Unwanted notifications prompt could be disabled from your browser. When you visit a website especially those ones carrying news or shopping, you will see a popup informing you of a notification to be shown on your desktop. If the notifications are unwanted, just disable.
1. MOZILLA FIREFOX
Most browsers, firefox inclusive do not ordinary disable or prevent all web notification. To disable, type about:config into firefox’s url or address bar and press enter. A warning will be shown “be careful when using the about:config page, as you could cause problems with firefox by changing some settings.” Proceed by clicking “I accept the risk”. The dom.webnotifications.enabled option that appear. This will disable the web notification as it will change the settings to “false”. This will cause all web notifications to be disabled, this will cause you the inability of choosing either to accept any notifications from any website as all notifications have been disabled.
2. GOOGLE CHROME
As for chrome, it is quite straight forward. Just click on the menu button and select “settings” locate the “advanced settings” just at the bottom of the settings page and then click the “content settings” button below privacy.
Scroll down to the notifications group and select “do not allow any site to show notifications”. One good thing about chrome is that you can always allow different websites to give notifications later. You can always manage this by clicking on the “manage exceptions” button here to give access to a website to give notifications.