Convert Any Image to an STL File for 3D Printing

When you convert an image to an STL, you’re turning a flat 2D picture (PNG, JPG, etc.) into a 3D mesh made of triangles. STL files store only shape—not color—so the converter has to infer height, thickness, and relief from brightness and edges. Most image‑to‑STL tools create heightmaps or relief models, which are perfect for lithophanes, logos, and engravings, rather than full 3D characters.

You can upload PNG and JPG images up to 10MB. For the best image‑to‑STL conversion results, use clear, high‑contrast images with simple shapes and well‑defined outlines—especially for logos, icons, and text.

Most image‑to‑STL conversions finish in a few minutes, depending on the complexity and size of the image. After you upload, we process the image, infer depth, generate the 3D mesh, and then prepare an STL file you can download and open in your slicer.

You can upload and preview images without an account, but you’ll need to sign in to start a conversion job and download STL files. An account also lets you save and revisit previous image‑to‑STL conversions.

High‑contrast images with simple silhouettes, logos, line drawings, and text usually produce the cleanest STL files. Complex photos can still be converted, but they are better suited for relief art or lithophanes and may require more cleanup.

Yes. You own the rights to STL files generated from your own images. You can use them for personal or commercial 3D printing projects such as custom merch, signage, keychains, or prototypes—subject to any rights on the original artwork you upload.

If your STL looks too flat or like one solid slab, it usually means the original image had low contrast or very subtle differences in brightness. Increase contrast, simplify the background, or use a bolder version of your artwork before converting the image to STL for a stronger sense of depth.