1.91: Merge pull request #10 from toy/merge-later-changes

Merge later releases 1.89, 1.90, 1.91

-O3 works

To use:

./gifsicle -O3 --lossy=80 -o lossy-compressed.gif input.gif

Adjust --lossy argument to suit quality (30 is very light compression, 200 is heavy).

Improved dithering

1.2MB (was 1.9MB, original 3.3MB)

Lossy animgif recompressor

••• A newer release with an important bugfix is available •••

To use:

./gifsicle --lossy=80 -o lossy-compressed.gif input.gif

Adjust --lossy argument to suit quality (30 is very light compression, 200 is heavy).

It works best if the input image/anim is high quality and doesn't have heavy dithering (lossy compression will add its own dithering).

Demo

3.3MB original

1.9MB lossy

Big thanks to Nico Bergemann for finding the bug that was stopping this release.

••• A newer release with an important bugfix is available •••

Still buggy

Warning: please verify that the animation plays fine in Firefox. The program may sometimes generate corrupted files, but not all browsers verify that files are valid.

Buggy preview

Warning: there's a bug in the encoder that may cause invalid GIFs to be produced.