JPEG to color 3MF: color photo reliefs and color previews, free online.
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Convert JPEG photos to color 3MF (a format related to JPG). Use height maps for color photo reliefs; use contours for solid outlines. Lossy compression can affect fine color bands, so use a high-quality export. Entirely processed in your browser.
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 and drop your JPEG file or click to browse.
Choose contour or heightmap mode and adjust parameters.
Click Convert and immediately download your 3MF file.
They are simply different filename extensions for the same image format. This page is tailored for the search term 'jpeg to 3mf'; the conversion capability is the same as JPG to 3MF.
3MF supports color information, which is essential for color printing and slicer previews; STL only includes geometry. For color photo reliefs or when color blocks matter, choose 3MF.
Heavy compression may cause color banding and noise in smooth gradients, which become more noticeable in the 3MF. For best results, use a higher quality export, or apply moderate sharpening and noise reduction before converting.
Most modern slicers and color printing workflows that support 3MF can import the file. The final color outcome depends on the printer and material; it's advisable to test a small sample first.
Yes, it does. The conversion samples the source pixels, so small or heavily downscaled JPEGs result in soft edges and blocky color areas. Use the largest, cleanest export you have; the output resolution setting can refine geometry, but it can't add details that the source never had.
Yes, the 3MF file contains embedded color data, so modern slicers such as Cura, PrusaSlicer, and Bambu Studio display a colored preview before printing. This lets you check colors without wasting material, but the final print color depends on your printer and material.
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