GLTF, or Graphics Language Transmission Format, is a file format designed for transmitting 3D models and scenes. It is widely used in web applications and virtual reality because it allows for efficient loading and rendering of 3D content. GLTF files can include textures, materials, and animations, making them versatile for various applications. The format is based on JSON, which makes it easy to read and write. GLTF supports both binary and text representations, allowing developers to choose the best option for their needs. Its compatibility with modern graphics engines, like WebGL and Unity, enhances its popularity in the 3D graphics community.