# ufbx/ufbx

Single source file FBX loader

Repository: https://github.com/ufbx/ufbx
Canonical: https://ross.abutalabs.com/products/ufbx
Language: C
License: NOASSERTION
License Family: other
Topics: fbx, single-source, c, cpp
Last push: 2026-08-23T23:59:27+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 2643, "days_push": 10, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1375, forks 97 (observed 2026-08-28T04:04:33.140602+00:00)

## What it is
ufbx is a single source file FBX file loader written in portable C (also compilable as C++). It parses binary and ASCII FBX files into plain data structures, supporting meshes, skinning, blend shapes, lights, cameras, NURBS, and more, plus Wavefront .obj files.

## Use cases
- load fbx 3d models in c or c++ without the official fbx sdk
- parse fbx files into plain data structures
- import meshes and skinning data from fbx files
- load embedded textures and materials from fbx scenes
- evaluate animation curves and cpu skinning from fbx files
- load wavefront obj files with the same api
- sanitize untrusted fbx files safely

## When to choose
- you need FBX loading without the heavy official FBX SDK dependency
- you want a single-file, dependency-free C/C++ library that's easy to vendor
- safety matters: malformed files and OOM are handled gracefully
- you need broad platform support including WASI/embedded targets

## When to avoid
- you need a full scene graph or editing features rather than just loading
- you require formats beyond FBX and OBJ
- you need a high-level runtime with rendering built in

## Facets
- artifact type: library
- maturity: active
- function: parser, graphics, file-system
- domain: graphics, files, parsers
- platform: cross-platform, cpp, c, wasm
- tags: fbx, single-source-file, 3d-model-loading, obj-loader, no-dependencies, game-development

## Member repositories
- ufbx/ufbx (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:33.140602+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:40:35.578881+00:00, confidence not recorded.
  - readme: https://github.com/ufbx/ufbx (fetched 2026-08-28T04:04:33.140602+00:00, sha 006f7746c492)
- Data as of 2026-08-30T08:39:29.467469+00:00.