NAME¶
pngchunks - print information embedded into a PNG 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
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).
