NAME

       apngopt - optimize animated PNG image files

SYNOPSIS

       apngopt [options] anim.png [anim_opt.png]

DESCRIPTION

       After converting impage to APNG with e.g. gif2apng(1), the files size can further be
       reduced with this utility.

       The Animated Portable Network Graphics (APNG) file format is an extension to the Portable
       Network Graphics (PNG) specification. It allows for animated PNG files that work similarly
       to animated GIF files, while retaining backward compatibility with non-animated PNG files
       and adding support for 8-bit transparency and 24-bit images.

OPTIONS

       -z0  : zlib compression

       -z1  : 7zip compression (default)

       -z2  : zopfli compression

       -i## : number of iterations, default -i15

STANDARDS

       APNG Specification: https://wiki.mozilla.org/APNG_Specification

SEE ALSO

       apngopt(1) apng2gif(1) gif2apng(1) gifsicle(1) gifview(1) optipng(1) pngcheck(1)
       pngcrush(1) pnginfo(1) pngnq(1) pngquant(1)

AUTHORS

       Program was written by Max Stepi <maxst@users.sourceforge.net>

       This manual page was written by Jari Aalto <jari.aalto@cante.net>.  Released under license
       GNU GPL version 2 or (at your option) any later version. For more information about
       license, visit <http://www.gnu.org/copyleft/gpl.html>.