diff --git a/img/sigma ndj.webp b/img/sigma ndj.webp
new file mode 100644
index 00000000..e601b5aa
Binary files /dev/null and b/img/sigma ndj.webp differ
diff --git a/style.css b/style.css
index 03cce316..91d80ecb 100644
--- a/style.css
+++ b/style.css
@@ -109,7 +109,7 @@ br {
 .header {
   position: relative;
   z-index: 5;
-  background: url("img/sigma ndj.png");
+  background: url("img/sigma ndj.webp");
   background-position: center center;
   background-size: cover;
 }