Convert photos and logos to printable STL instantly: contour stamps or lithophane reliefs, free online.
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Convert 2D images to 3D printable STL. Contour mode extrudes stamps and logos; heightmap mode generates lithophane light panels and photo reliefs. Adjustable resolution and smoothing, outputs monochrome geometry, ready for major slicers.
Source image: 512×512 grayscale bitmap
Contour mode: Max height 5.0mm, base 2.0mm, 48,260 triangles
Heightmap mode: Max height 8.0mm, smooth lvl 2, 131,072 triangles
DefaultContour
Select how the image should be converted into 3D geometry.
Generates solid shapes with uniform thickness from image outlines. Ideal for stamps, logos, nameplates, and other uniform-thickness objects.
Creates a relief surface based on image brightness, so brighter areas are raised and darker areas are recessed. Perfect for photo reliefs, terrain models, and artistic surfaces.
DefaultOff
Swap which parts of the image become solid and which become empty. Useful when the background is lighter than the subject.
Default128
Range0 – 255
Controls the brightness cut-off point that determines which pixels become solid geometry. Lower values include more pixels as solid; higher values only include the darkest areas.
Default10
Range1 – 100
The thickness of the extruded geometry in millimeters. Controls how tall the final 3D model will be.
Default0.5
Range0 – 5 · step 0.1
Adds rounded edges to the contour shape for a smoother, more polished finish. Higher values create more rounded edges.
Default3
Range1 – 8
The number of segments used to create the bevel curve. More segments produce smoother bevels at the cost of more geometry.
Default0.8
Range0 – 1 · step 0.1
Preserves sharp corners and fine details by controlling the angle threshold. Lower values protect more detail; higher values smooth more aggressively.
Default1
Range0.1 – 2 · step 0.1
Controls the resolution of the generated mesh. Higher quality produces smoother surfaces but larger file sizes.
Default5
Range0.5 – 20 · step 0.5
The maximum height of the raised areas in millimeters. Controls the overall relief depth.
Default1
Range0 – 5 · step 0.5
The thickness of the flat base plate beneath the relief. A thicker base provides more stability for printing.
Default2
Range0 – 10
Applies smoothing to the heightmap surface to reduce noise and stair-stepping artifacts. Higher values produce smoother surfaces.
Default400
Range100 – 400 · step 50
Controls the detail level of the generated mesh. Higher resolution preserves more image detail but increases file size.
DefaultOff
Swap the height mapping, so brighter areas become recessed and darker areas become raised.
Select a PNG, JPG, or SVG graphic to convert into a 3D relief mesh.
Set the relief extrusion depth and base thickness in millimeters.
Toggle invert brightness and smoothing levels to refine fine surface details.
Export watertight STL file ready for lithophane or tactile relief printing.
Heightmap mode maps brightness to thickness, ideal for lithophane light panels and photo reliefs; contour mode extracts outlines to extrude solid shapes, suitable for stamps, logos, and silhouettes. You can switch modes and adjust resolution before conversion.
For stamps/logos, use transparent backgrounds or high-contrast black-and-white images. For photo reliefs/light panels, use clear, moderately contrasted grayscale or color photos. For complex backgrounds, crop the subject first.
Contour solids are usually ready for Cura, PrusaSlicer, Bambu Studio, etc. For reliefs/lithophanes, check base thickness and minimum wall thickness, and add supports if needed.
No. STL only stores geometry. For colored models, use 'Image to 3MF' instead; you can also paint after printing.
This happens when no region meets the extraction threshold, typically an almost-uniform image, an overly aggressive threshold, or a very low-contrast subject. Increase the contrast, adjust the threshold or target, or switch to heightmap mode instead.
Heightmap mode maps brightness to height, so a low-contrast source produces a shallow relief. Raise the max height setting (up to 20 mm) and increase the contrast of the source image; low-contrast photos inherently yield flatter results.
Yes, Any3D's core features are free to use forever. We provide format conversion, model optimization, and online preview at no cost, with no registration required.
No. Files you select are processed only in your browser on this device, so they never leave your device and are never sent to our servers. We don't store any user files; after processing, related data in browser memory is released.
No installation required. Any3D is entirely browser-based; just open the webpage to use all features. It works on Windows, Mac, Linux, and other major operating systems.
The processing capacity depends on your device performance and the model's vertex count and texture complexity, rather than file size alone. We impose no file size limit, but when a model exceeds what your device can handle, the page may lag or even crash.
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