Why is my low poly 3D model too heavy?

Your low poly 3D model is too heavy primarily due to hidden high-poly details, unoptimized textures, or redundant geometry like overlapping faces. - Hidden high-poly details: Unapplied modifiers (e.g., subdivisions) add extra vertices without visible changes to the model. - Unoptimized textures: Using high-resolution (4K) instead of 1K textures increases file size even with few faces. - Redundant geometry: Duplicate vertices or overlapping faces bloat the model unnecessarily. To lighten it, apply all modifiers first, reduce texture resolution, or use a decimation tool (like Blender’s Decimate modifier) to remove unused vertices—this preserves the low poly aesthetic while cutting down on weight.