diff --git a/public/electron.js b/public/electron.js
index 30d54d3..579dcdb 100644
--- a/public/electron.js
+++ b/public/electron.js
@@ -63,14 +63,8 @@ const createWindow = () => {
   mainWindow.show();
 
   mainWindow.loadURL(startUrl).then(() => {
-    console.info('pyCat ');
+    process.env.DEV && mainWindow.webContents.openDevTools();
   });
-  console.log('LOOK here:');
-  console.log(startUrl);
-  console.log(String(Object.assign(new URL('http://localhost:3000'),
-      {pathname: ''}
-  )));
-  process.env.DEV && mainWindow.webContents.openDevTools();
 
   mainWindow.on('closed', function() {
     pycatService.shutdown();
diff --git a/src/jsx/Converter.js b/src/jsx/Converter.js
index 16ba49d..bcf81f7 100644
--- a/src/jsx/Converter.js
+++ b/src/jsx/Converter.js
@@ -37,7 +37,7 @@ const Converter = (props) => {
    * @param {object} message - response
    */
   const onMessage = (message) => {
-    console.log(message);
+    console.info(message);
   };
 
   /**
diff --git a/src/jsx/socket.io/Socket.jsx b/src/jsx/socket.io/Socket.jsx
index 7edb380..a7fc3de 100644
--- a/src/jsx/socket.io/Socket.jsx
+++ b/src/jsx/socket.io/Socket.jsx
@@ -18,13 +18,13 @@ class Socket extends React.Component {
     this.socket.status = 'initialized';
 
     this.socket.on('connect', () => {
-      console.log('socket.io connect');
+      console.info('[Socket] connect');
       this.socket.status = 'connected';
       debug('connected');
     });
 
     this.socket.on('disconnect', () => {
-      console.log('socket.io disconnect');
+      console.info('[Socket] disconnect');
       this.socket.status = 'disconnected';
       debug('disconnect');
     });
diff --git a/src/serviceWorker.js b/src/serviceWorker.js
index 2fd7fe6..09dd216 100644
--- a/src/serviceWorker.js
+++ b/src/serviceWorker.js
@@ -43,7 +43,7 @@ export function register(config) {
         // Add some additional logging to localhost, pointing developers to the
         // service worker/PWA documentation.
         navigator.serviceWorker.ready.then(() => {
-          console.log(
+          console.info(
               'This web app is being served cache-first by a service ' +
               'worker. To learn more, visit https://bit.ly/CRA-PWA',
           );
@@ -75,7 +75,7 @@ function registerValidSW(swUrl, config) {
               // At this point, the updated precached content has been fetched,
               // but the previous service worker will still serve the older
               // content until all client tabs are closed.
-                console.log(
+                console.info(
                     'New content is available and will be used when all ' +
                   'tabs for this page are closed. See https://bit.ly/CRA-PWA.',
                 );
@@ -88,7 +88,7 @@ function registerValidSW(swUrl, config) {
               // At this point, everything has been precached.
               // It's the perfect time to display a
               // "Content is cached for offline use." message.
-                console.log('Content is cached for offline use.');
+                console.info('Content is cached for offline use.');
 
                 // Execute callback
                 if (config && config.onSuccess) {