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diff --git a/apple-icon-60x60.png b/apple-icon-60x60.png
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diff --git a/apple-icon-76x76.png b/apple-icon-76x76.png
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diff --git a/apple-icon-precomposed.png b/apple-icon-precomposed.png
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diff --git a/apple-icon.png b/apple-icon.png
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diff --git a/browserconfig.xml b/browserconfig.xml
new file mode 100644
index 0000000..c554148
--- /dev/null
+++ b/browserconfig.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig><msapplication><tile><square70x70logo src="/ms-icon-70x70.png"/><square150x150logo src="/ms-icon-150x150.png"/><square310x310logo src="/ms-icon-310x310.png"/><TileColor>#ffffff</TileColor></tile></msapplication></browserconfig>
\ No newline at end of file
diff --git a/favicon-16x16.png b/favicon-16x16.png
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index 0000000..25eb341
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diff --git a/favicon-32x32.png b/favicon-32x32.png
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diff --git a/favicon-96x96.png b/favicon-96x96.png
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diff --git a/favicon.ico b/favicon.ico
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diff --git a/index.html b/index.html
index 4db65a8..b1d4762 100644
--- a/index.html
+++ b/index.html
@@ -3,6 +3,23 @@
 <head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="apple-touch-icon" sizes="57x57" href="/apple-icon-57x57.png">
+    <link rel="apple-touch-icon" sizes="60x60" href="/apple-icon-60x60.png">
+    <link rel="apple-touch-icon" sizes="72x72" href="/apple-icon-72x72.png">
+    <link rel="apple-touch-icon" sizes="76x76" href="/apple-icon-76x76.png">
+    <link rel="apple-touch-icon" sizes="114x114" href="/apple-icon-114x114.png">
+    <link rel="apple-touch-icon" sizes="120x120" href="/apple-icon-120x120.png">
+    <link rel="apple-touch-icon" sizes="144x144" href="/apple-icon-144x144.png">
+    <link rel="apple-touch-icon" sizes="152x152" href="/apple-icon-152x152.png">
+    <link rel="apple-touch-icon" sizes="180x180" href="/apple-icon-180x180.png">
+    <link rel="icon" type="image/png" sizes="192x192"  href="/android-icon-192x192.png">
+    <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
+    <link rel="icon" type="image/png" sizes="96x96" href="/favicon-96x96.png">
+    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">
+    <link rel="manifest" href="/manifest.json">
+    <meta name="msapplication-TileColor" content="#ffffff">
+    <meta name="msapplication-TileImage" content="/ms-icon-144x144.png">
+    <meta name="theme-color" content="#ffffff">
   <title>White Balance Cheat Sheet</title>
   <style>
     /* http://meyerweb.com/eric/tools/css/reset/ 
@@ -56,16 +73,18 @@
     }
     p {
       padding: 10px;
+      text-align: center;
     }
     ul {
       display: grid;
       grid-template-columns: 1fr 1fr;
       grid-auto-rows: auto;
+      margin: 0 auto;
+      max-width: 800px;
     }
     li {
       box-sizing: border-box;
-      width: calc(100vw/2);
-      height: calc(100vh / 4);
+      aspect-ratio: 4/3;
       padding: 10px;
     }
 
@@ -106,6 +125,6 @@
     <li class="rose">Result: Rose</li>
     <li class="teal">Result: Teal</li>
   </ul>
-  <p>based on @cranchyou white balance cheat sheet</p>
+  <p>based on <a href="https://www.instagram.com/p/C9dBz4LPrJL/" rel="noopener noreferrer" target="_blank">@cranchyou</a> white balance cheat sheet</p>
 </body>
 </html>
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
new file mode 100644
index 0000000..009c6ac
--- /dev/null
+++ b/manifest.json
@@ -0,0 +1,45 @@
+{
+ "name": "White Balance Cheat Sheet",
+ "start_url": "/",
+  "lang": "en-GB",
+  "theme_color": "#FFF",
+  "display": "fullscreen",
+  "icons": [
+    {
+      "src": "\/android-icon-36x36.png",
+      "sizes": "36x36",
+      "type": "image\/png",
+      "density": "0.75"
+    },
+    {
+      "src": "\/android-icon-48x48.png",
+      "sizes": "48x48",
+      "type": "image\/png",
+      "density": "1.0"
+    },
+    {
+      "src": "\/android-icon-72x72.png",
+      "sizes": "72x72",
+      "type": "image\/png",
+      "density": "1.5"
+    },
+    {
+      "src": "\/android-icon-96x96.png",
+      "sizes": "96x96",
+      "type": "image\/png",
+      "density": "2.0"
+    },
+    {
+      "src": "\/android-icon-144x144.png",
+      "sizes": "144x144",
+      "type": "image\/png",
+      "density": "3.0"
+    },
+    {
+      "src": "\/android-icon-192x192.png",
+      "sizes": "192x192",
+      "type": "image\/png",
+      "density": "4.0"
+    }
+  ]
+}
\ No newline at end of file
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