File Optimization

Target file metrics (ranked in order of importance)

Objects:
- - Recommended: <10
  - Maximum: 20
Vertex count:
- - Recommended: 100k.
  - Maximum: 300k
Triangles:
Textures:
- - Recommended: 1024px x 1024px, and a maximum of 8 textures.
  - Maximum: 1024px x 1024 px, up to 16 textures OR 2048px x 2048px, maximum of 4 textures
Shaders:
- - Recommended: Unlit
  - Supported: Unlit, Metallic/Roughness PBR

Recommendation: Bake in lighting into your texture for a more impressive model.

How to optimize textures

Try downsizing the textures first (You can do this in MS Paint or Photoshop)

The more textures that are in the model, the more important it is to keep them at a lower resolution

Export as jpg instead of png if there is no need for an alpha channel

How to optimize models

Using Blender you can use the Decimate Modifier.

For more advanced decimation tools see recommendations below.

Other resources for decimation

Sketchfab Help

Pixyz

Microsoft’s recommendations for decimation

At Microsoft we have Simplygon, and that’s certainly an option. It has various APIs and is quite scriptable. But that’s historically been used for large game titles and has traditionally been licensed per shipping title.

MeshLab is an open-source option with automatic mesh optimization.

File Conversion

How to convert your 3D file to GLB

FBX, gLTF, and GLB are supported, but GLB is our recommended file type.

Explore the tools below to convert your models.

Conversion Tools

GitHub - Facebook Incubator FBX to glTF - need to use it through command line
GLB Packer - use this to convert from glTF to GLB(especially useful if taking models from Sketchfab, or if using non-embedded glTF)
Article on converting Step files - .stp files to glTF
Creators 3D Online Conversion Tool

Export Settings/ Embedding

All the textures should be embedded in one fbx or glb, separate texture files won’t be loaded

- Some software embeds media automatically so this setting may not be visible, check to make sure.

* If you have any questions please reach out to support@spatial.io *

- GLB is our recommended file type, but we also support FBX and glTF

- Make sure when exporting your file, you enable "embedded media"/ textures if available

- When ready to upload, follow the instructions here.