Zing Origami is an ebook featuring twelve origami origami models with step-by-step folding instructions. The design challenge was that the book is very graphics-heavy compared to a typical ebook. It contains hundreds of diagrams, which had to be legible across different tablet and smart phone devices. I introduced the format of one step per page to provide a better user experience than other origami ebooks. The drawings were registered so that steps would correspond across page turns. The book was a hit. Zing Origami was the number one selling origami ebook the year it was released.