Powerful and easy to use. Some website have lots useless URL script kind of, that slow down the page loading. This addon can filter out those elements only by keywords and then those websites open lightening fast!

This guy literally saved the whole Internet.

A must have

Firefox settings says "disabled by private viewing. Don't know how to correct this. Please help.
TIA

Para quem quiser uma extensão que ajude na sua privacidade, essa é ela!

conforme y buen servicio

9-16-21: Still great. On some sites when you try to use the eyedropper, the popup for the script to delete the ad does not appear or appears and then immediately disappears or does not appear at all. Making it difficult to select the script that needs to be blocked. Still a great addon though.

If you don't have ublock origin, you should get it. Best add on on the market. Extremely useful in eliminating the garbage idiot admined websites throw your way. Has a learning curve but not bad. Kudos to the developer for this program, wish they'd design a web browser too. Great.

Soon, we should come up with a petition to declare uBO as the best Firefox add on of all time.