diff --git a/layout/includes/head/analytics.pug b/layout/includes/head/analytics.pug
index e6aa621..7412c41 100644
--- a/layout/includes/head/analytics.pug
+++ b/layout/includes/head/analytics.pug
@@ -31,4 +31,12 @@ if theme.microsoft_clarity
         c[a]=c[a]||function(){(c[a].q=c[a].q||[]).push(arguments)};
         t=l.createElement(r);t.async=1;t.src="https://www.clarity.ms/tag/"+i;
         y=l.getElementsByTagName(r)[0];y.parentNode.insertBefore(t,y);
-    })(window, document, "clarity", "script", "!{theme.microsoft_clarity}");
\ No newline at end of file
+    })(window, document, "clarity", "script", "!{theme.microsoft_clarity}");
+
+if (theme.google_tag_manager && theme.google_tag_manager.tag_id)
+  script.
+    (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+    "!{theme.google_tag_manager.domain ? theme.google_tag_manager.domain : 'https://www.googletagmanager.com'}/gtm.js?id="+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','!{theme.google_tag_manager.tag_id}');    
diff --git a/layout/includes/layout.pug b/layout/includes/layout.pug
index ef6a46b..e8f6979 100644
--- a/layout/includes/layout.pug
+++ b/layout/includes/layout.pug
@@ -10,6 +10,10 @@ html(lang=config.language data-theme=theme.display_mode class=htmlClassHideAside
   head
     include ./head.pug
   body
+    if (theme.google_tag_manager && theme.google_tag_manager.tag_id)
+      noscript
+        iframe(src=`${theme.google_tag_manager.domain ? theme.google_tag_manager.domain : 'https://www.googletagmanager.com'}/ns.html?id=${theme.google_tag_manager.tag_id}` height="0" width="0" style="display:none;visibility:hidden")
+
     !=partial('includes/loading/index', {}, {cache: true})
 
     if theme.background