DOKK / manpages / debian 11 / pngcheck / png-fix-IDAT-windowsize.1.en
PNG-FIX-IDAT-WINDOWSIZE(1) User Commands PNG-FIX-IDAT-WINDOWSIZE(1)

png-fix-IDAT-windowsize - utility to reset first IDAT's zlib window-size bytes and fix up CRC to match.

png-fix-IDAT-windowsize [options] pngfile [pngfile ...]

png-fix-IDAT-windowsize, version 1.0 of 31 October 2020, by Greg Roelofs.

Uses explicit, hardcoded compression settings and line filters, writing result to output file with extension "-fixed.png".

This software is licensed under the GNU General Public License. There is NO warranty.

overwrite existing output files
print more status messages (synonym: -noquiet)

pngcheck(1), pngsplit(1)

October 2020 png-fix-IDAT-windowsize 1.0