ImageToSTL.online

Yes, the four core modes (Photo Relief, Logo Extrude, Lithophane, Keychain) are completely free forever with no watermarks, account sign-ups, or conversion limits. All processing happens locally in your browser.

No, for the free modes, your image never leaves your device. All conversion happens locally using your browser's capabilities. Only the optional, paid AI Full 3D mode sends an image to a server for processing.

The tool supports PNG, JPG, WebP, SVG, GIF, and BMP formats. For the cleanest results with logos and keychains, a PNG or SVG with a transparent background is recommended.

A lithophane is a thin 3D-printed panel where the thickness varies with the brightness of a photo. When held against a light source, the image appears. It's best printed in white PLA with 100% infill, standing vertically.

Yes, the generator creates a closed, manifold (watertight) mesh with a solid base. It exports a standard binary STL file that slices cleanly in popular software like Cura, PrusaSlicer, and Bambu Studio.

The free modes use deterministic heightmap or silhouette conversion, which is not AI-based. The optional 'AI Full 3D' mode uses AI technology to generate a full 360-degree colored mesh from a single photo and is a paid feature.

Use the Keychain mode. It will extrude your image's silhouette and automatically add a 4mm hole at the top. You can then download the STL and print it flat on your print bed.

For reliefs and keychains: print flat, 0.12mm layer height, 15-20% infill. For lithophanes: use white PLA, 100% infill, print standing vertically for best detail.

The free modes convert a photo into a heightmap (relief) based on brightness, not color. For a full-color 3D model from a single photo, you would need to use the paid AI Full 3D mode.

This is a premium feature that uses AI to generate a complete, textured, 360-degree 3D model from a single product photo (like a mug or toy). It's powered by server GPUs and requires purchasing credits.