diff --git a/assets/js/index.js b/assets/js/index.js
index c10a58b..da99b54 100644
--- a/assets/js/index.js
+++ b/assets/js/index.js
@@ -104,7 +104,11 @@ Source:
         id: {{ $index }},
         href: "{{ .RelPermalink }}",
         title: {{ .Title | jsonify }},
-        description: {{ .Params.description | jsonify }},
+        {{ with .Description -}}
+          description: {{ . | jsonify }},
+        {{ else -}}
+          description: {{ .Summary | plainify | jsonify }},
+        {{ end -}}
         content: {{ .Content | jsonify }}
       })
       {{ if ne (add $index 1) $len -}}
diff --git a/layouts/partials/head/seo.html b/layouts/partials/head/seo.html
index 29aaef3..ac31d72 100644
--- a/layouts/partials/head/seo.html
+++ b/layouts/partials/head/seo.html
@@ -19,7 +19,11 @@
 {{ with .Description -}}
   <meta name="description" content="{{ . }}">
 {{ else -}}
-  <meta name="description" content="{{ .Site.Params.description }}">
+  {{ with .Summary | plainify -}}
+    <meta name="description" content="{{ . }}">
+  {{ else -}}
+    <meta name="description" content="{{ .Site.Params.description }}">
+  {{ end -}}
 {{ end -}}
 
 {{ if $.Scratch.Get "paginator" }}