Current tools: Draw: default mouse operation Picker: click to pick a color. converts to RGB because I'm too lazy to code an RGB to HSV encoder right now. Arrows at the top control which page you're on. Landscape with plus to append a new page. Landscape with X to delete the page you're on. Sliders in the top left for HSV. HSV/RGB changes the color format from HSV to RGB. this also happens when using the color picker. Generate button will generate the command for you once you're ready.
A little project I made in one day that turns your art into a Minecraft book using commands. Once you generate the artwork, scroll to the bottom of the outputs, triple click the new output, do CTRL + C, then when in game, paste the command into a command block and activate it. You should now get your new artwork! 1.0 - created 1.1 - added FZMM mod support and a shortcut (f) to the color picker was added