JPEG → Printable STL: photo reliefs/lithophanes, or contour solids, free online.
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Designed for JPEG photos (same as JPG): heightmap maps brightness to reliefs and lithophanes, contour extracts outlines for solids. JPEG is lossy with no alpha channel, so use clear images with minimal compression artifacts. All processing is completed locally 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 in a JPEG: there is no alpha channel, so use clear images with minimal compression artifacts.
Heightmap suits portraits/landscapes and lithophanes; contour extracts solid outlines from high-contrast patterns.
Adjust thickness and resolution, then download the STL.
No essential difference: JPEG and JPG are the same image format with different file extensions. This page is tailored for "jpeg to stl" search queries; the functionality is identical to JPG to STL.
Heightmap generates height based on brightness, suitable for photo reliefs and lithophanes; contour extracts outlines and extrudes solids, suitable for high-contrast icons and silhouettes. JPEG has no transparency, so for cut-out stamps, transparent PNG is recommended.
Use high-resolution images with clear contrast and minimal blocky artifacts; you can enhance contrast or convert to grayscale first. Low-quality JPEGs will leave noise on the relief surface.
Contour solids can usually be sliced directly; for reliefs/lithophanes, check the base thickness and wall thickness. STL does not contain color; for colored models, use "JPEG to 3MF".
Base thickness is set in millimeters (0-5 mm). A 1-2 mm base is a common starting point for lithophanes so the panel stays sturdy while remaining translucent; for plain reliefs on a slab, 1-3 mm works well.
Heightmap mode raises the bright areas by default, so dark-on-light images can come out inverted. Use the invert option to flip the direction, or start from a properly exposed image, and check the preview before exporting.
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