# 3D Model Optimizations

* The model should be scaled to real life sizes and the origin point should be at the center of the model before exporting.
* For the model to be efficient, the poly count should be kept as low as possible. All the textures exported should go through a compression pass using online compressor tinypng.com or similar.
* Lower the size of the model, the better would be the loading speed.
  * Ensure the number of vertices/triangles/polygons is as low as possible. 
  * Ensure textures are compressed
  * Bake the textures into the model. Keep textures less than 4k resolution.

### 3D Model Details and File Size Recommendation​

|         Element        | Recommended Max Triangles Count | Recommended Max File Size |
| :--------------------: | :-----------------------------: | :-----------------------: |
| 3D Models - Cumulative |               50K               |            50MB           |
| Colliders - Cumulative |                5K               |            5MB            |

{% hint style="info" %}
The above recommendation is for the whole scene. This is, **less than 50k triangles, 50MB file size in total for a scene** (i.e. the sum of all triangles/file sizes for all 3D Models in a scene).
{% endhint %}

### Baking Textures into 3D Models

This is workflow we recommend. <https://sketchfab.com/blogs/community/sketchfab-archvis-workflow-based-on-vray-baked-textures/>&#x20;

#### **Steps:**&#x20;

* Decide to combine all objects or do them as individual objects
* Texture your model correctly with properly unwrapped UVs - no overlaps
* Setup good lighting and test it in quick render modes
* Bake and export textures

#### Other Workflows:

* <https://docs.chaos.com/display/VMAX/Basic+Texture+Baking+with+V-Ray>
* <https://www.youtube.com/watch?v=r0M363A8um4&ab_channel=DeepakGraphics>&#x20;