diff --git a/background.jpg b/background.jpg
new file mode 100644
index 0000000..7cc828d
Binary files /dev/null and b/background.jpg differ
diff --git a/background.png b/background.png
deleted file mode 100644
index febf2f6..0000000
Binary files a/background.png and /dev/null differ
diff --git a/header.html b/header.html
index 005c94f..0e90112 100644
--- a/header.html
+++ b/header.html
@@ -11,7 +11,7 @@
     font-display:swap;
 }
 body,html {
-    background: #222 url(/fancyindex/background.png) center/cover fixed;
+    background: #222 url(/fancyindex/background.jpg) center/cover fixed;
     color:white;
     font:16px 'JetBrains Mono',monospace;
 }