The latest versions of Mozilla Firefox display ads in the icons of a new tabs. If you are one of those who can't stand them, you can easily get rid of them.
The Mozilla Foundation added these tiles to ads to reduce its revenue dependency on Google, which has been the main source of revenue for many years, due to Google's search for the default search engine 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 are done. With the Classic option, Firefox will only display websites from your browsing history to the new tab page. Note that tiles that are already there and showing ads will not go away on their own. You will have to 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.