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diff --git a/manifest.json b/manifest.json
new file mode 100644
index 0000000..dc7b320
--- /dev/null
+++ b/manifest.json
@@ -0,0 +1,64 @@
+{
+    "name": "Role Playing Game Dices",
+    "short_name": "rgp-dices",
+    "start_url": "index.html",
+    "display": "standalone",
+    "background_color": "#ffffff",
+    "theme_color": "#ffffff",
+    "icons": [
+        {
+            "src": "/assets/icons/icon-72x72.png",
+            "type": "image/png",
+            "sizes": "72x72",
+            "purpose": "any"
+        },
+        {
+            "src": "/assets/icons/icon-96x96.png",
+            "type": "image/png",
+            "sizes": "96x96",
+            "purpose": "any"
+        },
+        {
+            "src": "/assets/icons/icon-128x128.png",
+            "type": "image/png",
+            "sizes": "128x128",
+            "purpose": "any"
+        },
+        {
+            "src": "/assets/icons/icon-144x144.png",
+            "type": "image/png",
+            "sizes": "144x144",
+            "purpose": "any"
+        },
+        {
+            "src": "/assets/icons/icon-144x144.png",
+            "type": "image/png",
+            "sizes": "144x144",
+            "purpose": "maskable"
+        },
+        {
+            "src": "/assets/icons/icon-152x152.png",
+            "type": "image/png",
+            "sizes": "152x152",
+            "purpose": "any"
+        },
+        {
+            "src": "/assets/icons/icon-192x192.png",
+            "type": "image/png",
+            "sizes": "192x192",
+            "purpose": "any"
+        },
+        {
+            "src": "/assets/icons/icon-384x384.png",
+            "type": "image/png",
+            "sizes": "384x384",
+            "purpose": "any"
+        },
+        {
+            "src": "/assets/icons/icon-512x512.png",
+            "type": "image/png",
+            "sizes": "512x512",
+            "purpose": "any"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/sw.js b/sw.js
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index 0000000..a1799d0
--- /dev/null
+++ b/sw.js
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+const rpgDicesVersion = "rpg-dices-v0.1"
+const assets = [
+    "/",
+    "/index.html",
+    "/style.css",
+    "/script.js",
+    "/js/libs/moment.js",
+    "/js/libs/sidebar/sidebar.js",
+    "/js/libs/sidebar/sidebar.css",
+    "/assets/add.svg",
+    "/assets/close.svg",
+    "/assets/dark.svg",
+    "/assets/dices.svg",
+    "/assets/export.svg",
+    "/assets/history.svg",
+    "/assets/import.svg",
+    "/assets/light.svg",
+    "/assets/menu.svg",
+    "/assets/plus.svg",
+    "/assets/roll.svg",
+    "/assets/dices/4.svg",
+    "/assets/dices/6.svg",
+    "/assets/dices/8.svg",
+    "/assets/dices/10.svg",
+    "/assets/dices/12.svg",
+    "/assets/dices/20.svg",
+    "/assets/dices/100.svg",
+    "/assets/dices/custom.svg",
+]
+
+self.addEventListener("install", installEvent => {
+    installEvent.waitUntil(
+        caches.open(rpgDicesVersion).then(cache => {
+            cache.addAll(assets)
+        })
+    )
+})
+
+self.addEventListener("fetch", fetchEvent => {
+    fetchEvent.respondWith(
+        caches.match(fetchEvent.request).then(res => {
+            return res || fetch(fetchEvent.request)
+        })
+    )
+})
\ No newline at end of file