Add your photo
Drop a PNG, JPG or WebP. It turns into a lithophane right away, with a backlit preview.
Free Image to STL Converter
Turn a photo into a 3D-printable lithophane or relief, as STL or 3MF. Set the size and thickness in millimetres and preview it lit from behind.
Open Image to STL Converter →How to turn a photo into an STL
Set size and thickness
Choose the width, the thinnest and thickest points and a frame, or switch to a relief.
Download and print
Save an STL or 3MF and slice it. Print lithophanes upright in white PLA.
Getting a great lithophane
Print upright
Standing the plate on its edge gives fine vertical detail and no visible layer steps in the picture.
Use 100% infill
Any gaps inside show up as patterns when the light shines through.
White filament
Plain white PLA spreads light evenly. Coloured or translucent filament tints and blurs the photo.
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Image to STL converter FAQ
Is this image to STL converter free?
Yes. Make and download as many lithophanes and reliefs as you like, with no account or watermark.
What is a lithophane?
A thin plate whose thickness follows a photo: dark areas are thick and let little light through, light areas are thin. Unlit it looks like a white carving; held up to a lamp or window, the photo appears.
Which settings should I use for a lithophane?
Start with 0.8 mm thinnest, 3 mm thickest and a 3 mm frame, in white PLA. Print it standing upright with 100% infill and a 0.1–0.12 mm layer height for the smoothest result.
What is the difference between a lithophane and a relief?
A lithophane is made to be lit from behind. A relief is a carving to look at directly: bright parts (or, if you choose, dark parts) stand up from the base.
Which photos work best?
Photos with clear contrast and a simple background: portraits, pets, landscapes and the moon. Very dark or flat photos give a dull lithophane.
Is my photo uploaded?
No. The plate is made in your browser; the photo never leaves your device.
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