AdvanceCOM...ion Utility(1) General Commands Manual AdvanceCOM...ion Utility(1) NAME advpng - AdvanceCOMP PNG Compression Utility SYNOPSIS advpng [-l, --list] [-z, --recompress] [-0, --shrink-0] [-1, --shrink-fast] [-2, --shrink-normal [-3, --shrink-extra] [-4, --shrink-insane] [-i, --iter N] [-f, --force] [-q, --quiet] [-h, --help] [-V, --version] FILES... 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 emu- lator. To compress the files this utility uses the following strategies: * Remove all ancillary chunks. * Concatenate all the IDAT chunks. * Use the 7zip Deflate implementation. OPTIONS -l, --list FILES... List the content of the specified files. -z, --recompress FILES... Recompress the specified files. If the -1, -2, -3 options are speci- fied 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. -0, --shrink-store Disable the compression. The file is only stored and not compressed. The file is always rewritten also if it's bigger. -1, --shrink-fast Set the compression level to "fast" using the zlib compressor. -2, --shrink-normal Set the compression level to "normal" using the libdeflate compres- sor. This is the default level of compression. -3, --shrink-extra Set the compression level to "extra" using the 7z compressor. You can define the compressor iterations with the -i, --iter option. -4, --shrink-insane Set the compression level to "insane" using the zopfli compressor. You can define the compressor iterations with the -i, --iter option. -i, --iter N Define an additional numer of iterations for the 7z and zopfli com- pressors for modes -3 and -4. More iterations usually give a better compression, but may require a lot more time. Try for example with 10, 15, 20, and so on. -f, --force Force the use of the new file also if it's bigger. COPYRIGHT This file is Copyright (C) 2002 Andrea Mazzoleni, Filipe Estima SEE ALSO advzip(1), advmng(1), advdef(1) AdvanceCOM...ion Utility(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | COPYRIGHT | SEE ALSO
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