Find files, editable templates and browser test targets by what you need to make or test. Explore complete business kits for connected records, templates and expected results.
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A smooth-shaded sphere as Wavefront OBJ with `mtllib`/`usemtl` pointing at a sibling MTL. Downloading the OBJ alone gives you the classic missing-material case; downloading both reproduces the glTF metallic-roughness twin in this group.
The same signpost as OBJ with coordinates in metres. OBJ has no unit record of any kind, so the two OBJ files in this group are byte-different and semantically identical: the ambiguity that every OBJ import dialog's scale box exists to resolve.
The same signpost as OBJ with coordinates in millimetres. OBJ has no unit record of any kind, so the two OBJ files in this group are byte-different and semantically identical: the ambiguity that every OBJ import dialog's scale box exists to resolve.
The coarsest level as plain-text OBJ: 80 triangles you can read end to end. Small enough to paste into a bug report, which is what makes it useful when a pipeline mangles winding or normals and you need the smallest reproducer.
Wavefront OBJ textured quad SAMPLE with MTL reference.
A 10 mm cube as a Wavefront OBJ, plain-text vertices and triangular faces, the lingua franca of 3D asset exchange. For testing OBJ importers and conversion.
The reference cube plus four triangles with no area, one for each way a mesh can have one: three collinear points, two coincident vertices at different indices, a repeated index, and all three indices identical. Their face normals are undefined, which is where downstream tools produce NaN.
A simple rendered street scene with a person, a car, and a tree at known pixel coordinates: the image the COCO, YOLO, and Pascal-VOC annotation twins describe. A fixture for testing object-detection loaders and annotation converters.
A single multi-turn chat example for an OCR assistant: system/user/assistant roles in JSONL.
A scanned-look JPEG of a handwritten-print form. Pair with the searchable PDF twin to score OCR against known text. Synthetic SAMPLE content only.
A searchable PDF handwritten-print form with selectable text: the OCR ground-truth twin of the scanned JPEG. Fictional SAMPLE content for measuring OCR accuracy.
A scanned-look JPEG of a id card mock. Pair with the searchable PDF twin to score OCR against known text. Synthetic SAMPLE content only.
A searchable PDF id card mock with selectable text: the OCR ground-truth twin of the scanned JPEG. Fictional SAMPLE content for measuring OCR accuracy.
A scanned-look JPEG of a invoice. Pair with the searchable PDF twin to score OCR against known text. Synthetic SAMPLE content only.
A searchable PDF invoice with selectable text: the OCR ground-truth twin of the scanned JPEG. Fictional SAMPLE content for measuring OCR accuracy.
A scanned-look JPEG of a multi-column article. Pair with the searchable PDF twin to score OCR against known text. Synthetic SAMPLE content only.
A searchable PDF multi-column article with selectable text: the OCR ground-truth twin of the scanned JPEG. Fictional SAMPLE content for measuring OCR accuracy.
A scanned-look JPEG of a pos receipt. Pair with the searchable PDF twin to score OCR against known text. Synthetic SAMPLE content only.
A searchable PDF pos receipt with selectable text: the OCR ground-truth twin of the scanned JPEG. Fictional SAMPLE content for measuring OCR accuracy.
A scanned-look JPEG of a utility bill. Pair with the searchable PDF twin to score OCR against known text. Synthetic SAMPLE content only.
A searchable PDF utility bill with selectable text: the OCR ground-truth twin of the scanned JPEG. Fictional SAMPLE content for measuring OCR accuracy.
Exact ground-truth string for the dotted-code OCR hard case.
Exact ground-truth string for the dotted-serial OCR hard case.
Exact ground-truth string for the low-contrast OCR hard case.
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