diff --git a/docs/.vuepress/public/images/demos/pengzhanbo.jpg b/docs/.vuepress/public/images/demos/pengzhanbo.jpg
deleted file mode 100644
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diff --git a/docs/.vuepress/public/images/demos/pengzhanbo.webp b/docs/.vuepress/public/images/demos/pengzhanbo.webp
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diff --git a/docs/demos.md b/docs/demos.md
index 55a0d4b9..328f60e3 100644
--- a/docs/demos.md
+++ b/docs/demos.md
@@ -88,7 +88,7 @@ blog:
     logo: https://pengzhanbo.cn/images/blogger-fav.png
     url: https://pengzhanbo.cn/
     repo: https://github.com/pengzhanbo/pengzhanbo.cn
-    preview: /images/demos/pengzhanbo.jpg
+    preview: /images/demos/pengzhanbo.webp
   -
     name: 二猫子
     desc: 老老实实的二猫子，从不胡说八道