diff --git a/layout/_layout.njk b/layout/_layout.njk
index 8a9bd73..6b225da 100644
--- a/layout/_layout.njk
+++ b/layout/_layout.njk
@@ -5,6 +5,11 @@
   {%- include '_partials/head/head-unique.njk' -%}
   <title>{% block title %}{% endblock %}</title>
   {{ partial('_third-party/analytics/index.njk', {}, {cache: theme.cache.enable}) }}
+  {{ partial('_scripts/index.njk', {}, {cache: theme.cache.enable}) }}
+  {{ partial('_third-party/index.njk', {}, {cache: theme.cache.enable}) }}
+  {{ partial('_third-party/statistics/index.njk', {}, {cache: theme.cache.enable}) }}
+  {%- include '_third-party/math/index.njk' -%}
+  {%- include '_third-party/quicklink.njk' -%}
   {{- next_inject('head') }}
   <noscript>
     <link rel="stylesheet" href="{{ url_for(theme.css) }}/noscript.css">
@@ -40,13 +45,6 @@
 
   {{ partial('_partials/widgets.njk', {}, {cache: theme.cache.enable}) }}
 
-  {{ partial('_scripts/index.njk', {}, {cache: theme.cache.enable}) }}
-  {{ partial('_third-party/index.njk', {}, {cache: theme.cache.enable}) }}
-  {{ partial('_third-party/statistics/index.njk', {}, {cache: theme.cache.enable}) }}
-
-  {%- include '_third-party/math/index.njk' -%}
-  {%- include '_third-party/quicklink.njk' -%}
-
   {{- next_inject('bodyEnd') }}
 </body>
 </html>
diff --git a/layout/_scripts/vendors.njk b/layout/_scripts/vendors.njk
index 0790100..ed5e147 100644
--- a/layout/_scripts/vendors.njk
+++ b/layout/_scripts/vendors.njk
@@ -1,5 +1,5 @@
 {%- if theme.canvas_ribbon.enable %}
-  <script size="{{ theme.canvas_ribbon.size }}" alpha="{{ theme.canvas_ribbon.alpha }}" zIndex="{{ theme.canvas_ribbon.zIndex }}" src="{{ theme.vendors.canvas_ribbon.url }}"></script>
+  <script size="{{ theme.canvas_ribbon.size }}" alpha="{{ theme.canvas_ribbon.alpha }}" zIndex="{{ theme.canvas_ribbon.zIndex }}" src="{{ theme.vendors.canvas_ribbon.url }}" defer></script>
 {%- endif %}
 
 {%- for name in js_vendors() %}
diff --git a/scripts/helpers/engine.js b/scripts/helpers/engine.js
index 949bdcf..6b2f703 100644
--- a/scripts/helpers/engine.js
+++ b/scripts/helpers/engine.js
@@ -32,7 +32,7 @@ hexo.extend.helper.register('next_js', function(file, {
     custom  : custom_cdn_url
   });
   const src = links[internal] || links.local;
-  return `<script ${pjax ? 'data-pjax ' : ''}${module ? 'type="module" ' : ''}src="${src}"></script>`;
+  return `<script ${pjax ? 'data-pjax ' : ''}${module ? 'type="module" ' : ''}src="${src}" defer></script>`;
 });
 
 hexo.extend.helper.register('next_vendors', function(name) {
@@ -42,8 +42,8 @@ hexo.extend.helper.register('next_vendors', function(name) {
     if (integrity) return `<link rel="stylesheet" href="${url}" integrity="${integrity}" crossorigin="anonymous">`;
     return `<link rel="stylesheet" href="${url}">`;
   }
-  if (integrity) return `<script src="${url}" integrity="${integrity}" crossorigin="anonymous"></script>`;
-  return `<script src="${url}"></script>`;
+  if (integrity) return `<script src="${url}" integrity="${integrity}" crossorigin="anonymous" defer></script>`;
+  return `<script src="${url}" defer></script>`;
 });
 
 hexo.extend.helper.register('next_data', function(name, ...data) {