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Vector & CAD format

FBX converter

An .fbx file is a 3D scene interchange document that can carry polygon geometry, transforms, materials, textures, cameras, skeletons and animation in either a compact binary encoding or a readable ASCII encoding. It is broader than a mesh file: one FBX may describe a complete authored scene.

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Drop FBX files here

Batch files can each use a different output. Nothing uploads for local conversions.

Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.

Where FBX comes from

FBX began as the interchange format for Kaydara Filmbox motion-capture software. Autodesk acquired Kaydara in 2006 and made FBX a common hand-off among 3ds Max, Maya, MotionBuilder, game engines and content marketplaces. Its broad adoption is practical rather than archival: the specification and SDK remain controlled by Autodesk, and different exporter generations can produce materially different dialects.

How FBX works

  • Binary FBX starts with the Kaydara FBX Binary signature; ASCII FBX starts with a comment naming the FBX version.
  • PolygonVertexIndex uses a negative final index to terminate each polygon; the stored negative value decodes as -n-1.
  • Nodes and connections form a scene graph, so geometry can be instanced and transformed rather than stored once per visible object.
  • Units, axis conventions, materials, skinning and animation are distinct layers that simple triangle targets cannot all represent.

When to use FBX

  • Moving authored scenes between DCC applications
  • Importing marketplace assets into a game or rendering pipeline
  • Recovering surface geometry from a legacy production asset
  • Flattening a self-contained model for printing or web display

Strengths and limitations

Strengths

  • Supported by most major 3D authoring tools
  • Carries far more than triangle geometry
  • Binary files are compact compared with equivalent text scenes

Limitations

  • Proprietary and version-sensitive
  • External texture references can make a file incomplete
  • Flattening to a mesh loses rigs, animation, hierarchy and most materials

Compatibility

Autodesk tools, Blender, Cinema 4D, Unity, Unreal Engine and many asset pipelines import FBX. Novus Convert accepts bounded self-contained binary and ASCII polygon geometry and converts it locally to STL, OBJ, 3MF, GLB, glTF, PLY or USDZ. The output contract is geometry-first: transforms are applied, while materials, texture references, rigging and animation are explicitly reported as losses.

Scene transforms are applied to geometry; names, materials, animation, cameras and authoring metadata are not preserved by the geometry-only route.

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