Image to 3MF converter for multicolor 3D printing

Image to 3MF is the right workflow when the picture is not just a shape, but a set of printable color regions. A 3MF file can carry separate objects and material assignments, while STL only stores triangle geometry. That difference matters for logos, car plates, signs, badges and keychains that need to open in OrcaSlicer or Bambu Studio with colors preserved.

How the workflow works

1. Upload a PNG or JPG image.
2. Choose how many printable colors the image should be reduced to.
3. Set the final width and the mesh resolution in mm/pixel.
4. Choose flat multicolor mode or color relief mode.
5. Export a 3MF file and assign filaments in your slicer.

Recommended starting settings

Flat multicolor vs raised color

Use flat multicolor mode when all colors should end at the same height, like a printed label. Use color relief mode when letters, borders or icons should rise above the base. Relief mode is useful for tactile signs, license-plate-style objects and logos where shadows from the geometry are part of the look.

Common mistakes

• Using too many colors creates more filament changes and usually makes slicing slower.
• Using extremely small mm/pixel values can create a very heavy mesh without improving the real print.
• Uploading JPEGs with compression artifacts can produce unwanted specks. PNG is better for logos.
• Expecting details smaller than the nozzle width to print cleanly usually leads to gaps or missing strokes.

Best use cases

The workflow is strongest for flat-color designs: logos, labels, keychains, badges, simple signs, car plates, name tags and icons. It is not intended to be a photorealistic lithophane or texture workflow; it is built around printable color regions.