Image to STL: from a photo to a printable file

There is no direct "image to STL" converter that works in one step — an image has no depth information, so something has to invent the geometry. That something is now AI. The reliable free workflow in 2026 is: AI image-to-3D → GLB → STL, and it takes about five minutes.

Step 1 — generate the mesh (free)

Upload your photo to the Pic2Mesh generator. TRELLIS reconstructs a full, watertight-ish mesh — including the back of the object the camera never saw — and you download a GLB. One object on a plain background works best; 3 free conversions a day, no signup.

Step 2 — skip the conversion if you can

Modern slicers import GLB directly: PrusaSlicer, Bambu Studio, and OrcaSlicer all accept GLB/OBJ, so you can drop the file in and slice — no STL needed at all.

Step 3 — or export STL in Blender (2 clicks)

If your tool insists on STL: open Blender → File → Import → glTF 2.0 → File → Export → STL. Textures are discarded (STL has none) — only the shape matters for printing.

Print settings that work for AI meshes

• Scale first — AI output has arbitrary units, set real dimensions in the slicer
• Run the slicer's mesh repair; AI meshes occasionally have thin walls
• Tree supports handle organic overhangs best; 10–15% infill for figurines

Start with a free generation or read the full photo-to-3D-print workflow.