1PNGCHECK(1)                      User Commands                     PNGCHECK(1)
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NAME

6       pngcheck - manual page for pngcheck 3.0.3
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SYNOPSIS

9       pngcheck [-7cpqtv] file.{png|jng|mng} [file2.{png|jng|mng} [...]]
10       ... | pngcheck [-7cpqstvx]
11       pngcheck [-7cpqstvx] file-containing-PNGs...
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DESCRIPTION

14       PNGcheck, version 3.0.3 of 25 April 2021, by Alexander Lehmann, Andreas
15       Dilger and Greg Roelofs.
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17       Test PNG, JNG or MNG image files for corruption,  and  print  size/type
18       info.
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OPTIONS

21       -7     print  contents  of  tEXt  chunks, escape chars >=128 (for 7-bit
22              terminals)
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24       -c     colorize output (for ANSI terminals)
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26       -p     print contents of PLTE, tRNS, hIST, sPLT and PPLT (can  be  used
27              with -q)
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29       -q     test quietly (output only errors)
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31       -s     search for PNGs within another file
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33       -t     print contents of tEXt chunks (can be used with -q)
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35       -v     test verbosely (print most chunk data)
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37       -vv    test very verbosely (decode & print line filters)
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39       -w     suppress windowBits test (more-stringent compression check)
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41       -x     search for PNGs within another file and extract them when found
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NOTE

44       MNG support is more informational than conformance-oriented.
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SEE ALSO

47       pngsplit(1), png-fix-IDAT-windowsize(1)
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51pngcheck 3.0.3                    April 2021                       PNGCHECK(1)