Kinegram
Kinegram is a small project to generate... Kinegrams. They are this near optical illusions, which can create moving images from pieces of paper. It hides all the frames of a gif in between black bars so that each frame gets revealed when moving the transparency over the top.
The site does everything on the front end, generates all of the necessary imagery and packages it in a zip folder and also creates the gif to preview the end result