2 Ways to Unsubscribe from Push Notifications From Desktop:

Method 1:  Unsubscribe at the time you receive a notification from a website

Chrome offers a simple single click opt-out and if you right click when you receive a notification, it will show a option to disable notifications from that domain, as shown below.  Just click on that link to unsubscribe.

Method 2: Unsubscribe from receiving push notification from a website without a notification

Here are step by step instructions to unsubscribe from Chrome Push Notifications

  1. Open a new browser tab and type chrome://settings/content
  2. Go to Notifications section. Click Manage Exceptions. This will list all the URL from where you have subscribed to notifications. You can click on the URL of the site you want to unsubscribe. You can allow or deny or completely remove a website

For Firefox, follow the steps outlined here (summarized Below)

  1. Go to the Firefox menu New Fx Menu and select Options.
  2. Select the Content panel and click the Choose… button under Notifications.
  3. Select the site.
  4. Click Remove Site.

Unsubscribe from Push Notifications In Mobile Browser

If you are trying to unsubscribe from Chrome Mobile browser, follow the following steps.

  1. Open the Chrome browser, then go to settings by clicking the menu on the top right.
  2. Go to Site Settings
  3. Next Click on Notifications.
  4. Here you will see a list of websites to whom you have granted permission to display notifications. Select the site you want to unsubscribe, and then click Clear and Reset.