What is MeshRefinery?

MeshRefinery is a free online 3D model repair service that fixes broken meshes, such as open edges, holes, and non-manifold geometry, so they are accepted by slicers. It supports STL, OBJ, GLB, glTF, and 3MF formats and runs entirely in the browser using WebAssembly, ensuring privacy. The tool also offers format conversion and an AI-powered image-to-3D generation feature.

How to use MeshRefinery?

1. Drop your 3D file (STL, OBJ, GLB, glTF, or 3MF) onto the website. 2. The tool instantly parses the file in your browser and shows a diagnosis report. 3. Review the report to see issues like open edges or holes. 4. Click to repair or convert the file, then download the result directly to your device.

Core features of MeshRefinery

Watertight repair: fixes holes, non-manifold edges, and floating debris
Format conversion: STL, OBJ, GLB, glTF, 3MF
Live 3D preview: rotate and inspect models before and after operations
Instant diagnosis: flags open edges, non-manifold geometry, floating shells, and degenerate faces
Local-first processing: WebAssembly in browser, no uploads
No account required for core tools
Image to 3D generation (AI)