Online Utilities & Diagnostics
Free 3D Mesh Repair Tools
Check and repair broken 3D models on TEELI servers, from your browser. Eliminate non-manifold edges, inverted normals, and unprintable defects before slicing.
STL ToolBrowser Check
Fix Non-Manifold STL Online Free
Diagnose and repair non-manifold edges, open boundary holes, and inverted normals in STL files. Free online STL repair tool, Mac/Linux compatible, zero signup.
Launch Tool→
STL ToolBrowser Check
Repair STL File Online
Repair an STL file online: a free check counts open holes, non-manifold edges and flipped normals, then fix it. STL, GLB, zipped OBJ up to 200 MB. Any OS.
Launch Tool→