diff --git a/layouts/_default/baseof.html b/layouts/_default/baseof.html
index f4c264b..050e928 100644
--- a/layouts/_default/baseof.html
+++ b/layouts/_default/baseof.html
@@ -10,6 +10,20 @@
 
         {{ $style := resources.Get "sass/main.scss" | resources.ToCSS }}
         <link rel="stylesheet" href="{{ $style.RelPermalink }}" />
+        <!-- Matomo tracking. No information goes to third parties. -->
+        <script type="text/javascript">
+            var _paq = window._paq = window._paq || [];
+            /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+            _paq.push(['trackPageView']);
+            _paq.push(['enableLinkTracking']);
+            (function() {
+                var u="//t.apps.mzhang.io/";
+                _paq.push(['setTrackerUrl', u+'matomo.php']);
+                _paq.push(['setSiteId', '1']);
+                var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+                g.type='text/javascript'; g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+            })();
+        </script>
     </head>
 
     <body>
