optipng-morphos 7.9.1

Advanced PNG optimizer

Short:        Advanced PNG optimizer
Author:       Cosmin Truta and the Contributing Authors
Uploader:     polluks+aminet sdf org (Stefan Haubenthal)
Type:         gfx/misc
Version:      7.9.1
Architecture: ppc-morphos
URL:          http://optipng.sourceforge.net

Synopsis:
    optipng [options] files ...
Files:
    Image files of type: PNG, BMP, GIF, PNM or TIFF
Basic options:
    -?, -h, -help	show this help
    -o <level>		optimization level (0-7)		[default: 2]
    -v			run in verbose mode / show copyright and version info
General options:
    -backup, -keep	keep a backup of the modified files
    -clobber		overwrite existing files
    -fix		enable error recovery
    -force		enforce writing of a new output file
    -preserve		preserve file attributes if possible
    -quiet, -silent	run in quiet mode
    -simulate		run in simulation mode
    -out <file>		write output file to <file>
    -dir <directory>	write output file(s) to <directory>
    --			stop option switch parsing
Optimization options:
    -f <filters>	PNG delta filters (0-5)			[default: 0,5]
    -i <type>		PNG interlace type (0-1)
    -zc <levels>	zlib compression levels (1-9)		[default: 9]
    -zm <levels>	zlib memory levels (1-9)		[default: 8]
    -zs <strategies>	zlib compression strategies (0-3)	[default: 0-3]
    -zw <size>		zlib window size (256,512,1k,2k,4k,8k,16k,32k)
    -full		produce a full report on IDAT (might reduce speed)
    -nb			no bit depth reduction
    -nc			no color type reduction
    -np			no palette reduction
    -nx			no reductions
    -nz			no IDAT recoding
Editing options:
    -snip		cut one image out of multi-image or animation files
    -strip <objects>	strip metadata objects (e.g. "all")
Optimization levels:
    -o0		<=>	-o1 -nx -nz				(0 or 1 trials)
    -o1		<=>	-zc9 -zm8 -zs0 -f0			(1 trial)
    		(or...)	-zc9 -zm8 -zs1 -f5			(1 trial)
    -o2		<=>	-zc9 -zm8 -zs0-3 -f0,5			(8 trials)
    -o3		<=>	-zc9 -zm8-9 -zs0-3 -f0,5		(16 trials)
    -o4		<=>	-zc9 -zm8 -zs0-3 -f0-5			(24 trials)
    -o5		<=>	-zc9 -zm8-9 -zs0-3 -f0-5		(48 trials)
    -o6		<=>	-zc1-9 -zm8 -zs0-3 -f0-5		(120 trials)
    -o7		<=>	-zc1-9 -zm8-9 -zs0-3 -f0-5		(240 trials)
    -o7 -zm1-9	<=>	-zc1-9 -zm1-9 -zs0-3 -f0-5		(1080 trials)
Notes:
    The combination for -o1 is chosen heuristically.
    Exhaustive combinations such as "-o7 -zm1-9" are not generally recommended.
Examples:
    optipng file.png						(default speed)
    optipng -o5 file.png					(slow)
    optipng -o7 file.png					(very slow)