diff --git a/static/toolbar.js b/static/toolbar.js
index 2dc5995..24ec023 100644
--- a/static/toolbar.js
+++ b/static/toolbar.js
@@ -111,6 +111,18 @@
     if(btn.dataset.k) send(btn.dataset.k);
   });
 
+  // Prevent browser from stealing Tab key — send it to the terminal instead
+  document.addEventListener('keydown', function(e){
+    if(e.key === 'Tab' && !e.altKey && !e.ctrlKey && !e.metaKey){
+      var active = document.activeElement;
+      // Only intercept if focus is on the terminal or body (not on toolbar buttons)
+      if(!active || active === document.body || active.closest('.xterm')){
+        e.preventDefault();
+        send('\t');
+      }
+    }
+  });
+
   // Shrink terminal for toolbar on mobile (2 rows)
   var obs=new MutationObserver(function(){
     var el=document.querySelector('.xterm');