The models category covers 3D and CAD interchange formats, each carrying one small, documented solid so you have a known shape to convert and inspect. The mesh formats hold a real 10 mm cube: STL in both ASCII and binary encodings, a Wavefront OBJ, and a 3MF manufacturing package. There's a DXF drawing of the same cube as 3D line geometry, an EPS vector illustration, and minimal well-formed STEP (AP214) and IGES samples for testing header and entity parsing. Every file states its geometry, units, and structure, so you're converting against a known object rather than a mystery mesh.
Filter models on Browse · 192 files · 21 subcategories
Results start with a representative from each related test family. Use a card’s variant menu or the filters below to reach a specific format, profile, or failure case; every sample retains its own detail page and download.
One small, documented solid (a real 10 mm cube) so you convert against a known object. It ships as ASCII and binary STL, Wavefront OBJ, and a 3MF package, with a matching DXF line drawing and EPS vector illustration.
Yes, minimal well-formed STEP (AP214) and IGES samples are included specifically for testing header and entity parsing.
Yes, dense↔decimated GLB pairs, broken↔repaired mesh twins, and point-cloud PLY sets share group IDs so you can test decimation, mesh-repair, and point-cloud pipelines against a reference.
Every file states its geometry, units (millimetres for the cube), and internal structure in its spec, so you're testing a known mesh rather than a mystery file.
Start with one example from each use-case group, then continue through its other test families. Choose a use case, search, or filter to find a specific profile; a card’s variant menu contains its related samples.
85 test families · 192 available files · Page 1 of 5
Animation
A single animation whose four channels drive two nodes at once: the parent's translation, rotation and scale, and a spinning child that inherits all of it. The fixture for checking that channels are applied per node and
Buffers
The binary payload the external-buffer glTF in this group points at: tightly-packed positions, normals and indices with 4-byte alignment padding. Not viewable on its own: its bufferViews live in the JSON.
Business Cad
A ground-floor plan for Alder Table Bistro as DXF R2010, 14.0 by 9.0 metres, 126.0 square metres gross with a 37.8 square metre kitchen. 8 AIA-style layers authored (10 in the file, because a DXF always carries layer 0 a
Cad
A 10 mm cube drawn as 12 DXF LINE entities: the AutoCAD interchange format, written with ezdxf. For testing DXF parsers and CAD conversion.
Compression
An unquantised sphere: 32-bit floats for both positions and normals, 24 bytes of attribute data per vertex. The uncompressed reference for the quantized and gzip twins in this group.
Decimation
Low-poly simplification of the same cylinder shape (36 triangles vs 192). Compare against the dense ground truth to measure decimation error.
Degenerate
The clean reference cube as a GLB, so the same baseline is available to glTF tooling and to the site's 3D preview. Identical topology to the OBJ twin in this group.
Lod
The same unit sphere at 16,128 triangles: level 0 of a four-step ladder that spans 202x from top to bottom. Because every level is generated analytically from the same surface rather than decimated, the ladder is an exac
Low Poly
A low-poly chair (a seat, four legs, and a backrest) as a self-contained vertex-coloured GLB. Real, recognisable geometry (not a primitive) for testing glTF loaders, the 3D viewer, and thumbnailers.
Materials
The same sphere and the same brushed-metal material as the OBJ+MTL pair in this group, but as a single self-contained GLB. Convert the OBJ+MTL and diff against this to score an OBJ-to-glTF material converter.
Mesh
A 10 mm cube as 3MF: the modern OPC-packaged manufacturing format (a ZIP of model XML plus relationships). For testing 3MF readers and slicers.
Morph
A morph target stored as a sparse accessor: only 25 of 289 vertices carry a delta, and the accessor has no bufferView at all, so every other vertex reads as zero. Sparse accessors are the least-implemented corner of the
P8 Convert
JSON semantic reference for the 3DS tetrahedron, publishing vertex order, face indices, bounds, and the closed-mesh contract. Stable P8 artifact p8-convert-model-3ds-reference.
Point Cloud
The same 1,200-point coloured sphere as a GLB using the POINTS primitive mode, for testing point-cloud rendering in glTF viewers.
Point Cloud Ai
Dense, noise-free point cloud sampled on the dome surface: the reconstruction target for scoring a photogrammetry / point-cloud-cleanup tool.
Repair
Deliberately broken box mesh (missing top face). Feed to a mesh-repair tool and compare the result against the watertight ground truth.
Scene Graph
One box mesh referenced by a 24-deep chain of nodes, each adding a translation, an 11-degree rotation and a 0.94 scale, so the result spirals. Any error in matrix accumulation compounds visibly by the tip instead of hidi
Teapot
A procedurally-built teapot (a surface-of-revolution body and lid with a stepped spout, a torus handle, and a knob) as a self-contained GLB. The classic teapot shape, for testing 3D loaders and the model viewer.
The use-case group filter replaces the long list of category sections.
