diff --git a/adventskalender/2025/index.html b/adventskalender/2025/index.html
index d4c86d0..f2a824a 100644
--- a/adventskalender/2025/index.html
+++ b/adventskalender/2025/index.html
@@ -6,6 +6,7 @@
   <title>Bratonien Adventskalender 2025</title>
 
   <!-- === Styles === -->
+  <link rel="preload" as="image" href="assets/images/Basisbild.webp">
   <link rel="stylesheet" href="../shared/css/style.css">
   <link rel="stylesheet" href="css/main.css">
   <link rel="stylesheet" href="css/popup.css">