diff --git a/images/thumbnail.png b/images/thumbnail.png
new file mode 100644
index 0000000..1020bf8
Binary files /dev/null and b/images/thumbnail.png differ
diff --git a/index.html b/index.html
index 555f3f5..3bee13d 100644
--- a/index.html
+++ b/index.html
@@ -12,6 +12,16 @@
     />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
 
+    <!-- Open Graph Tags -->
+    <meta property="og:type" content="website" />
+    <meta property="og:site_name" content="달레 스터디" />
+    <meta property="og:title" content="달레 스터디" />
+    <meta property="og:description" content="해외취업을 위한 커뮤니티 기반 알고리즘 스터디" />
+    <meta property="og:url" content="https://www.dalestudy.com/" />
+    <meta property="og:image" content="https://www.dalestudy.com/images/thumbnail.png" />
+    <meta property="og:image:alt" content="달레 스터디 홈페이지 썸네일" />
+    <!-- End Open Graph Tags -->
+
     <!-- Google Tag Manager -->
     <script>
       (function (w, d, s, l, i) {