diff --git a/content/_index.md b/content/_index.md
index e078ba5..66b2387 100644
--- a/content/_index.md
+++ b/content/_index.md
@@ -3,4 +3,4 @@ title: "Ignorance is bliss…"
 description: "Welcome to Christoph Cullmann’s web site"
 ---
 
-<center><img class="rounded-md" width=800 src="/images/crkbd.jpg"></center>
+<center><img class="rounded-md" width=800 src="/images/crkbd.webp"></center>
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diff --git a/static/images/crkbd.webp b/static/images/crkbd.webp
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diff --git a/static/images/ferris.png b/static/images/ferris.png
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