Image → 3D · Heightmap
Image to STL
Turn any photo, logo, or drawing into a printable 3D relief or lithophane. Brightness becomes height — drop an image and download an STL. Free, instant, 100% local.
No image handy?
How to use it
- Drop a PNG or JPG above (high-contrast images give the cleanest result).
- Pick Relief (bright = taller emboss) or Lithophane (dark = thicker, glows when backlit).
- Set the physical width and thickness, then download a watertight STL.
Converting an image to STL (2D to 3D)
An image-to-STL converter maps brightness to height: each pixel's lightness sets how tall that point is, producing a 3D surface from a flat image. Flip3D turns that heightmap into a watertight solid — a raised relief to print flat, or a lithophane that reveals the image when backlit.
It's a 2D-to-3D workflow that works for photos, pictures, logos and line drawings. Drop the image, tune the width, base and max thickness, preview it in 3D, and download a slicer-ready STL. Everything is local: no upload, no signup, no watermark.
Frequently asked questions
- How do I convert an image to STL?
- Drop your image (PNG, JPG or WebP) above, choose relief or lithophane, set the size and thickness, and download the STL. Brightness is turned into height, so light areas rise and dark areas stay low.
- Can I 3D print a photo or picture with this?
- Yes. This is a 2D-to-3D converter — a photo, picture, logo or drawing all work. For a portrait, use lithophane mode so the image shows when backlit; for logos, a plain relief prints cleanly.
- Is the image to STL converter free?
- Yes — free, no signup, no watermark, and no file-size paywall. It runs locally in your browser with WebGL.
- Does my image get uploaded anywhere?
- No. There is no server and no upload. The image is converted entirely on your device and nothing is stored.
- Can I export OBJ instead of STL?
- Yes. The same heightmap pipeline can output a Wavefront OBJ — use the Image to OBJ page if your workflow needs OBJ.