It is one of the best free browser extensions for blocking websites you do not want to visit.

You can install it by downloading the extension and clicking on the "Add-on Manager" button. After you install the ScriptFilter, you can access the Settings page where you can set it to block all types of resources and resources from a particular website.

Once you have installed it, you can set up a list of websites and set it to block all resources. The settings of this feature are very simple and straightforward.

The settings page will have an option that allows you to block resources by language. It is possible to choose either the English, French, or Italian language.

The settings page will also have an option for you to block resources on a specific website. For this, you need to visit a website and click on the settings button in the top-right corner of the screen.

After you have entered the settings, you will be able to access a list of sites that you want to block. You can set it to block all resources or you can set it to block only certain resources such as JavaScript, CSS, images, videos, frames.

In order to do that, you need to click on the "Apply Changes" button.

If you want to change the settings, you will need to visit the settings page again. In this way, you can set the websites to block as well as the resources to block.