This is the #19 time you posted the same project. (9 times in the last 4 days). A few repost are ok, but reposting too much will make users unhappy and flag your posts and later make mods ban your site or your account.

I tried the live demo https://pixelcraft.web.app/

It is weird that the undo button undo the operation pixel by pixel, instead of a global operation.

It's very interesting the "eye" tool to jump to a previous version.