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===================================
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AdvanceCOMP PNG Compression Utility
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===================================
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advpng [-l, --list] [-z, --recompress] [-0, --shrink-0]
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[-1, --shrink-fast] [-2, --shrink-normal [-3, --shrink-extra]
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[-4, --shrink-insane] [-f, --force] [-q, --quiet]
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[-h, --help] [-V, --version] FILES...
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The main purpose of this utility is to recompress png
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files to get the smallest possible size.
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Please note that this utility is not able to read
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a generic file. It's granted to be able to read only
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the files generated by the AdvanceMAME emulator.
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To compress the files this utility uses the following
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* Remove all ancillary chunks.
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* Concatenate all the IDAT chunks.
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* Use the 7zip Deflate implementation.
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List the content of the specified files.
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-z, --recompress FILES...
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Recompress the specified files. If the -1, -2, -3
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options are specified it's used the smallest file
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choice from the previous compressed data and the
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new compression. If the -0 option is specified the
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file is always rewritten without any compression.
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Disable the compression. The file is
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only stored and not compressed. The file is always
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rewritten also if it's bigger.
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Set the compression level to "fast".
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Set the compression level to "normal". This is the
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default level of compression.
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Set the compression level to "extra".
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Set the compression level to "insane".
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Force the use of the new file also if it's bigger.
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This file is Copyright (C) 2002 Andrea Mazzoleni, Filipe Estima
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advzip(1), advmng(1), advdef(1)
added
removed
doc/advpng.txt
