Optimize OBJ Files Online — Remove Duplicate Vertices
Optimize your OBJ (Wavefront Object) files by removing duplicate vertices, normals, and UV coordinates.
Last updated Mar 2026
Usually under 3 seconds — depends on file size.
When to Use OBJ Optimizer
CAD Export Cleanup
CAD tools (Fusion 360, SolidWorks, Rhino) often export OBJ with redundant vertices. Optimize before importing to Unity or Unreal Engine.
Game Asset Optimization
Reduce OBJ file size for game engines. Smaller files mean faster loading and lower memory usage.
TurboSquid/CGTrader Download Cleanup
Purchased a model from TurboSquid or CGTrader? Optimize to remove any inefficiencies from the original export.
Blender Import Speed
Blender loads OBJ faster when vertices are deduplicated. Optimize large models before importing.
Web3D Asset Preparation
Before converting OBJ to GLB for WebXR, optimize to reduce the source file size. Smaller input means smaller GLB output.
How It Works
OBJ files store vertices (v), normals (vn), and UV coordinates (vt) separately, then reference them in faces (f). Some exporters create duplicate vertices — storing the same coordinate multiple times.
Our optimizer builds a hash map of all vertex coordinates (quantized to 6 decimal places to handle floating-point imprecision), identifies duplicates, merges them into single entries, and updates all face references accordingly.
File size reduction depends on input quality. CAD exports typically see 20-40% reduction. Hand-crafted models see 5-15%. No geometry change — face topology, materials, and UV coordinates remain unchanged.
Typical processing time: 2-5 seconds for files under 10MB.