ImageToStl

What is ImageToStl?

ImageToStl is a free browser tool that converts PNG or JPG images into heightmap or extruded 3D models for printing. Heightmap mode raises bright areas and keeps dark areas low, which gives you a relief or textured plate, while extrude mode traces the shapes in a logo or silhouette and pushes them up into clean solid geometry.

Options include inverting the height, smoothing to remove spikes, a depth curve, outline simplification, a solid base and an optional keyring loop. Color variants of both modes carry the image colors into formats that support them. You can download STL, 3MF, OBJ, GLB and several other formats, and the same site offers dozens of other converters, from PNG to SVG to conversions between 3D and CAD file types.

There is no account and no cost. Generated files are deleted after 4 hours, or kept for 24 hours if you create a long-term download link. Large images are scaled down to about 1,000 to 1,200 pixels (the site quotes both), so very fine detail is limited. It suits quick logo plaques, textures and simple reliefs when you do not want to install anything.

What you can make

• Logo plaques
• Heightmap reliefs
• Extruded silhouettes
• Textured plates

How to use ImageToStl

1. Open the image to STL converter
2. Upload a PNG or JPG
3. Choose heightmap or extrude and set the options
4. Convert and download the STL or 3MF