To reduce a 3D tree model’s details while keeping its core shape (trunk, main branches), use polygon decimation tools like Blender’s Decimate modifier to lower face count.
- Decimation targets non-essential geometry (e.g., tiny branches, overlapping leaves) so the tree remains recognizable. - For real-time uses (games/AR), simplify leaf textures or replace dense foliage with billboards to save performance. - If you’re new, start with a low decimation ratio (0.2–0.5) in Blender—adjust gradually to balance detail and file size.
This way, you’ll shrink the model without losing its natural look.