Convert3D vs FBX-glTF-conv

Convert3D converts 3D models between file formats, including FBX, OBJ, USDZ, and STEP; its website lists more than 1,000 possible conversions. The browser converter uses WebAssembly for local processing and says files do not leave the computer, though some files may be processed on Convert3D or partner servers, and API processing is server-side. Users can preview models in 3D and rotate, zoom, and pan before exporting. The browser viewer can display scene hierarchy, node properties, material details, wireframe view, and material maps. A compressor offers low, medium, and high presets, with optional geometry, quantization, and texture settings, and advertises compression up to 80%. Desktop apps are available for Mac, Windows, and Linux. Developers can use the REST API for batch conversion in applications, pipelines, and automation workflows. API models are encrypted in transit and at rest and automatically deleted after processing. The Free API plan costs nothing for 10 conversions. Paid plans cost $899 a year, $1,799 a year, or $4,899 a year.

FBX-glTF-conv is a free command-line utility for converting FBX files to glTF, with an output path ending in .gltf or .glb. The project describes it as a component used with Cocos Creator and as an alternative to FBX2glTF for that purpose. Its listed conversion support includes meshes, scene hierarchy, skinning, blend shapes or morph targets, and skeletal node transform and blend shape animations. Supported materials include Lambert and Phong. Textures can use JPEG or PNG images, with options to resolve textures and control image paths. The project lists Windows, macOS, and Linux, and reports testing on Windows, macOS 10.13 or later, and Ubuntu 22.04; Ubuntu 20.04 is unsupported. Additive cluster mode, FBX-specific node inherit types, cameras, and lights are marked unfinished. Building requires Windows or macOS, FBX SDK 2019 or higher, vcpkg, and CMake. The software is under the MIT License, which includes an as-is warranty disclaimer. The repository links to releases and directs users to file an issue for build problems.