LightWave object MIME Type

Learn what model/x-lwo identifies, how LightWave object files are encoded, and how Poly supports them.

MIME type details for model/x-lwo

In active use
MIME typemodel/x-lwo
Extensions
.lwo
First standardizedUnknown
Created byNewTek
Browser support
Example applicationsLightWave 3D, Foundry Modo
Poly supportPartial. Poly recognizes this 3D media type and processes supported files.
Indexed by PolyYes. Poly indexes filenames and visual similarity for processed geometry; scene counts are displayed in Details.
Preview in PolyPartial. Poly provides an interactive preview for supported constructs.
Poly agentYes. An optimized rendition of the 3D object or scene is provided to the agent, allowing compact yet information-rich multimodal interaction with 3D files.

What does model/x-lwo mean?

LWO is LightWave's object format. LightWave's documentation says saving an object produces LWO, while Foundry documents LWO2 import/export with UV, weight, morph, and color vertex maps.12 LWO stores object geometry and surfacing information, but a scene may still refer to external image maps or other assets.

The associated extension is .lwo. The media type identifies this format family; it does not convert bytes or guarantee support for every feature.

Poly support

Poly can recognize this type as 3D content, index filenames and visual similarity for processed geometry; scene counts are displayed in the Details panel, and provide an interactive preview when the file imports successfully. Poly does not promise to resolve every external object, material, texture, or animation reference in a scene.

An optimized rendition of the 3D object or scene is provided to the agent, allowing compact yet information-rich multimodal interaction with 3D files.

Opening and conversion

Use LightWave 3D or another format-aware tool when preserving editability matters. Conversion to glTF or OBJ can improve interchange for viewing, but may discard application-specific scene data.

Footnotes

  1. https://docs.lightwave3d.com/2025/export-group.html.
  2. https://learn.foundry.com/modo/content/help/pages/system_files/import_export.html
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