The distance can be in absolute intensity units or, by appending % as a percentage of the maximum possible intensity (255, 65535, or 4294967295).
The -fuzz 7% option is documented here - it treats similar colours as the same colour: I ran this against this 1.3MB animated GIF: This saves over the original, so make a copy of it first.
Which gave me a 723KB file which I think looks good enough for my purposes:įound this tip on Stack Overflow: to reduce the site of an animated GIF, you can use the mogrify tool like this: mogrify -layers 'optimize' -fuzz 7% sqlite-convert-demo.gif So I tried this instead: gifsicle -O3 -colors 128 -lossy -o datasette-launch-smaller-2.gif datasette-launch.gif The reduced colours there were a bit too much for me, especially for the purple gradient buttons at the end. rw-r-r- 1 simon wheel 613K Sep 13 12:54 1 simon wheel 3.7M Sep 13 12:52 datasette-launch.gif O3 - try several optimization methods (usually slower, sometimes better results). O2 - also uses transparency to shrink the file further. tmp % gifsicle -O3 -colors 48 -lossy -o datasette-launch-smaller.gif datasette-launch.gif gifsicle -resize 300x200 -i animation.gif > animation-clipped.gif Gifsicle has three types of GIF optimization to choose from: -O1 - stores only the changed portion of each image.
#GIFSICLE OPITMIZTION INSTALL#
I installed it using brew install gifsicle and ran it like this: /tmp % ls -lah 1 simon wheel 3.7M Sep 13 12:52 datasette-launch.gif You can tweak the number of colours and loss to get it smaller but that’s when it starts to look worse to my eyes New users may want to skip to the Examples section at the end. The next sections index gifsicles options and describe them in gory detail.
Options like -delay, -loopcount, and -optimize will help you tune your animations see their descriptions for more details. Saw your GIF size TIL, and gifsicle -O3 -colors 48 -lossy gets it down to 320k. gifsicle pic1.gif pic2.gif pic3.gif > animation.gif. Simon Willison’s TILs Compressing an animated GIF with gifsicle or ImageMagick mogrify Using gifsicle Compressing an animated GIF with gifsicle or ImageMagick mogrify | Simon Willison’s TILs
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