apngopt - optimize animated PNG image files

       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>.

apngopt                                            2024-04-01                                         apngopt(1)

       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.

       apngopt - optimize animated PNG image files

       -z0  : zlib compression

       -z1  : 7zip compression (default)

       -z2  : zopfli compression

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

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

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

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