Hacking Firefox to Always Auto Save Password Without Showing Notification Bar: Close Firefox Edit nsLoginManagerPrompter.js with notepad which is normally located in C:\Program Files\Mozilla Firefox\components\ Replace the entire lines 642 to 711 with the code below: var pwmgr = this._pwmgr; pwmgr.addLogin(aLogin); Now whenever you login to any website, Firefox will auto save the site, username and password to the login manager WITHOUT showing the notification bar. Note: even when you enter the wrong username or password, it will still be saved.