About the lab
We make color by number pages that work equally well on paper and on a screen.
Every picture here starts as flat-color artwork and goes through our numbering engine. The engine splits it into spaces, numbers each one, and builds three things from the same data: the printable page, the colored answer key, and the online version you can tap to color.
Each picture is checked before it goes live. Every space must carry a number, the numbers must be readable at print size, and no two colors in a key may be too close to tell apart. There are 131 pictures so far, with new ones added each week.
Free for home and classroom use
Print as many copies as you like for your family, class or group. Please link to a page rather than re-hosting the files.