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29 lines
585 B
Bash
Executable File
29 lines
585 B
Bash
Executable File
#!/bin/sh
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# try-pngzop
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# usage: try-pngzop dir ...
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# runs pngzop on each PNG file in a set of directories
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# For use in the pngzop project
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# Copyright 2013 by Glenn Randers-Pehrson
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# Released under the pngcrush license (equivalent to the libpng license)
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# From a PNG file, finds the smallest resulting compressed IDAT
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# data from zopfli compression of filter types 0 through 4 and
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# "adaptive" (f5) filtering.
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for dir in $*
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do
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(
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cd $dir
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for n in *.png
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do
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pngzop $n > $n.zop
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pngcrush -brute -force $n $n.bf.png
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pngzdat $n.bf.png
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done
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)
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done
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