gif2png 0.6 (beta) compiled Dec 21 1995 with libpng-0.81 and zlib-0.95
usage: gif2png [ -dhi ] [file[.gif]] ...

       -d delete source GIF files after successful conversion
       -i create interlaced PNG files
       -h create histogram chunks for color files
       -p do not display progress of PNG writing in %
       -r try to recover corrupt GIF files
       -s do not write Software chunk
       -t ignore Plain Text Extensions

       if no source files are listed, stdin is converted to noname.png
       (may not work on systems that distinguish between text and binary mode)

       gif2png is Copyright 1995 by Alexander Lehmann <alex@hal.rhein-main.de>
       For copyright, license, credits, etc. see the file README, which you
       should have received along with this program. If you didn't, you may be
       able to find gif2png on ftp://ftp.uu.net/graphics/png or on my
       WWW-page http://www.student.informatik.th-darmstadt.de/~alexlehm/

The -d option doesn't really delete the orginal GIF file, but renames it
to something like .gi_, so that you can delete it using "delete #?.gi_",
if everything has been converted correctly. This behaviour is the same for
both the original source and the Amiga version.

To convert a file with gif2png type "gif2png file.gif", the result will be
put in "file.png".

Gif2png is a binary compiled with SAS/C 6.56, the 68030/68882 version
is named gif2png_030. The speed benefit of the 68030 version is only
about 11%.

The sources are intended for compilation with SAS/C 6.56.

To get the original sources, perform a reverse patch:
patch -p1 -R <amiga.diffs