diff --git a/app.js b/app.js
index 4c9a540..db1e214 100644
--- a/app.js
+++ b/app.js
@@ -5,6 +5,7 @@ import ServeDrive from 'serve-drive';
 import Hyperdrive from 'hyperdrive';
 import Corestore from 'corestore';
 import { EventEmitter } from 'events';
+import fs from "fs";
 
 const storagePath = `./storage/storage_${Date.now()}_${Math.random().toString(36).substring(2, 15)}`;
 const store = new Corestore(storagePath);
@@ -23,6 +24,13 @@ const eventEmitter = new EventEmitter();
 // Define servePort at the top level
 let servePort;
 
+// Object to store all the information we want to save
+let config = {
+  username: '',
+  userAvatar: '',
+  rooms: []
+};
+
 // Function to get a random port between 1337 and 2223
 function getRandomPort() {
   return Math.floor(Math.random() * (65535 - 49152 + 1)) + 49152;
@@ -136,7 +144,7 @@ function registerUser(e) {
     reader.onload = async (event) => {
       const buffer = new Uint8Array(event.target.result);
       await drive.put(`/icons/${regUsername}.png`, buffer);
-      userAvatar = `http://localhost:${servePort}/icons/${regUsername}.png`; // Set the correct URL
+      config.userAvatar = userAvatar = `http://localhost:${servePort}/icons/${regUsername}.png`; // Set the correct URL
       registeredUsers[regUsername] = userAvatar;
       localStorage.setItem('registeredUsers', JSON.stringify(registeredUsers));
       continueRegistration(regUsername);
@@ -156,13 +164,15 @@ async function continueRegistration(regUsername) {
     return;
   }
 
-  userName = regUsername;
+  config.username = userName = regUsername;
   setupDiv.classList.remove('hidden');
   document.querySelector('#register').classList.add('hidden');
   loadingDiv.classList.add('hidden');
 
   const randomTopic = crypto.randomBytes(32);
   document.querySelector('#chat-room-topic').innerText = truncateHash(b4a.toString(randomTopic, 'hex'));
+
+  writeJsonToFile("./config.json", config);
 }
 
 async function createChatRoom() {
@@ -207,6 +217,9 @@ function addRoomToList(topic) {
   roomItem.dataset.topic = topic;
   roomItem.addEventListener('click', () => switchRoom(topic));
   roomList.appendChild(roomItem);
+
+  config.rooms.push(topic);
+  writeJsonToFile("./config.json", config);
 }
 
 function switchRoom(topic) {
@@ -226,6 +239,9 @@ function leaveRoom() {
   }
   document.querySelector('#chat').classList.add('hidden');
   document.querySelector('#setup').classList.remove('hidden');
+
+  config.rooms = config.rooms.filter(e => e !== currentRoom.topic);
+  writeJsonToFile("./config.json", config);
 }
 
 function sendMessage(e) {
@@ -301,6 +317,9 @@ async function updateIcon(username, avatarBuffer) {
     const avatarBlob = new Blob([avatarBuffer], { type: 'image/png' });
     const avatarUrl = URL.createObjectURL(avatarBlob);
     userIcon.src = avatarUrl;
+
+    config.userAvatar = avatarUrl;
+    writeJsonToFile("./config.json", config);
   }
 }
 
@@ -316,4 +335,11 @@ function toggleSetupView() {
   setupDiv.classList.toggle('hidden');
 }
 
+function writeJsonToFile(filePath, data) {
+  fs.writeFile(filePath, JSON.stringify(data), (err) => {
+    if (err) return console.error(err);
+    console.log("File has been created");
+  });
+}
+
 initialize();