Vextrude
Free · No signup · Runs in-browser

Free Online Photo Lithophane Maker

Turn any JPG or PNG photo into a 3D-printable lithophane in six shapes — flat, curved, sphere, dome, heart, or wave. Export STL in seconds. No signup, no watermark, your photos never leave the browser.

Six Lithophane Shapes

Each shape is tuned for a different use — picture frames, lamp shades, ornaments, or keepsakes.

Flat panel

Classic rectangular lithophane. Fits any picture frame with a backlight.

Curved arc

Gently curved surface for lamp shades and tealight wraps.

Sphere

Full globe. Wraps your photo around a lit sphere — great for ornaments.

Dome

Half-sphere for ceiling or flush-mount light fixtures.

Heart

Anniversary, wedding, and memorial gift favourite.

Wave

Undulating surface for decorative panels and modern art pieces.

How It Works

1

Upload your photo

Drag in any JPG or PNG. High-contrast portraits and landscapes give the sharpest results.

2

Pick a shape & resolution

Choose flat, curved, sphere, dome, heart, or wave. Set resolution (300–600) and thickness (2.4–3.2 mm).

3

Export STL and print

Download the STL, slice with 0.12 mm layers and 100% infill, print in white PLA.

Try it right here

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Lithophane FAQ

What is a photo lithophane?

A lithophane is a thin 3D-printed panel that reveals a photograph when backlit. Variations in the panel's thickness create the light and shadow that form the image.

How thick should a lithophane be?

Most printed lithophanes are between 2.4 mm and 3.2 mm thick. Thinner panels let more light through but lose detail; thicker panels have crisper shadows but need stronger backlighting.

What resolution should I use?

300–600 is the sweet spot in Vextrude. Lower values (100–200) export faster but look pixelated. Higher values produce larger STL files but print almost photographic detail with a 0.12 mm layer height.

Which lithophane shapes can I make?

Vextrude supports six shapes: flat (classic panel), curved (arc-shaped for lamp shades), sphere (full globe), dome (half sphere for ceiling lights), heart (decorative gift) and wave (undulating surface).

What material should I print a lithophane with?

White PLA is the most popular choice. It diffuses light evenly and shows sharp contrast when backlit. Natural (uncoloured) PLA and translucent PETG also work. Avoid dark filaments — they block too much light.

Which 3D-printer settings work best?

Use a 0.4 mm nozzle with a 0.08–0.12 mm layer height, 100% infill, and print slowly (about 30 mm/s). Turn off ironing and avoid supports — lithophanes print best face-down on the build plate.

Do I need to sign up or pay?

No. Vextrude's lithophane maker is free, runs entirely in your browser, and never uploads your photos to a server.

Can I use the lithophane as a gift?

Absolutely. Heart and dome shapes make popular anniversary, wedding and memorial gifts. Pair the printed panel with a small LED tealight or picture-frame backlight.

Want a deeper walkthrough?

Read our complete 2026 guide — from photo selection to slicer settings.

Read the guide

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