What you get
The download is a single .glb (binary glTF 2.0) containing cube meshes, a node hierarchy and an embedded PNG atlas. Geometry is scaled from Blockbench units to meters (16 units = 1 meter). This is useful for 3D preview and downstream tools, not for direct installation as a Minecraft resource pack.
Open and inspect
Open or import the .glb in a tool that supports glTF 2.0/GLB, such as Blender. Check scale, texture appearance, face orientation and hierarchy before using it in another project. The export contains no generated animation tracks or skinned character rig; bone-like groups are scene nodes rather than a guaranteed animation-ready skeleton.
For Blockbench editing, prefer the original .bbmodel. For Minecraft resource-pack files, see the Java and Bedrock guides instead.