diff --git a/_includes/head.html b/_includes/head.html
index a1ec1dc..39c3ebd 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -51,4 +51,17 @@
       <script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
       <script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
       <![endif]-->
+    <script>
+        window.addEventListener('load', function() {
+          navigator.serviceWorker.register('{{ site.baseurl }}/service-worker.js', {scope: '{{ site.baseurl }}/'})
+            .then(function(r) {
+              console.log('registered service worker');
+            })
+            .catch(function(whut) {
+              console.error('uh oh... ');
+              console.error(whut);
+            });
+        });
+    </script>
+    
   </head>
diff --git a/manifest.json b/manifest.json
index 3903b96..a820ae2 100644
--- a/manifest.json
+++ b/manifest.json
@@ -8,13 +8,16 @@ layout: null
     {
       "src": "{{ site.baseurl }}/img/favicons/favicon-96x96.png",
       "sizes": "96x96",
-      "type": "image/png"
+      "type": "image/png",
+      "density": "2.0"
     },
     {
       "src": "{{ site.baseurl  }}/img/favicons/apple-touch-icon-144x144.png",
       "sizes": "144x144",
-      "type": "image/png"
+      "type": "image/png",
+      "density": "3.0"
     }
   ],
-  "display": "standalone"
+  "display": "standalone",
+  "start_url": "{{ site.baseurl }}/index.html"
 }
\ No newline at end of file
diff --git a/service-worker.js b/service-worker.js
new file mode 100644
index 0000000..128cd99
--- /dev/null
+++ b/service-worker.js
@@ -0,0 +1,2 @@
+// Empty service worker for App Install banners to work. 
+// Can be implemented to have offline and sync support.