榜样:
http://coub.com/

工具:
http://makeagif.com/

ZH_CN:
用gifsicle优化GIF动图
http://www.webhek.com/post/optimize-gifs.html

小视频转换成GIF动图或将GIF动图转换成视频
http://www.webhek.com/post/convert-video-gif.html

GIF与视频转换的推特讨论
http://www.webhek.com/post/gif-video.html

US:
http://ezgif.com/optimize/ezgif-1-9823479b09.gif

http://www.iloveimg.com/download/3c0b51b9365dcc6265ae2054ff0f4915_7ad99ea8a1a5eaa9237

95b77fc93d0f0

http://resizeimage.net/ 多参数降质

http://gifgifs.com/optimizer/

优化文章

优化
https://photography.tutsplus.com/tutorials/how-to-compress-animated-gif-files-

without-losing-image-quality–cms-26557
命令行工具
https://github.com/kohler/gifsicle

优化PS
https://design.tutsplus.com/tutorials/10-ways-to-optimize-an-animated-gif-file–psd-34649

技术
php

Cropping and Resizing Animated Gifs with Gifsicle

NODE
http://www.jianshu.com/p/8a0d1285f5f8