diff --git a/stirling-pdf/src/main/resources/templates/fragments/common.html b/stirling-pdf/src/main/resources/templates/fragments/common.html
index 40a4389af..4de2a8838 100644
--- a/stirling-pdf/src/main/resources/templates/fragments/common.html
+++ b/stirling-pdf/src/main/resources/templates/fragments/common.html
@@ -31,7 +31,9 @@
       const browserZoom = currentDPR / systemDPR;
       
       // Counter-scale to maintain same visual size
-      const navScale = 1.1 / currentDPR;
+      const isMobile = window.innerWidth <= 768 || /Android|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
+      const baseScale = isMobile ? 2 : 1.1; // 180% bigger on mobile (1 + 1.8 = 2.8, but 1.98 accounts for counter-scaling)
+      const navScale = baseScale / currentDPR;
       // Dropdowns at 100% (no additional scaling)
       const dropdownScale = 1.0;