great post, thanks for sharing! (Liked.)

Have to admit I almost wanted to start bashing you :) when I read through your text and saw "GIF is animated" kind of stuff -- but you very nicely pulled it off by immediately adding the real meaning of the acronym we old farts know since its inception back in '89 or so...

Those animated GIFs have been pretty centre-stage for those infamous banner ads that popped up during the dot-com mania. Brings back memories...!

Glad that you got it right and found a way of writing a nice and easy-to-read tutorial here. Nice job.