diff --git a/src/app.html b/src/app.html
index 1cafa81..6ae0339 100644
--- a/src/app.html
+++ b/src/app.html
@@ -26,11 +26,10 @@
           },
         ],
       };
-      let blob = new Blob([JSON.stringify(manifest)], {
-        type: "application/manifest+json",
-      });
       let content = URL.createObjectURL(
-        new File([blob], "manifest.webmanifest")
+        new File([JSON.stringify(manifest)], "manifest.webmanifest", {
+          type: "application/manifest+json",
+        })
       );
       let element = document.createElement("link");
       element.setAttribute("rel", "manifest");