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Engineering-grade 3D, in the browser

Beyond visualization,
into understanding.

Unravel3D turns 3D engineering models into engineering intelligence. Geometry operations, design analysis, manufacturability checks, and performance simulation, all from a browser with no installs.

Unravel3D 3D model in the browser viewer
10+
Native formats: STEP, IGES, USD, GLB, STL, OBJ
B-Rep
CAD round-trip. Original geometry preserved, not just triangles
25+
Geometry operations covering repair, analysis, reconstruction, and more
0
Local installs, plugins, or per-seat licences required
Capabilities

An engineering workbench, not just a viewer

Most browser 3D tools stop at rendering. Unravel3D understands the geometry beneath the surface, and turns that into decisions you can ship.

Native CAD import

STEP, IGES, USD, GLB are read with OpenCASCADE so the original B-rep, face IDs, and assembly structure are preserved, not flattened.

Analysis & FEA

Catch design risks early with per-face heatmaps for wall thickness, stress, and curvature. Run full structural FEA with material assignments and boundary conditions, and see displacement and stress fields animated directly in the viewport.

Geometry Operations

From mesh repair and simplification to surface reconstruction, geodesic paths, and precise measurement, the geometry toolkit covers the full range of operations engineers need day to day.

DFM checks

Draft, undercut, overhang, and machining-access analysis flags manufacturability problems while the design is still cheap to change.

Assembly intelligence

Interference detection, exploded views, and disassembly sequencing built on exact boolean geometry, not bounding-box approximations.

Flexible Export

Export at any stage of your workflow in the format your downstream tools expect. Standard open formats keep every result accessible across your pipeline with no proprietary lock-in.

Showcase

What you actually see in the workbench

From CAD import through analysis to exportable insight, the journey happens in a single browser session.

Import & Inspect

CAD-native geometry, ready in seconds

Drop a STEP or IGES file. The model loads with its native B-rep, BREP face IDs intact, ready for interrogation, not collapsed into anonymous triangles.

  • STEP, IGES, USD, GLB, OBJ, STL all first-class
  • Per-face selection on the original CAD topology
  • Auto-sized reference axes, planes, and section tools
CAD model loaded with topology
Analyze

Engineering signal, not just a render

Run geometry operations and multi-physics analysis on the same model, in the same session. Results come back as heatmaps and animated overlays directly on the part.

  • Per-BREP-face averaged metrics, no tessellation noise
  • Geodesic paths, mesh repair, decimation, and Poisson reconstruction in the same session
  • Structural FEA and aerodynamic CFD simulation with industry-standard solvers
Analysis heatmap in the viewer
Export

Export at any stage, in any format

Export at any point in the workflow, in the format your downstream tools expect. Industry-standard outputs mean results travel seamlessly to the rest of your toolchain.

  • Multiple open formats with no proprietary lock-in
  • Export geometry at any stage, whether repaired, simplified, or reconstructed
  • Import native CAD formats and export into whatever your downstream workflow requires
Exportable CAD with embedded insight
Powered by industry-standard engineering kernels
OpenCASCADE CalculiX gmsh trimesh Pixar OpenUSD Three.js Python, Flask, GCP Cloud Run

Ready to see what your CAD has been hiding?

Launch the workbench, drop a model, and watch geometry become engineering intelligence.

Launch the App