PNGCP(1) General Commands Manual PNGCP(1)NAME
pngcp - create a new PNG file, having changed some attributes
SYNOPSIS
pngcp [-d <depth>] [-s <samples per pixel>] <input filename> <output filename>
DESCRIPTION
The pngcp create a new PNG file using the image data from the input file. The output file will have the bitdepth and number of samples per
pixel as specified on the command line. There are limits on what is a valid combination imposed by the PNG specification -- pngcp will
inform you of invalid combinations.
Samples with more than eight bits are not correctly handled at the moment.
RETURNS
Nothing.
EXAMPLE
pngcp toucan.png new.png
SEE ALSO pngchunkdesc(1), pngchunks(1), pnginfo(1).
AUTHOR
pngcp was written by Michael Still <mikal@stillhq.com>.
This manual page was written by Nelson A. de Oliveira <naoliv@debian.org>, for the Debian project (but may be used by others).
Tue, 31 Jul 2007 17:55:51 -0300PNGCP(1)
Check Out this Related Man Page
PNGCHUNKS(1) General Commands Manual PNGCHUNKS(1)NAME
pngchunks - print information embedded into a PNG file
SYNOPSIS
pngchunks file
DESCRIPTION
pngchunks is a program that displays informations from files created according to the Portable Network Graphics file format.
EXAMPLE
pngchunks input.png Chunk: Data Length 13 (max 2147483647), Type 1380206665 [IHDR]
Critical, public, PNG 1.2 compliant, unsafe to copy
IHDR Width: 256
IHDR Height: 256
IHDR Bitdepth: 8
IHDR Colortype: 2
IHDR Compression: 0
IHDR Filter: 0
IHDR Interlace: 0
IHDR Compression algorithm is Deflate
IHDR Filter method is type zero (None, Sub, Up, Average, Paeth)
IHDR Interlacing is disabled
Chunk CRC: -753909967 Chunk: Data Length 6 (max 2147483647), Type 1145523042 [bKGD]
Ancillary, public, PNG 1.2 compliant, unsafe to copy
... Unknown chunk type
Chunk CRC: 554438993 Chunk: Data Length 9 (max 2147483647), Type 1935231088 [pHYs]
Ancillary, public, PNG 1.2 compliant, safe to copy
... Unknown chunk type
Chunk CRC: -757235972 Chunk: Data Length 7 (max 2147483647), Type 1162692980 [tIME]
Ancillary, public, PNG 1.2 compliant, unsafe to copy
... Unknown chunk type
Chunk CRC: 429243611 Chunk: Data Length 831 (max 2147483647), Type 1413563465 [IDAT]
Critical, public, PNG 1.2 compliant, unsafe to copy
IDAT contains image data
Chunk CRC: 1406256926 Chunk: Data Length 0 (max 2147483647), Type 1145980233 [IEND]
Critical, public, PNG 1.2 compliant, unsafe to copy
IEND contains no data
Chunk CRC: -1371381630
SEE ALSO pngchunkdesc(1), pngcp(1), pnginfo(1).
AUTHOR
pngchunks was written by Michael Still <mikal@stillhq.com>.
This manual page was written by Nelson A. de Oliveira <naoliv@debian.org>, for the Debian project (but may be used by others).
Tue, 31 Jul 2007 17:55:51 -0300PNGCHUNKS(1)
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