Image2STL

What is Image2STL?

Image2STL turns a PNG, JPG, WebP or SVG into a printable STL in four ways. Relief raises brighter pixels above a flat base, Lithophane makes a flat panel where darker areas are thicker so they block more light, Silhouette uses the transparent background of an image to cut out its outline, and SVG Vector Extrude turns filled vector shapes into a crisp solid.

You set the width in millimeters, a resolution of 128, 256 or 512, the base thickness and relief depth (or the panel or extrusion thickness), contrast and smoothing, and generate a 3D preview you can rotate before you download. The site is open about its limits: a relief is 2.5D, not a full 3D model of the object, and the STL has no colors. It checks that the mesh is closed, and its example files show the dimensions, triangle count and number of shells they produced.

It is free, needs no account, and the conversion runs in your browser, so your images are not uploaded. Separate pages cover PNG, JPG, heightmap, logo and silhouette to STL. It suits logo signs, keychains, coasters and simple photo plaques; for curved or lamp lithophanes, use a dedicated lithophane tool.

What you can make

• Photo and heightmap reliefs
• Flat lithophane panels
• Logo and icon cutouts
• Extruded SVG shapes for signs and keychains

How to use Image2STL

1. Upload a PNG, JPG, WebP or SVG
2. Pick relief, lithophane, silhouette or SVG extrude
3. Set width, resolution and thickness, then generate
4. Check the 3D preview and download the STL