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Convert Your 3D Mesh/Model GLB Files to FBX

Our free and fast tool will convert your 3D GLB (Graphics Language Transmission Format) model files to a standard FBX (Autodesk Filmbox) file that can then be edited further in most popular 3D editing packages or 3D printed without any further processing. Our conversion tool can also batch convert multiple GLB files; up to 200 files at a time can be converted.

To convert your GLB file, click the Upload button above and select the file to convert. Once selected, the file will be converted to a FBX file and will be ready for download shortly afterwards. For more information about the GLB to FBX conversion process, see the conversion information section below.

How to Convert your GLB to FBX Online?

Here are two simple steps to convert your GLB to FBX.

Upload a GLB File

Click the "Upload a GLB File" button and select a GLB to upload. The maximum file size is 100MB.

Download your FBX File

Click the download link once completed to receive your FBX file.

A Comparison of GLB and FBX File Formats

Here we will look at both the FBX and GLB file formats and compare their features to try to work out what format is best to use for a specific situation. If you are not familiar with 3D modeling and the terminology behind it, we recommend this great article that explains 3D modeling concepts and the terminology that goes with it.

Structure

When looking at both file formats and comparing the features, there is not much to split these two formats. Both FBX and GLB support all the usual 3D elements: vertices, faces, materials, textures, and animations.

How each format stores these internally is obviously different, with the FBX format using proprietary binary and text formats and GLB using a more open format based on JSON, which is used to describe the element structure and binary to efficiently store the raw geometry data.

Supported Material

Both FBX and GLB files support model materials, whether they be plain color materials or textured materials; both types are supported. Both formats support textures, which can be either embedded within the file or linked to as external files. When linking textures to either an FBX or GLB file, it is important to include these when using any of our converters to ensure a full and accurate conversion.

Both formats support ambient, diffuse, and specular colors and textures in addition to bump maps.

The soldier model saved as an GLB file with textures

The soldier model was saved as an GLB file with textures

An animated FBX file

An animated FBX file from mixamo.com

A textured 3D model of Earth

A textured 3D model of Earth

Editing

FBX and GLB enjoy widespread support amongst 3D modeling applications, with the GLB format edging ahead in recent years, mainly due to its open format and feature set.

File Size

When comparing file sizes, there is not much to split the two formats. Both store data in binary format, and both support internal compression techniques to reduce the size of the 3D geometry data. As the majority of the size of a fully textured FBX and GLB is given to the image files, the overall file size is very much dictated by the chosen image format.

Summary

When trying to choose between the two formats, the GLB format comes out on top. It is a modern and evolving 3D format that enjoys more support than the FBX format.

File Format Information for GLB to FBX

ExtensionGLB
Full NameGraphics Language Transmission Format
Type3D Model
Mime Typemodel/gltf-binary
FormatBinary
ToolsGLB Converters, 3D Model Voxelizer, Create GLB Animation, GLB Asset Extractor, Text to GLB, GLB Viewer
Open WithBlender, MeshLab

Description

The GLB file format, which can also have the GLTF file extension depending on whether the content is binary or text/JSON, is a 3D file format used to describe 3D worlds and, as such, contains geometric data such as vertices, faces, normals, animations, and other 3D scene-related data.

The format, described by its creators as the "JPEG of 3D", has gained in popularity and is supported by a wide range of 3D modeling applications such as Blender and MeshLab. The GLB format is an open standard that is maintained by the Khronos Group.

GLB Notes

If your GLB file contains texture files and other texture-related data, these will be included in the conversion process.

Supported Features

  • V2.0 and above files only
  • Mesh geometry
  • Materials
  • Textures

Extensions

  • Draco Compression (KHR_draco_mesh_compression)
  • Mesh Quantization (KHR_mesh_quantization)
  • Specular Glossiness Materials (KHR_materials_pbrSpecularGlossiness)
  • Specular Materials (KHR_materials_specular)
  • IOR Materials (KHR_materials_ior)
  • Meshopt Compression (EXT_meshopt_compression)

Unsupported Features

  • Animations
ExtensionFBX
Full NameAutodesk Filmbox
Type3D Model
Mime Typeapplication/octet-stream
FormatText & Binary
ToolsFBX Converters, 3D Model Voxelizer, Create FBX Animation, FBX Asset Extractor, Text to FBX, FBX Viewer
Open WithBlender, MeshLab

Description

The FBX format by AutoDesk was originally developed by Kaydara in the 1990s as a means to store 2D or 3D content with motion data. It has evolved over the years to become a widely used format by 3D modeling applications such as Blender, 3D Studio Max, and others due to its 3D animation capabilities.

The format is used to contain 3D models, which include vertices, faces, and other 3D geometry along with animation data. The format is proprietary; however, there is a publicly available API to use for development purposes. The file contents can be either text or binary, and work has been carried out by the Blender Foundation to document the format.

FBX Notes

If your original model file contains texture images and other texture-related data, these will be included in the final FBX file.

