Awesome Open Source
Awesome Open Source

Online 3D Viewer

Online 3D Viewer ( is a free and open source web solution to visualize and explore 3D models right in your browser. This repository contains the source code of the website and the library behind it.

Build status Build status Language grade: JavaScript

Start Page

Check the live version!


The repository is separated into two parts. See more information in the Developer Documentation.

  • Online 3D Viewer Website: Source code of the web solution with all of the pages and functions.
  • Online 3D Viewer Engine: Source code of the library to visualize models easily.

Supported file formats


  • obj (with mtl and texture)
  • 3ds (with texture)
  • stl (text and binary)
  • ply (text and binary)
  • gltf (text and binary)
  • 3dm (experimental)
  • fbx (experimental)
  • off (text only)


  • obj (with mtl)
  • stl (text and binary)
  • ply (text and binary)
  • gltf (text and binary)
  • 3dm (experimental)
  • off (text only)


  • Load model:
    • Select files from a file browser dialog.
    • Drag and drop files from your computer.
    • Specify files by web url.
    • Specify files by web url in hash parameters.
  • Explore model:
    • Orbit, pan, zoom.
    • Set up direction.
    • Fit to window.
  • Investigate model:
    • List used and missing files.
    • List all materials and meshes.
    • Show/hide and zoom to a specific mesh.
    • List materials used by a specific mesh.
    • Show model information (model size, vertex and polygon count).
    • Show custom properties stored in the model.
  • Export model to various format.
  • Embed viewer in your website.

External Libraries

Online 3D Viewer uses these wonderful libraries: three.js, jquery, pickr, fflate, draco, rhino3dm, web-ifc.

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