diff --git a/docs/index.html b/docs/index.html
index 86f64c6..4314e9e 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -5,6 +5,17 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>iso·gloss</title>
     <link rel="stylesheet" href="style.css">
+
+    <meta property="og:title" content="iso·gloss">
+    <meta property="og:description" content="Software for looking up languages by ISO 639 codes">
+    <meta property="og:image" content="https://github.com/thunderpoot/isogloss/blob/main/isogloss.webp">
+    <meta property="og:url" content="https://thunderpoot.github.io/isogloss">
+    <meta property="og:type" content="website">
+
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:title" content="iso·gloss">
+    <meta name="twitter:description" content="Software for looking up languages by ISO 639 codes">
+    <meta name="twitter:image" content="https://github.com/thunderpoot/isogloss/blob/main/isogloss.webp">
 </head>
 <body>
     <div class="container">