Supported Features

  • Mesh geometry
  • Materials
  • Textures

Comparing GLB and FBX Features

 

GLB Features

  • Mesh Geometry (Vertices and Faces)
  • Vertex Normals
  • Face Normals
  • Vertex Colors
  • Face Materials (Excluding textures)
  • Textures
  • Point Cloud
  • Multiple Objects Per File
  • Object Transforms (Translation, Rotation, and Scale)
  • Bones/Joints
  • Animations
  • Suitable for 3D Printing

FBX Features

  • Mesh Geometry (Vertices and Faces)
  • Vertex Normals
  • Face Normals
  • Vertex Colors
  • Face Materials (Excluding textures)
  • Textures
  • Point Cloud
  • Multiple Objects Per File
  • Object Transforms (Translation, Rotation, and Scale)
  • Bones/Joints
  • Animations
  • Suitable for 3D Printing

How does it work?

Converting from the GLB file format to FBX can be a complex process, and any tool used for this conversion process needs to be able to handle a variety of data conversion tasks as well as identify any defects within the 3D model and fix them. Here we will explain the conversion process used by our tool to accurately convert your GLB file to a valid FBX 3D model. Let's start with the conversion process, which involves the following steps:

Step 1: Read the Source GLB File

In its simplest form, an GLB file is a binary data file containing 3D data such as vertices, faces, normals, and more. When combined, these make up the 3D model you see on your screen.

When our tool reads this 3D data, all we are interested in are the vertices, faces, normals, materials, and textures, as this is the only data that can be accurately converted into the final FBX file.

The GLB file can contain data such as material definitions and textures that describe how a particular set of 3D geometry should be rendered. As we are creating an FBX file, which supports both materials and textures, our tool will attempt to load any materials and textures present in the GLB file.

For more information regarding the GLB file format, please see this great article that goes into a lot of detail explaining the GLB format.

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Step 2: Process File Data

With the GLB file data read, our tool generates an internal representation of the full 3D model and will attempt to fix any geometry issues encountered. Along with repairing any issues with the 3D model, the tool will remove any duplicated vertices and prepare the model for exporting to the FBX format.

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Step 3: Saving to the FBX Format

With the conversion process entering its final stages, our tool now needs to take the in-memory 3D model we have created in step 2 and convert it to the FBX format.

The completed FBX file will contain any textures that were present in the original GLB file, these will be embedded within the FBX file. Depending on the original texture format, these textures will be saved in either PNG or JPG format. If the original format was neither of these, for example, if your model contained a texture in the TGA format, it will be converted to a PNG.

Frequently Asked Questions

How does ImageToStl.com differ from other GLB file conversion websites?

Many 3D file conversion websites use the same off-the-shelf components to convert files, these often lack features and full GLB file compatibility. Our bespoke file conversion tools offer full GLB file compatibility and have been developed in-house by a team of developers, some of whom have over 30 years of experience working with 3D graphics file formats, meaning our tools will convert your GLB file quickly and accurately with maximum compatibility.

I have several GLB files; can I batch convert my GLB to FBX?

Yes! Our GLB tool supports full batch conversions. You can upload up to 200 GLB files at a time. Our tool will convert them all as quickly as possible. Once completed, you can either download the FBX files individually or download them all in a single ZIP file.

How can I convert my GLB file to FBX?

First click the "Upload..." button, and select your GLB file to upload. You can also drag and drop your file onto the tool. Once your file is selected, you can set any configuration options. When the GLB to FBX conversion has completed, you can download your FBX file straight away.

How long does it take to convert my GLB to FBX?

We aim to process all GLB to FBX conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.

How accurate is the GLB to FBX conversion?

We aim to create the most accurate conversions with our tools. Our tools are under constant development with new features and improvements being added every week.

Is it safe to convert my GLB to FBX on ImageToStl.com?

Yes, of course! We do not store the GLB file you submit to us. The resulting FBX file, once created, is stored for 4 hours after upload; after this time it is deleted, and the short-term download link will stop working. You can create a long-term download Url with most tools that will ensure the file is retained for 24 hours, allowing you to download the file when convenient. Our tools also come with a Delete button, allowing you to delete the file immediately.

Do I need a high-spec. computer to use the GLB to FBX converter?

No. All our conversion tools process your GLB file on our dedicated conversion servers, meaning you can use our tools on low-spec computers, laptops, tablets, and mobile devices and receive your converted FBX file quickly.

Can I convert my GLB to FBX on Windows, Linux, Android, iOS or Mac OS?

Yes! Our GLB to FBX tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.

What if I am using an Ad Blocker, will that affect things?

Yes. Although you can use an Ad Blocker, if you like our GLB conversion tool please consider white-listing our website. When an Ad Blocker is enabled there are some conversion limits and some settings may not be available when using our tools. Processing/conversion and download times will also be longer.

Can I get support with converting my GLB to FBX?

Yes. When you have converted your GLB to FBX, there is a "Feedback" option that you can use to let us know of any issues you encountered when converting your file.

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