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advpng - Online in the Cloud

Run advpng in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command advpng that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

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.

COPYRIGHT


This file is Copyright (C) 2002 Andrea Mazzoleni, Filipe Estima

Use advpng online using onworks.net services


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