If you are a Mozilla user, NoScript is a great option with which to improve your development on your PC.
NoScript is a free plug-in that will allow you to control everything that will be executed when opening a web page.
From now on and thanks to NoScript, your hours on the internet will be a pleasure, not only for seeing exactly what you want, but because you will be browsing highly secure.
Within its options we can choose which websites will be able to show all their contents and which will have our desired filter.
And all this totally in Spanish.