← CAD and mesh conversion guides

OCCT conversion workflows

STEP to glTF / GLB

Convert STEP to glTF or GLB for web visualization. Prepare BRep or mesh input, assembly placements and appearance through an OCCT document workflow.

Build this conversion into your application with OCCT readers, writers and the commercial components identified below.

Ask about this workflow
Input interface
OCCT STEP reader
Processing route
CAD to mesh
Output interface
OCCT glTF writer

Prepare STEP models for a web viewer

STEP-to-glTF conversion turns engineering product data into a scene representation for browser visualization and other graphics applications. GLB is the binary packaging option in the glTF workflow. Select the delivery form according to how the application loads and distributes its assets.

STEP can supply BRep or mesh data. Tessellate the BRep surfaces that need conversion and prepare any existing meshes for scene export. The document workflow connects model items, placements and supported appearance to the outgoing scene.

Keep assembly identity through scene preparation

Read the assembly into an XDE document when structure and attributes matter. Decide which components to include and how their names and placements map to scene nodes. Repeated part instances deserve explicit checks so that each occurrence appears at the correct location.

Configure surface detail for the intended viewing distance and device. A mesh suitable for a close inspection may be unnecessarily large for a catalog thumbnail. Express Mesh provides tessellation controls, while Light Web Viewer supplies browser inspection tools for the resulting asset workflow.

Check appearance and delivery cost

Verify the scene tree, transforms, names and appearance supported by both interfaces. Measure conversion time, asset size, first display and interaction separately. Where external resources are used, ensure they travel with the scene.

The mesh scene is a visual derivative of the STEP source. It does not retain the original analytic surfaces or CAD feature history. Keep the engineering source available for editing, manufacturing operations or another mesh configuration.

Conversion integration

Build a STEP to glTF / GLB workflow

Share the source and receiving applications, representative files, required attributes and throughput. We can scope SDK evaluation or an integrated conversion service.