Image to lithophane STL or 3MF
Convert photo brightness into printable thickness for backlit prints. Dark areas become thicker by default, bright areas stay thinner so light can pass through. Free to use, with no account or sign-up required.
3D preview
Upload an image to preview the heightmap mesh.
Lithophane defaults
Use light or translucent filament and place a light source behind the print. A thinner minimum thickness gives brighter highlights; a thicker maximum improves shadows but needs stronger backlight.