A RoboFont extension that renders a mirrored glyph in the background which updates as you edit your drawing, to make it simple and quick to achieve symmetry.

This can be helpful in cases such as:

• Achieving vertical symmetry in a glyph like C.
• Achieving horizontal symmetry in a glyph such as arrowup.
• Achieve vertical and horizontal symmetry in a glyph like O.

(Obviously, geometric symmetry isn't necessarily optical symmetry, so use this tool judiciously.)

Mirror Glyph lives in the RoboFont Inspector for easy access.

A project by Rafał Buchner and Arrow Type.