diff --git a/assets/js/papermod.js b/assets/js/papermod.js
index a1c990e2..bb2ad2a7 100644
--- a/assets/js/papermod.js
+++ b/assets/js/papermod.js
@@ -104,7 +104,16 @@ function showCodeCopyButtons() {
     });
 }
 
+function openToc() {
+    var toc = document.getElementById("toc");
+
+    if (toc && window.screen.width > 1500 && window.screen.height > 800) {
+        toc.open = true;
+    }
+}
+
 initializeMenu();
+openToc()
 if (params.scrollToTop) scrollToTop();
 if (params.themeToggle) themeToggle();
 if (params.showCodeCopyButtons) showCodeCopyButtons();
\ No newline at end of file
diff --git a/layouts/partials/toc.html b/layouts/partials/toc.html
index 5965bf8b..1b74034b 100644
--- a/layouts/partials/toc.html
+++ b/layouts/partials/toc.html
@@ -2,7 +2,7 @@
 {{- $has_headers := ge (len $headers) 1 -}}
 {{- if $has_headers -}}
 <div class="toc side">
-    <details {{if (.Param "TocOpen") }} open{{ end }}>
+    <details id="toc" {{if (.Param "TocOpen") }} open{{ end }}>
         <summary accesskey="c" title="(Alt + C)">
             <span class="details">{{- i18n "toc" | default "Table of Contents" }}</span>
         </summary>