The best alternatives to Facebook GIF Button are Giphy Chrome Extension, Netflix GIFs, and GIFscore. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Facebook GIF Button?
AssemblyAI— Speech-to-Text API with superhuman accuracy
Chrome extension to create GIFs from Netflix content! Just go to Netflix, press "g" to share your screen, and the GIF will auto download (after 30 sec or so).