What is the .stl format used for?

STL stores triangulated 3D mesh geometry and is widely used in 3D printing and CAD export workflows.

Does STL include materials or color?

Classic STL is mostly geometry-only. Some variants support color metadata, but many pipelines treat STL as plain mesh triangles.

No. Local drag-drop and Browse loads are processed in your browser. URL loads fetch directly from the source host and require CORS.

開いて view STL 3D models online. Drag-drop, Browse, URL load, and fallback parsing are supported client-side.

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