png optimize suite(Win32) (Ver 2012-06-15)

Download pngopt-120615.7z

Changes since Ver 2012-03-16:
^ update optipng to 0.7.1-icc-sse

png optimize suite(Win32) (Ver 2012-03-16)

Download pngopt-120316.7z

Changes since Ver 2011-04-11:
^ update optipng to 0.7-icc-sse
^ update pngout to 07/02/2011

png optimize suite(Win32) (Ver 2011-04-11)

Download pngopt-110411.7z

Changes since Ver 2009-05-29:
+ Add xargs.exe for parallel processing
+ Add pngoptall_nproc.bat and pngoptone.bat for parallel processing
! pngoptall.bat uses programs that sit with it
^ update optipng to 0.6.5-icc-sse

Usage:
pngoptall.bat [/r] : Original (Single process) version for all PNG in current directory (and subdirectories)
pngoptall_nproc.bat [/r] [/b] : Parallel version for all PNG in current directory (and subdirectories)
pngoptone.bat [/b] {file} : for One file. Will be called by pngoptall_nproc.bat

Switches: (must be in order, reversed order is not allowed)
/r: Recursive to further directories
/b: Start processes in "Below-Normal" priority

UnxUtils xargs (mod) binary/source (GPLv2)
My Enhanced UnxUtils xargs

png optimize suite(Win32) (Ver 2009-05-29)

Download pngopt-090529.7z

+ Add binmay.exe for APNG detection (deflopt and pngout will erase fdAT chunk)
! pngoptall.bat will rename APNG files to ".apng" file extension
! pngoptall.bat will end that round of optimization when encountering errorous png file
^ update optipng too 0.6.3-icc-sse

binmay-0.3 (mod) source (GPLv2)
binmay-0.3-src.7z