Upload STEP, IGES or BREP files and view them in 3D — parsed locally by OpenCASCADE WASM, rendered with Three.js. Rotate, zoom, wireframe and export PNG. No upload.
Views:
Meshes: —Triangles: —Vertices: —File: —Bounding box (W × H × D): —
Parsing model…
Mesh precision (tessellation)
0.10
0.50
Lower values = denser mesh (slower). Click Re-tessellate to re-read the current file with these values.
Export 3D
Exports the loaded mesh only (grid/lights excluded). Runs Three.js exporters lazily on first click.
Measure
Click the button, then click two points on the model surface. Distance is shown in model units; bounding box is in the stats row.
Clipping plane
mid
Slices the model along the chosen axis. Slider 0..1 sweeps across the bounding box.
Material & lighting
0.05
0.55
0.55
Upload a STEP (.stp/.step), IGES (.igs/.iges) or BREP (.brep/.brp) file. The OpenCASCADE WASM engine parses it locally in your browser, then Three.js renders the tessellated mesh. Drag to rotate, scroll to zoom, right-drag to pan. Click Fit to reframe, toggle Wireframe, or export a PNG snapshot. The first load downloads the WASM engine (~1.5 MB) — your file never leaves the browser.