diff --git a/web/index.html b/web/index.html
index 8942922d..a5e74bab 100644
--- a/web/index.html
+++ b/web/index.html
@@ -26,9 +26,13 @@
     <meta property="og:site_name" content="Biscuits" />
 
     <meta name="twitter:card" content="summary_large_image" />
-    <meta name="twitter:image:alt" content="" />
+    <meta
+      name="twitter:image:alt"
+      content="An image of a phone with a groceries app. A title says 'Biscuits' and a subtitle says 'Scratch-made apps.'"
+    />
     <meta name="twitter:title" content="Biscuits" />
-    <meta name="twitter:description" content="Scratch-made apps" />
+    <meta name="twitter:description" content="Scratch-made local-first apps" />
+    <meta name="twitter:image" content="/og-image.png" />
     <meta name="apple-mobile-web-app-capable" content="yes" />
 
     <link rel="preconnect" href="https://fonts.googleapis.com" />