I really enjoy using the NES Pictionary drawing tool, and I was curious if you might add the ability to import a drawing I'd previously exported? You made a really neat and unique art creation tool I love using, and I wish there was a way to view illustrations done in the tool without needing to keep the tab open forever. Another alternative would be a clean image export without the gridlines (similar to how they're presented in the NES Pictionary posts), but I don't know if that's harder, so I dunno.
responding to this one four months late...
I've added a feature for this, if you put ?drawing= followed by the export data, on the end of the URL, the editor will load from that.