GLB files are text files that record what textures, images, and other files are used in a globe, as well as where those files are stored. The GLB formats are optimized for download speed and load time at runtime, which makes them easier to use in mobile- and web-based 3D modeling programs. Apart from this, the glTF is developed to be an efficient, extensible, interoperable format for the transmission and loading of 3D content.