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AdvanceCOMP PNG Compression Utility.

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AdvanceCOMP PNG Compression Utility(1General Commands ManuaAdvanceCOMP PNG Compression 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 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.
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 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. -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 7z compressor. 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 compressors 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.
SEE ALSO advzip(1), advmng(1), advdef(1)
AdvanceCOMP PNG Compression Utility(1)
This manual Reference Other manuals
advpng(1) referred by advdef(1) | advmng(1) | advzip(1)
refer to advdef(1) | advmng(1) | advzip(1)