Repair 3D Model
Fix holes, duplicate vertices and flipped normals in your GLB, STL, OBJ or PLY model — right in your browser.
Select 3D Model file
or drop a GLB, STL, OBJ or PLY file here
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About 3D Model Repair
The 3D Model Repair tool cleans broken meshes so they can be printed, rendered or imported without errors. It welds duplicate vertices, removes degenerate triangles, closes open holes and recomputes normals for GLB, STL, OBJ and PLY models.
Repair runs locally in your browser with WebAssembly-friendly code, so your files are never uploaded to a server. The result is a clean, watertight-ready GLB that keeps your materials and textures.
How to Repair a 3D Model
- 1Upload your GLB, STL, OBJ or PLY file by clicking the upload area or dragging the file onto the page.
- 2Choose the repair steps you need: weld vertices, remove degenerate triangles, close holes and fix normals.
- 3Click Repair Model and wait a few seconds while the mesh is analysed and fixed.
- 4Download your repaired GLB and use it for 3D printing, game engines or AR.
💡 Tip: For 3D printing, keep all four options enabled, then check the result in a slicer. Very large holes (more than 1000 edges) are left open on purpose.
Common Use Cases
3D Printing
Close holes and fix inverted normals so slicers accept the mesh without non-manifold warnings.
Photogrammetry & Scans
Clean noisy scans with duplicate vertices and tiny triangles before further editing.
Game Assets
Fix lighting artifacts caused by flipped or missing normals on imported models.
AR & Web
Prepare models for web viewers and AR with consistent, clean geometry.
Technical Specifications
- Vertex welding with 0.00001 tolerance
- Zero-area and collapsed triangle removal
- Boundary-loop hole filling (up to 1000 edges per hole)
- Inside-out detection via signed volume and normal recomputation
- Runs 100% in your browser — no upload required
Why Choose Our to Converter?
Professional-grade 3D model conversion with advanced features
Texture & Material Support
Preserves textures, materials, and MTL files during conversion for accurate visual representation.
100MB File Size Limit
Upload and convert large 3D models up to 100MB. Perfect for detailed and complex models.
Fast Conversion (30s-2min)
Quick processing powered by optimized algorithms. Most conversions complete in under 2 minutes.
Secure & Private (Zero AI Training)
Files are automatically deleted after processing. Zero AI model training on your assets, and 100% user IP ownership.
100% Free to Use
No hidden costs, subscriptions, or limitations. Convert unlimited files completely free.
Additional Tools Available
Access compress, scale, viewer, watermark, and editor tools for complete 3D workflow.
Frequently Asked Questions
Find answers to common questions about this tool.
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