Reducing poly counts on CAD files
3D CAD files can open up a world of possibilities in Unity, but may need some adjustment for best performance. Learn how to reduce CAD file sizes for a runtime environment here.


If you want to use 3D CAD files to create a virtual item for use inside Breakroom (for instance, if you have a CAD file of your corporate headquarters that you want to upload as a landing region), you will probably need to reduce the size of those files for optimal performance in a runtime environment. You can consult our Review Policies for more information about recommended poly counts.

Reducing poly counts in Blender

You can use the Decimate modifier in Blender to lower the poly count of your model. Start by importing your model into Blender. Select the model in the Hierarchy.
Blender, with a high-poly model imported for use and selected.
With the model selected, click the wrench icon in the bottom right window. In the Add Modifier drop-down menu, select Decimate.
The location of the wrench icon and the "Add Modifier" menu.
In the Decimate window, you can see that the face count for this object is currently 1,007,616. Adjust the Ratio slider to reduce the face count, and then click the Apply button.
The Decimate window, with the ratio slider and "Apply" button visible.
In the picture above, you can see that the ratio has been reduced to 0.8, which is 80% of the original. This gives us an adjusted face count of 806,092.
More information on using the Decimate modifier can be found in Blender's documentation.

Recommended software

In addition to Blender, there are a number of software solutions for reducing polycount on large files. We recommend the following.
Last modified 5mo ago