Right now, you’ll have to know a little Python to get it going, but if it proves useful it could grow into something for anyone to use via a web interface. The GIF at the top of this post was made like so:
Credit for the idea goes to PastPages users who impressed me with GIFs of their own, including Jeremy Singer-Vine. Andrei Scheinkman, and Zachary M. Seward.
And please keep hacking on that new API!