diff --git a/src/components/DownloadButtonAndMenu.tsx b/src/components/DownloadButtonAndMenu.tsx
index d25683da..e7800833 100644
--- a/src/components/DownloadButtonAndMenu.tsx
+++ b/src/components/DownloadButtonAndMenu.tsx
@@ -86,7 +86,7 @@ export function DownloadButtonAndMenu({
             <Download className="mr-1 h-3 w-3" />
             <span className="flex-grow  mr-6">3D Model</span>
             <span className="text-[0.6rem] bg-green-500 opacity-80 text-white font-mono rounded-md px-1 text-center py-0.5 mr-1">
-              gltf
+              glb
             </span>
           </DropdownMenuItem>
           <DropdownMenuItem
diff --git a/src/lib/download-fns/download-gltf.ts b/src/lib/download-fns/download-gltf.ts
index b8abb15b..67229a17 100644
--- a/src/lib/download-fns/download-gltf.ts
+++ b/src/lib/download-fns/download-gltf.ts
@@ -45,5 +45,6 @@ export const downloadGltf = async (
 
   const gltfBlob = await gltfPromise
 
-  saveAs(gltfBlob, fileName + ".gltf")
+  const extension = options.binary ? ".glb" : ".gltf"
+  saveAs(gltfBlob, fileName + extension)
 }