How to open STEP, STP, IGES, IGS, BREP files online
STEP and IGES are widely used to exchange mechanical and manufacturing models. OpenCascade WebAssembly triangulates the B-Rep locally for interactive viewing.
- Choose a STEP, STP, IGES, IGS, or BREP file.
- Wait for local geometry parsing and triangulation.
- Orbit, zoom, and inspect dimensions and mesh statistics.
Why use this viewer
- No SolidWorks or Creo installation
- Your file is read and processed only in this browser tab. It is never uploaded to FreeTool servers.
- Multiple industrial exchange formats
Compatibility and limitations
- Large assemblies can use substantial browser memory
- Preview only; verify manufacturing dimensions in professional CAD software
Frequently asked questions
Are STP and STEP different?
They are normally alternative extensions for the same STEP standard data.
Is the model converted on a server?
Your file is read and processed only in this browser tab. It is never uploaded to FreeTool servers.