01
Tree
Each row is one level. A tile shows exactly the pixels of the image it stands for; hover one to see where it lives.
click to split
hovered node + ancestors
parent → child
One square image. Cut it into four equal quadrants, then cut each quadrant the same way. Every square that ever existed becomes a node, and each node's four children sit directly beneath it. Click the image to add a level.
Each row is one level. A tile shows exactly the pixels of the image it stands for; hover one to see where it lives.