 /n1 65741 bytes
total savings 537005 bytes
total time 488,26 seconds