The latest versions of Mozilla Firefox display ads on icons of a new tab. If you are one of those who can't stand them, you can easily get rid of them.
The Mozilla Foundation added these ad tiles to reduce its revenue dependence on Google, which had been their main source of revenue for many years, due to searchof Google which was the default machine search in the browser Firefox. The Mozilla Foundation, however, chose not to renew it cooperation his with the company, and so as an alternative source of income, he decided to place ads on the page of each new tab.
Mozilla claims that these new ad slots do not jeopardize your privacy, that is, they are not used to track your activity or collect third-party information. However, some of you may not want to have them on every new tab you open.
To get rid of your ads, do the following:
Open a new tab in Firefox
Click on the gray gear icon in the upper right corner to see its menu and select the "Classic" option.
You're done. With Classic, Firefox will only display webpages from your browsing history on the new tab page. Note that tiles already existing and displaying ads will not be left alone. You should remove them yourself.
Alternatively, instead of the Classic option, you can select "Blank", but your new tabs will appear blank, which makes them less useful.