If I paste the following URL into Facebook I can share an animated gif. It\'s not a movie and not flash, Facebook now supports gifs without those workarounds. I can click it
I have been working on this for a while with Facebook debugger and found how to post swf but just today I also successfully posted my animated gif.
I simply pasted my link https://www.example.com/my.gif into Facebook debugger and it said could not find URL but displayed fine giving app id number and then I went ahead and posted in my timeline for all to see :) So no html or tags to achieve that but simply a secure link to my gif file on my server.
Never did I work out how to achieve it via html embedded!