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Liang Ding
January 20, 2026
Question

Unable to import model

  • January 20, 2026
  • 1 reply
  • 33 views

I’m getting an “Unable to Import Model” error when importing an OBJ into Adobe Dimension. The file opens correctly in other software, so it doesn’t appear to be corrupt, but Dimension fails immediately with no additional error details.

 

I’m also getting an error when trying to upload the OBJ to this forum, so here's a Dropbox link to the file instead: https://www.dropbox.com/t/t2nRIl3TJNCG7Qt5

 

Any insight into Dimension’s OBJ requirements or limitations would be appreciated.

1 reply

Ares Hovhannesyan
Community Expert
Community Expert
January 21, 2026

I am able to import it into Dn after toggling OFF UV generation on import: May be something is wrong with UV's. See below requirements OBJ files for importing into Dn

 

Screenshot 2026-01-21 195523.pngScreenshot 2026-01-21 195443.png

 

 

 

 

Here’s a clear breakdown of Adobe Dimension’s OBJ file requirements and limitations, based on Adobe’s documentation and community discussions:

✅ Supported OBJ Requirements

  • Geometry:

    • Triangles and quads are supported.

    • N-gons (polygons with more than 4 sides) may cause import errors.

  • UVs:

    • Proper UV mapping is required; Dimension does not auto-generate UVs.

    • Overlapping or missing UVs can cause texture issues.

  • Normals:

    • OBJ must include vertex normals for correct shading.

  • Scale:

    • Models should be scaled reasonably (Dimension uses centimeters as units).

  • File Size:

    • Large OBJ files (hundreds of MBs) can fail to import due to memory limits.

 

⚠️ Limitations

  • No Animation Data:

    • OBJ format in Dimension supports only static meshes (no rigging, bones, or animation).

  • Material Support:

    • Dimension reads .MTL files linked to the OBJ for basic material definitions.

    • Complex shaders (procedural, multi-layered) are not supported.

  • Topology Issues:

    • Non-manifold geometry, inverted normals, or missing faces can cause “Unable to Import Model” errors.

  • Unsupported Features:

    • OBJ files with embedded references to external textures or unsupported extensions may fail.

  • File Path Issues:

    • If the .MTL references textures with absolute paths or missing files, Dimension may reject the OBJ.

 

🛠️ Best Practices

  • Export OBJ with triangulated meshes from your 3D software.

  • Ensure clean UVs and consistent normals.

  • Keep file size manageable (optimize mesh density).

  • Place textures in the same folder as the OBJ and MTL.