diff --git a/adventskalender/2025/content/day01.html b/adventskalender/2025/content/day01.html
new file mode 100644
index 0000000..e964bbd
--- /dev/null
+++ b/adventskalender/2025/content/day01.html
@@ -0,0 +1,96 @@
+
\ No newline at end of file
diff --git a/adventskalender/2025/js/background.js b/adventskalender/2025/js/background.js
index ea40a72..68dc1a8 100644
--- a/adventskalender/2025/js/background.js
+++ b/adventskalender/2025/js/background.js
@@ -66,10 +66,10 @@
// === ![]()
(JPEG-Fallback) ===
const jpegSrcset = breakpoints
- .map(bp => `${basePath}${bp}/jpeg/${filename}.jpg ${bp}w`)
+ .map(bp => `${basePath}${bp}/jpeg/${filename}.jpeg ${bp}w`)
.join(", ");
- img.setAttribute("src", `${basePath}1920/jpeg/${filename}.jpg`);
+ img.setAttribute("src", `${basePath}1920/jpeg/${filename}.jpeg`);
img.setAttribute("srcset", jpegSrcset);
img.setAttribute("sizes", "100vw");
+