Well sure, anyone could
I've never done anything specific like this, but I assume you'd just take a few screen shots of your stuff and have them on separate frames lasting about 1-2 seconds each
I usually use Photoshop for GIF things, but there are a lot of free online and browser GIF creators out there
If I wanted to do something like this overly complicated, without knowing any easy way though (or how to animate properly), I'd create an actual powerpoint, let the presentation play out while recording it with some screen recorder, then convert the video to a GIF animation so it can be embedded on the forum
Imo it's best to keep things simple 'cause a lot of people are lazy and you might lose them if you try to complicate things or make them fancier, plus doing it the way everyone else does with the image collages are somewhat better since you can see everything at once whereas if you were to loop images, people would have to wait until the loop repeats to see the other stuff again
This post was edited by Agonist on Feb 1 2016 05:46pm