Open ASCII or binary STL files locally in an inspection-grade 360° viewer with engineering views, measurement, X-ray, section planes, screenshots/fullscreen, topology diagnostics, dimensions, area, and volume.
Before slicing or sharing a model, makers often need both a real spatial preview and quick measurements. This viewer keeps the STL on your device while providing an interactive solid 3D inspection workspace.
The browser parses STL triangles, runs shared-edge topology diagnostics, calculates bounds/surface/volume statistics, builds the exact local Three.js mesh, and provides orbit, measurement, clipping-section, X-ray, screenshot, and fullscreen inspection without sending geometry to a server.
No. It currently inspects the mesh and reports measurements; it does not silently alter geometry.
Raised text is readable from its intended front face and naturally appears mirrored when you rotate behind the model. Use the Front preset to verify the intended +Z face.
STL volume calculations assume a closed mesh with consistent triangle orientation.