diff --git a/packages/backend/src/server/web/views/base-embed.pug b/packages/backend/src/server/web/views/base-embed.pug
index 2bab20a36..baa090967 100644
--- a/packages/backend/src/server/web/views/base-embed.pug
+++ b/packages/backend/src/server/web/views/base-embed.pug
@@ -13,6 +13,8 @@ html(class='embed')
 		meta(name='referrer' content='origin')
 		meta(name='theme-color' content= themeColor || '#86b300')
 		meta(name='theme-color-orig' content= themeColor || '#86b300')
+		meta(property='og:site_name' content= instanceName || 'Misskey')
+		meta(property='instance_url' content= instanceUrl)
 		meta(name='viewport' content='width=device-width, initial-scale=1')
 		meta(name='format-detection' content='telephone=no,date=no,address=no,email=no,url=no')
 		link(rel='icon' href= icon || '/favicon.ico')