ColorStack – Multicolor 3D Prints, Lithophanes & FlatStack

Start with an Image

PNG, JPEG, or BMP up to 10MB.

Upload Image

Drag and drop or click to browse

Workflow

From image to printable model.

Upload Your Image

Start with a clean source image for the strongest preview.

Color Processing

Tune bands, layer heights, and palette order in the editor.

Export STL

Generate a model for slicer setup and filament swaps.

ColorStack

Browser-based 3D printing tools for multicolor prints

Create multicolor 3D prints, lithophanes, and flat color designs right in your browser.

Browse all tools · Guides · Pricing

ColorStack mode

Filament painting and multicolor layered prints—a practical HueForge-style workflow without CAD.

Filament painting · Image to STL · 3MF export

LithoStack

Image-to-lithophane with grayscale and CMYK color workflows, shape masks, and STL/3MF export.

Lithophane generator · CMYK lithophane · Image to STL

FlatStack

Flat multicolor plates for signs, logos, magnets, coasters, badges, and 3D printed business cards—not height-based relief.

Flat multicolor prints · Logo to STL · SVG to STL

Popular tools

Filament painting for 3D printingColorStack mode builds color-layer topography from your image so thin filament layers optically blend into a full-color front-lit print—no manual CAD painting.Lithophane generatorLithoStack in ColorStack converts photos into printable lithophane heightmaps. Upload an image, preview the relief, choose a shape, and export STL without CAD.FlatStack flat multicolor printsFlatStack is for flat color surfaces, not height-based lithophanes. Upload artwork and build a thin multicolor plate ready for STL or 3MF export.Multicolor 3MF export3MF carries more than geometry—it can include materials, objects, and slicer-friendly structure. ColorStack Pro exports 3MF for supported multicolor workflows.

Guides

How to make a lithophaneA lithophane is a thin plastic relief that reveals an image when light shines through it. This guide covers preparation, settings, printing, and lighting.How to create flat multicolor 3D printsFlat multicolor prints are front-viewed plates with distinct color layers. FlatStack quantizes artwork into printable bands on a thin solid mesh.3MF vs STL for multicolor 3D printingSTL remains universal geometry. 3MF can package multicolor structure and slicer-friendly metadata. Choose based on your printer and patience for manual setup.

No install required. Export print-ready STL and 3MF files. Compare free and Pro.