diff --git a/index.html b/index.html
index c787a15..d3b6948 100644
--- a/index.html
+++ b/index.html
@@ -18,6 +18,7 @@
 	De web a PWA.
 
     Copyright Babel.
+	(y ahora Pablo participa también)
 </body>
 
-</html>
\ No newline at end of file
+</html>
diff --git a/pwabuilder-sw.js b/pwabuilder-sw.js
new file mode 100644
index 0000000..09e240f
--- /dev/null
+++ b/pwabuilder-sw.js
@@ -0,0 +1,47 @@
+// This is the "Offline page" service worker
+
+importScripts('https://storage.googleapis.com/workbox-cdn/releases/5.1.2/workbox-sw.js');
+
+const CACHE = "pwabuilder-page";
+
+// TODO: replace the following with the correct offline fallback page i.e.: const offlineFallbackPage = "offline.html";
+const offlineFallbackPage = "ToDo-replace-this-name.html";
+
+self.addEventListener("message", (event) => {
+  if (event.data && event.data.type === "SKIP_WAITING") {
+    self.skipWaiting();
+  }
+});
+
+self.addEventListener('install', async (event) => {
+  event.waitUntil(
+    caches.open(CACHE)
+      .then((cache) => cache.add(offlineFallbackPage))
+  );
+});
+
+if (workbox.navigationPreload.isSupported()) {
+  workbox.navigationPreload.enable();
+}
+
+self.addEventListener('fetch', (event) => {
+  if (event.request.mode === 'navigate') {
+    event.respondWith((async () => {
+      try {
+        const preloadResp = await event.preloadResponse;
+
+        if (preloadResp) {
+          return preloadResp;
+        }
+
+        const networkResp = await fetch(event.request);
+        return networkResp;
+      } catch (error) {
+
+        const cache = await caches.open(CACHE);
+        const cachedResp = await cache.match(offlineFallbackPage);
+        return cachedResp;
+      }
+    })());
+  }
+});
\ No newline at end of file
diff --git a/sw.js b/sw.js
deleted file mode 100644
index 80e2171..0000000
--- a/sw.js
+++ /dev/null
@@ -1,2 +0,0 @@
-if(!self.define){let e,i={};const n=(n,r)=>(n=new URL(n+".js",r).href,i[n]||new Promise((i=>{if("document"in self){const e=document.createElement("script");e.src=n,e.onload=i,document.head.appendChild(e)}else e=n,importScripts(n),i()})).then((()=>{let e=i[n];if(!e)throw new Error(`Module ${n} didn’t register its module`);return e})));self.define=(r,o)=>{const s=e||("document"in self?document.currentScript.src:"")||location.href;if(i[s])return;let t={};const c=e=>n(e,s),f={module:{uri:s},exports:t,require:c};i[s]=Promise.all(r.map((e=>f[e]||c(e)))).then((e=>(o(...e),t)))}}define(["./workbox-5fc434c9"],(function(e){"use strict";self.addEventListener("message",(e=>{e.data&&"SKIP_WAITING"===e.data.type&&self.skipWaiting()})),e.precacheAndRoute([{url:"images/icono.png",revision:"e134b60d9dc4271a672b6cc947f22bf5"},{url:"images/principal-horizontal.png",revision:"688431d1fd27dead61081ffe700e9593"},{url:"index.html",revision:"40624c4cf34373f498b61ad6be2ec205"},{url:"manifest.json",revision:"22bd873e24ef003621065a36cfe336f8"}],{ignoreURLParametersMatching:[/^utm_/,/^fbclid$/]})}));
-//# sourceMappingURL=sw.js.map