Paper folding simulator

• Upload the front and back surfaces of the paper. Click and drag over the back to crop it to the dimensions of the front.
• Click Valley or Mountain, or type v or m, to switch between fold types before placing the line.
• Place a marker in an area by clicking in it on the front surface, then finish the line by placing a second; when you have placed your lines, press Fold image.
• Hold Shift while placing a second marker to snap to 45° increments (customisable). Note that the simulator is very sensitive to line angles.
• If desired, manually adjust each piece's orientation (face-up or face-down) and z-index (order from top to bottom, with the largest at the top).

Front Back

• ° Snap increment
• Valley colour
• Mountain colour
• Marker colour