diff --git a/index.html b/index.html
index 3659f64..f00ec57 100644
--- a/index.html
+++ b/index.html
@@ -18,11 +18,11 @@
     <meta property="og:title" content="NES.css" />
     <meta property="og:url" content="https://bcrikko.github.io/NES.css/" />
     <meta property="og:description" content="NES-style CSS" />
-    <meta property="og:image" content="" />
+    <meta property="og:image" content="https://user-images.githubusercontent.com/5305599/49061716-da649680-f254-11e8-9a89-d95a7407ec6a.png" />
     <meta name="twitter:card" content="summary_large_image" />
     <meta name="twitter:site" content="@bc_rikko" />
     <meta name="twitter:creator" content="@bc_rikko" />
-    <meta name="twitter:image" content="https://user-images.githubusercontent.com/5305599/45937791-a5db2100-bffe-11e8-8bfd-fc3f534b28aa.gif" />
+    <meta name="twitter:image" content="https://user-images.githubusercontent.com/5305599/49061716-da649680-f254-11e8-9a89-d95a7407ec6a.png" />
 
     <script async src="https://www.googletagmanager.com/gtag/js?id=UA-41640153-4"></script>
     <script>window.dataLayer=window.dataLayer||[];function gtag(){dataLayer.push(arguments);}gtag("js", new Date());gtag("config", "UA-41640153-4");</script>