Select a character to edit, either from the font preview or from the input field. Enter in a specific index, or use the scroll wheel to navigate through the character set.

Select a color to paint pixels.

Left-click on a pixel to change its color. Right-click on a pixel to clear it (set to transparent). Hold mouse button to paint a continuous area.

Ctrl + Z to undo, Ctrl + Y to redo.

Gray pixels are only visible when using specific OSD renderers. They will show as transparent in other renderers.