Home : File Types : GLTF File

.GLTF File Extension

File TypeGL Transmission Format File

DeveloperThe Khronos Group
3.9 (11 Votes)
Category3D Image Files

What is a GLTF file?

A GLTF file contains a 3D model saved in the GL Transmission Format (glTF). It stores a full scene description in JSON format, which includes node hierarchy, cameras, and materials. GLTF files also contain descriptor information about animations and meshes.

More Information

GLTF files can be used to save and share digital assets between different 3D modeling tools, similarly to .DAE files. However, they are also optimized for download speed and load time at runtime, which makes them easier to use in mobile- and web- based 3D modeling programs. They are also a more streamlined format for uploading and downloading from online digital asset databases, such as Remix 3D.

GLTF files may include embedded resources or may reference external resources. If a GLTF file comes with separate resources, they most likely will be the following files:

  • Binary (.BIN) files - One or more BIN files that contain animation, geometry, and other data.
  • Shader (GLSL) files - One or more GLSL files that contain shaders.
  • Image (.JPG, .PNG, etc.) files - One or more files that contain textures for the 3D model.

The glTF is developed to be an efficient, extensible, interoperable format for the transmission and loading of 3D content. The goals of the format include, compact file sizes, fast loading, complete 3D scene representation, runtime independence, and extensibility to accompany further development. For more information about glTF, click here.

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Programs that open GLTF files

Updated 2/4/2019

About GLTF Files

Our goal is to help you understand what a file with a *.gltf suffix is and how to open it.

The GL Transmission Format file type, file format description, and Mac, Windows, and Linux programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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