This will depend on what site you are navigating on or if it is in the Firefox interface. However what you are describing sounds like tooltips. In Firefox: #"Type about:config in Firefox's address bar and hit on the enter key afterwards. # Confirm that you will be careful if this is the first time that you are accessing the page. # Paste browser.chrome.toolbar_tips into the search form on top. #The preference is of the boolean type, which means that it can either be true (enabled) or false (disabled). #Just double-click on the name to change it to false to disable tooltips." Reference: [http://www.ghacks.net/2013/10/09/disable-tooltips-firefox/]