Free browser STL checker
Parsing triangles and building a mesh topology report locally.
- Checks
- 5 issue families
- Privacy
- Local first
Free browser STL checker
Check STL mesh health before you slice.
Drop an STL file to diagnose open-boundary signals that may indicate holes, non-manifold edges, normal mismatches, duplicate faces, degenerate triangles, and watertightness signals. The check runs locally in your browser.
Anonymous browser check: 10MB or 100,000 triangles. No production upload is required for this preview.