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LEARN ABOUT DEBIAN

pngchunks

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 -0300					      PNGCHUNKS(1)