diff --git a/src/asciidoctor-external-links-attributes.js b/src/asciidoctor-external-links-attributes.js
new file mode 100644
index 00000000..4873fad7
--- /dev/null
+++ b/src/asciidoctor-external-links-attributes.js
@@ -0,0 +1,23 @@
+'use strict';
+
+module.exports = function externalLinksAttributes () {
+    this.docinfoProcessor(function(){
+      this.process(({backend}) => {
+        if (backend !== 'html5') {
+          return '';
+        }
+
+        return `<script>
+  (function(d){
+    const {origin} = window.location;
+
+    Array.from(document.querySelectorAll('a[href]'))
+      .filter(link => link.href.indexOf(origin) !== 0)
+      .forEach(link => {
+        link.setAttribute('target', '_blank');
+        link.setAttribute('rel', 'noopener');
+      });
+  })(document);</script>`;
+      });
+    });
+};