diff --git a/static/js/display.js b/static/js/display.js
index 756e33f..02f5ed7 100644
--- a/static/js/display.js
+++ b/static/js/display.js
@@ -90,6 +90,6 @@ async function getRegistration(name){
 const args = new URLSearchParams(location.search);
 init(
     args.get("name"),
-    parseInt(args.get("width")),
-    parseInt(args.get("height"))
+    parseInt(args.get("width") || window.innerWidth),
+    parseInt(args.get("height") || window.innerHeight)
 )
\ No newline at end of file