Man page - pngcheck(1)

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Package: pngcheck
apt-get install pngcheck

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pngcheck

Manual

PNGCHECK

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
NOTE
SEE ALSO

NAME

pngcheck - tests PNG, JNG or MNG image files for corruption, and prints size/type info.

SYNOPSIS

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

DESCRIPTION

PNGcheck, version 3.0.3 of 25 April 2021, by Alexander Lehmann, Andreas Dilger and Greg Roelofs.

Test PNG, JNG or MNG image files for corruption, and print size/type info.

OPTIONS

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

NOTE

MNG support is more informational than conformance-oriented.