Website Blocker For Firefox To Work?

Does anyone know of free apps for you that block certain websites while you want to work? I used Mozilla Firefox on the laptop.

Take uBlock, that blocks everything that is harmful + advertising and you can also create filters or block pages yourself.

https://addons.mozilla.org/...ck-origin/

What do you mean by certain websites? E.g. All social media or predefined pages?

For example, I can set to block gutefrag.net for a while, but social media as a whole would also work

So I don't know a free program but Sophos Intercept X can do that.