khronosgroup/gltf-asset-auditor

The glTF Asset Auditor is a tool that checks 3D model files for quality and compliance with a set of standards. It is designed for teams that use 3D models in e-commerce or product visualization applications. Instead of manually inspecting each model to make sure it meets your requirements, you run it through this tool and get a pass/fail report on a wide range of checks. You configure a JSON file that specifies which checks to run and what the passing values are. For example, you can set limits on file size, triangle count, texture resolution, material count, and more. If you omit a value, the tool falls back to defaults based on the Khronos 3D Commerce Asset Creation Guidelines. You can also turn off any check you do not need. The tool then reads your glTF file, runs the selected checks, and reports whether each one passed, failed, or was not tested. The main audience is teams managing 3D assets for online product catalogs or configurators. For instance, if a retailer sells furniture online and accepts 3D models from multiple suppliers, they need those models to load quickly, render well, and have consistent quality. This tool lets them enforce standards like maximum file size, texture dimensions, and proper UV mapping before a model ever reaches the customer-facing application. The Khronos Group, which maintains the glTF format itself, developed this as part of their 3D Commerce initiative. One notable tradeoff is performance. Some checks, like beveled edges, non-manifold edges, UV overlaps, and UV gutter width, require the tool to compute shared edges or UV relationships by comparing every vertex's position. The glTF format stores geometry as individual triangles without shared vertices, so the tool has to reconstruct those connections on the fly. For models with many triangles, these specific checks can take over a minute, while simpler checks typically finish in under five seconds. You can skip the slow checks if they are not relevant to your use case.