To convert GLTF 3D models for clients, confirm their required output format (e.g., FBX, USDZ, OBJ) then use a tool like Blender, Khronos glTF Transform, or Convertio to process the file, and test it in their target software to ensure compatibility.
Focus on preserving client-critical elements—textures, animations, geometry—since formats differ in handling these (e.g., USDZ works for AR, FBX for game engines).
Test the converted model in their target software (e.g., Unity) to fix issues like missing textures before delivery.