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Voxel Builder

API—OSS—FREE—DOCS5/5
VB5.6#10 of 26
outWeboutWindows—MacoutLinuxoutAndroidoutiOS

Ranked in Voxel Editors ·No free plan on record

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About

Voxel Builder is a voxel-based 3D modeling application for building, editing and rendering voxel scenes. It includes terrain, cube, sphere and isometric generators, along with interactive modeling, symmetric drawing and painting, transforms and color groups. For rendering, it offers a Three.js sandbox, GPU path tracer, basic PBR and post-process effects. It can voxelize models in GLB, OBJ, STL and PLY formats, as well as images and Unicode or emoji text. Projects save and load as JSON or MagicaVoxel VOX files, and can export to GLB, GLTF, OBJ, STL or PLY. Local storage, snapshots, quicksave, undo and redo, and ZIP snapshot backups are supported. A Blender importer script is included, and baked GLB meshes can be used in Blender and other 3D software. The project describes the app as ad-free, without trackers or logging, and usable online or offline. It is free under GPL-3.0, with browser support on desktop and mobile and Electron downloads for Linux x64 and Windows x64.

Who it is for

Voxel Builder suits people making voxel scenes who want modeling, rendering and format conversion in one tool. Its tablet-and-pen recommendation may also appeal to artists working on supported mobile browsers.

What is good

  • Free, with code under GPL-3.0
  • Imports common model formats and images
  • Exports GLB, GLTF, OBJ, STL and PLY
  • Includes Blender importer and baked mesh workflow
  • Usable online or offline

What to know first

  • High voxel volumes can lower frame rates
  • Browser storage is limited
  • GLB geometry animations are unsupported for voxelization
  • Dense scenes can increase GPU load

Verdict

Voxel Builder covers modeling, rendering, conversion and project saving, with broad browser access and Blender support. Plan for performance and browser-storage limits when working with larger scenes.

Compared on voxel editors

Free plan
Yesgithub.com
Animation tools
Nogithub.com
Game engine export
Yesgithub.com
Texture painting
Yesgithub.com
Supported platforms
Electron on Windows and Linux; Chrome and Firefox on desktop and mobilegithub.com

Facts

Purpose
Voxel Builder is a voxel-based 3D modeling application.github.com · 2 Oct 2026
Modeling
It offers terrain, cube, sphere, and isometric generators, interactive modeling tools, symmetric drawing and painting, voxel transforms, and color groups.github.com · 2 Oct 2026
Rendering
Rendering features include a Three.js sandbox, GPU path tracer, basic PBR rendering, and post-process effects.github.com · 2 Oct 2026
Voxelization
It voxelizes 3D models in GLB, OBJ, STL, or PLY formats, as well as images and Unicode or emoji text.github.com · 2 Oct 2026
File formats
It saves and loads JSON and MagicaVoxel VOX files and exports GLB, GLTF, OBJ, STL, and PLY.github.com · 2 Oct 2026
Project saving
It supports local storage, snapshots, quicksave, undo and redo, and sharing snapshot backups in ZIP archives.github.com · 2 Oct 2026
Blender
The project includes a Blender importer script, and baked GLB meshes can be used with Blender and other 3D software.github.com · 2 Oct 2026
Privacy
The project describes itself as ad-free, with no trackers and no logging.github.com · 2 Oct 2026
License
The code is released under the GPL-3.0 license.github.com · 2 Oct 2026
Platforms
It supports Electron, Firefox, and Chrome; the README specifies desktop and mobile browser support and says it is PWA add-to-home-screen ready.github.com · 2 Oct 2026
Downloads
The installation instructions list Electron downloads for Linux x64 and Windows x64.github.com · 2 Oct 2026
Offline use
The project describes itself as portable and usable online or offline.github.com · 2 Oct 2026
Performance limitation
The README reports low frame rates at higher voxel volumes and recommends Electron for working with many voxels.github.com · 2 Oct 2026
Import limitation
The README says geometry animations are not supported for GLB voxelization.github.com · 2 Oct 2026
Intended hardware
The README recommends a tablet with a pen or a Wacom tablet for the best experience.github.com · 2 Oct 2026
Integrations
The project provides a Blender importer script and says baked meshes can be used with Blender and other 3D software.github.com · 3 Oct 2026
Mobile use
The app is PWA add-to-home-screen ready, and the project recommends a tablet with a pen or Wacom for the best experience.github.com · 3 Oct 2026
Performance limits
The project notes that high voxel volumes can reduce frame rates and dense scenes can increase GPU load.github.com · 3 Oct 2026
Import limits
The project states that geometry animations are unsupported for GLB voxelization and recommends merging meshes with matching properties before export when mesh merging errors occur.github.com · 3 Oct 2026
Storage limits
The project warns that browser storage is limited and recommends Electron for higher capacity.github.com · 3 Oct 2026

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Where it ranks on Inferse

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