Very impressive that I can sketch a character in the top-left and get a close match. That's a real highlight showing that there's more going on under the hood than a big look-up table.
I made a similar tool that in my opinion looks better and is more useful for finding characters. I feel that the tool the OP posted seems cool for short periods of entertainment, but isn't very useful for utility. Link to the website here: https://unicode-atlas.vercel.app