Voxel Forge — Pixel Art to 3D (GLB, OBJ, STL, VOX, GIF)

Drop in a sprite. Get a real 3D model. Voxel Forge turns pixel art into coloured, game-ready voxel models in one click, and exports them to every format you actually use: GLB, OBJ, PLY, STL (3D printing), MagicaVoxel .vox — plus turntable GIFs to show them off.

It's one HTML file. It runs 100% offline in your browser. Nothing is uploaded, there's no account, no subscription, nothing to install.

Try before you buy

Run the free demo right here on this page — no download needed (images up to 32 px, GLB export). If it does what you need, the full version below unlocks every format and 256 px sprites.

What it does

• Three shapes — Extrude (flat slab), Pillow (rounded, thicker in the middle) and Heightmap (brightness becomes thickness: coins, reliefs, terrain)
• One-click presets — Game sprite, Chunky toy, Relief, 3D print
• Soft shadows baked in — ambient occlusion is written into the exported vertex colours, so your model looks good in any engine without lighting tricks
• Smart pixel-art detection — a 16×16 sprite saved at 256×256 is shrunk back to its real pixels automatically
• Real-world size — set what one voxel is: millimetres for STL, metres for glTF
• Print-ready STL — always watertight, lying flat or standing upright
• Share it — export a spinning turntable GIF or a 2048 px render in one click
• Live 3D preview: drag to rotate, wheel to zoom, Space to auto-rotate. Your settings are remembered.

Exports

• GLB — Godot, Unity, Unreal, Blender, three.js
• OBJ and PLY — universal, with vertex colours
• STL — Cura, PrusaSlicer, OrcaSlicer, Bambu Studio
• .VOX — open and edit in MagicaVoxel
• GIF and PNG — for sharing

Tested, not guessed

Every export format was imported into Blender and checked: same volume, same colours, closed meshes for printing. The mesh code is covered by 90+ automated tests.

Good to know

• Works in any modern browser (Chrome, Edge, Firefox, Safari). No install: unzip and double-click index.html.
• Images are limited to 256 px on the longest side (larger ones are resized). Thickness up to 64 voxels.
• .vox export supports up to 256 voxels per side and 255 colours.
• Free updates for everyone who owns it.

Questions or ideas?

Leave a comment below — I read every one and I'm adding features based on what people ask for. Made by LITE.