To bake a low poly 3D model, transfer texture details (e.g., normals, ambient occlusion) from a matching high poly model using 3D software like Blender or Substance Painter.
Baking turns high poly surface details into 2D textures for the low poly model—this keeps it lightweight while retaining visual complexity. First, UV unwrap the low poly model and align it closely with the high poly to ensure accurate detail transfer.
For beginners, try Blender’s built-in Bake panel: Align your high/low poly models, set the high poly as the “High” object, choose a map type (Normal is most common), and click Bake—this is a simple way to practice without extra tools.