Side by side
FBX2glTF vs Open Asset Import Library (Assimp)
Both stand on 3d file converter software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxMacWindows
FBX2glTF offers multiple output forms, animation conversion and material handling in a free command-line package. Check the SDK restriction and potential animation file size against your workflow.
Visit FBX2glTF Free plan AndroidiPhoneLinux+3
Choose Assimp when a project needs a library to load 3D assets across many formats and perform mesh processing. Developers seeking prebuilt binaries should check that the Visual Studio 2026, 64-bit package matches their setup.
Visit Open Asset Import Library (Assimp)The facts
| FBX2glTF | Open Asset Import Library (Assimp) | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Mac, Windows | Android, iPhone, Linux, Mac, Self-hosted, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 2 |
| Maker | Not published | Not published |
| Website | github.com | assimp.org |
| On 3d file converter software | #6 of 31 | #10 of 31 |
FBX2glTF: what it does well
- Precompiled binaries for Windows, Mac OS X and Linux.
- Can output glTF or binary .glb.
- Supports baked animation and blend shapes.
- Transfers emissive, occlusion and normal map data.
- Free under a 3-clause BSD license.
What to know first
- Build system supports FBX SDK 2019.2 only.
- Baked animation can create very large files.
- Draco output requires compatible viewer support.
- Initial v0.9.0 release was marked beta.
Open Asset Import Library (Assimp): what it does well
- Imports more than 40 3D file formats.
- Provides mesh cleanup and optimization operations.
- Offers C and C++ APIs plus language bindings.
- Listed for Windows, macOS, Linux, iOS, and Android.
- Static linking is permitted with the license text included.
What to know first
- The prebuilt package is scoped to 64-bit Visual Studio 2026.
- Static linking requires including the license text with the product.
Alternatives to FBX2glTF Alternatives to Open Asset Import Library (Assimp) The whole list