PNGCHECK(1) pngcheck 3.0.3 PNGCHECK(1)
User Commands User Commands
April 2021
NAME
pngcheck - manual page for pngcheck 3.0.3
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.
SEE ALSO
pngsplit(1), png-fix-IDAT-windowsize(1)
- 1 - Formatted: April 24, 2024
