Why convert VSJ to OBJ?
Wavefront .obj needs real vertex and face data, which a .vsj never stores. So instead of converting the VSJ itself, you recover the referenced mesh - either from the matching VSB archive or by exporting from ViewSTL - and convert that to OBJ.
How to convert VSJ to OBJ
Unzip the matching VSB FREE
If you also have the scene's .vsb, rename it to .zip and extract the STL models inside, since the VSB packages the .vsj together with the actual STL files.
Blender OPEN-SOURCE
Import the recovered .stl with File > Import > STL, then run File > Export > Wavefront (.obj) to get an OBJ mesh.
About these formats
A .vsj file is a ViewStl JSON scene file created by the ViewSTL online 3D viewer and its JavaScript plugin. It stores the state of a 3D scene as plain-text JSON, including canvas and…
Open .VSJ details →
.OBJ
Wavefront OBJ (3D geometry)
An OBJ file is a 3D model in the Wavefront OBJ format - a plain-text list of vertices, faces, and surface normals. Open it free with Blender, the Microsoft 3D Viewer on Windows, or…
Open .OBJ details →Quality & what to watch
- There is no direct VSJ-to-OBJ path because the VSJ carries no geometry, only scene metadata.
- You must have access to the STL models the VSJ points to; a lone
.vsjwith missing models cannot produce any mesh. - STL and OBJ store only surface triangles, so color, materials and scene layout from the ViewSTL scene are not preserved.
Frequently asked questions
Why can't I just convert .vsj to .obj directly?
How do I get the actual model out?
download_model() as STL, or extract the STL from the matching VSB archive.
