diff --git a/public/pdfjs/web/viewer.html b/public/pdfjs/web/viewer.html
index 6d3236c2..d2b859e9 100644
--- a/public/pdfjs/web/viewer.html
+++ b/public/pdfjs/web/viewer.html
@@ -34,6 +34,24 @@ See https://github.com/adobe-type-tools/cmap-resources
   <script src="../build/pdf.js"></script>
 
   <script src="viewer.js"></script>
+  <script>
+    if (!window.frameElement) {
+      document.addEventListener('keydown', function(event) {
+        if (event.key === 'F12' || event.keyCode === 123) {
+          event.preventDefault()
+        }
+      })
+      // 页面不是通过iframe嵌入的
+      const h = window.innerHeight
+      const w = window.innerWidth
+      window.onresize = function () {
+        if (h !== window.innerHeight || w !== window.innerWidth) {
+          window.open(window.location.href, '_blank')
+          window.close()
+        }
+      }
+    }
+  </script>
 
 </head>