PNG → Color 3MF: transparent backgrounds for color-printed badges and stamps, or color photo reliefs. Free online.
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Turn a PNG into a color 3MF, ready for color print previews and modern slicers. The transparent channel helps extract badge and logo contours; photos can become color reliefs through height maps. Final color still depends on your printer and material.
Original
Contour
Heightmap
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.
Drag in a PNG: transparent areas suit color badges and stamp outlines, while photos can be turned into color reliefs with a height map.
Pick contour or heightmap mode, then tune the resolution and level of detail.
Save the 3MF and preview it in a color printer or modern slicer; final colors depend on the printer and material.
3MF can carry color, which makes it better for color-printed badges and color relief previews; STL is geometry only. Choose 3MF whenever color matters, and use PNG to STL only for monochrome solids.
Transparent areas usually generate no geometry, leaving a hollow cutout with only the opaque subject. This suits transparent PNG stamps, badges, and silhouette-style logos.
The tool writes PNG colors into the 3MF as faithfully as possible. Clean, high-contrast images produce the most stable results; the final print color still depends on your printer, material, and slicer settings, so run a small test print first.
Images with clean edges and clear subject-background separation perform best. For badges and logos, favor transparent backgrounds; for photo reliefs, use an evenly lit, non-overexposed image and crop the subject if needed.
Contour mode merges similar colors into flat regions, so smooth gradients become stepped bands and subtle shading gets flattened. Heightmap mode keeps the photo colors as a textured surface, so choose it when you need smooth gradients.
Yes. Each extracted color region keeps its own color in the 3MF, so a multi-color logo appears in color in your slicer. Whether regions map to separate material slots depends on the slicer and printer; on single-material machines the colors act as a preview.
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