Material Merger is a Blender add-on designed to optimize 3D models by consolidating multiple materials applied to a mesh into a single, unified material. This process helps reduce draw calls and improve overall performance, which is particularly beneficial for game development, real-time rendering, and asset exporting.

The tool automates the process of material consolidation, allowing users to combine selected materials without losing the underlying mesh structure. This is useful for cleaning up imported models with unnecessary material splits or preparing scenes for export to engines like Unity, Unreal, or WebGL. The add-on includes specific support for Unity workflows. When dealing with a large number of materials, it is recommended to process them in smaller batches to avoid performance issues in Blender.