GIF optimizer gifshrenk

Removes completely transparent frames from a GIF file.

It is recommended to run gifsicle -O2 -o final.gif output_of_gifshrenk.gif before and after running gifshrenk to get the file even smaller.

If gifshrenk says Warning: Detected an impossible pixel value, the output file will be significantly larger than the input file, but this is not an error. Just reoptimize the target file with gifsicle and the file should then be smaller than the original file. The reason to this is that gifsicle somehow appears to be capable of generating images that contain more colours than the header indicates there being. Giflib however is not capable of encoding those pictures, so the color resolution must be increased temporarily.

ea has been written by Joel Yliluoma, a.k.a. Bisqwit,
and is distributed under the terms of the General Public License (GPL).

GNU make is probably required.
Requires libgif or libungif.

Does not handle the "dispose" value properly.

The official home page of gifshrenk is at http://iki.fi/bisqwit/source/gifshrenk.html.
Check there for new versions.