diff --git a/core/basepage.php b/core/basepage.php
index bd41e826..f151e2f9 100644
--- a/core/basepage.php
+++ b/core/basepage.php
@@ -380,6 +380,9 @@ class BasePage
         $css_cache_file = $this->get_css_cache_file($theme_name, $config_latest);
         $this->add_html_header("<link rel='stylesheet' href='$data_href/$css_cache_file' type='text/css'>", 43);
 
+        $initjs_cache_file = $this->get_initjs_cache_file($theme_name, $config_latest);
+        $this->add_html_header("<script src='$data_href/$initjs_cache_file' type='text/javascript'></script>", 44);
+
         $js_cache_file = $this->get_js_cache_file($theme_name, $config_latest);
         $this->add_html_header("<script defer src='$data_href/$js_cache_file' type='text/javascript'></script>", 44);
     }
@@ -407,6 +410,29 @@ class BasePage
         return $css_cache_file;
     }
 
+    private function get_initjs_cache_file(string $theme_name, int $config_latest): string
+    {
+        $js_latest = $config_latest;
+        $js_files = array_merge(
+            zglob("ext/{" . Extension::get_enabled_extensions_as_string() . "}/init.js"),
+            zglob("themes/$theme_name/init.js")
+        );
+        foreach ($js_files as $js) {
+            $js_latest = max($js_latest, filemtime($js));
+        }
+        $js_md5 = md5(serialize($js_files));
+        $js_cache_file = data_path("cache/initscript/{$theme_name}.{$js_latest}.{$js_md5}.js");
+        if (!file_exists($js_cache_file)) {
+            $mcss = new \MicroBundler\MicroBundler();
+            foreach($js_files as $js) {
+                $mcss->addSource($js, file_get_contents($js));
+            }
+            $mcss->save($js_cache_file);
+        }
+
+        return $js_cache_file;
+    }
+
     private function get_js_cache_file(string $theme_name, int $config_latest): string
     {
         $js_latest = $config_latest;
@@ -435,7 +461,6 @@ class BasePage
         return $js_cache_file;
     }
 
-
     /**
      * @return array A list of stylesheets relative to the theme root.
      */
diff --git a/ext/static_files/init.js b/ext/static_files/init.js
new file mode 100644
index 00000000..d45f34e3
--- /dev/null
+++ b/ext/static_files/init.js
@@ -0,0 +1,6 @@
+function shm_cookie_set(name, value) {
+	Cookies.set(name, value, {expires: 365, samesite: "lax", path: "/"});
+}
+function shm_cookie_get(name) {
+	return Cookies.get(name);
+}
diff --git a/ext/static_files/script.js b/ext/static_files/script.js
index 61eb16b3..889e1483 100644
--- a/ext/static_files/script.js
+++ b/ext/static_files/script.js
@@ -1,12 +1,3 @@
-/*jshint bitwise:false, curly:true, eqeqeq:true, evil:true, forin:false, noarg:true, noempty:true, nonew:true, undef:false, strict:false, browser:true */
-
-function shm_cookie_set(name, value) {
-	Cookies.set(name, value, {expires: 365, samesite: "lax", path: "/"});
-}
-function shm_cookie_get(name) {
-	return Cookies.get(name);
-}
-
 document.addEventListener('DOMContentLoaded', () => {
 	/** Load jQuery extensions **/
 	//Code via: https://stackoverflow.com/a/13106698