>>1519965Pictures are made by hand in Photoshop or a similar tool and then used as frames for gif-creation. Gif is a really simple format that really just plays pictures as frames with defined time between transitions.
In this case for example the creation was pretty easy as obviously the only thing that had to be modified was a few white blocks and the text, both which an be done easily by havin them on a separate layer.
The background had to created by hand once, but it is not very complicated either.