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