You can block individual sites, or only allow your Mac to access certain sites, via Screen Time.
You can easily block a website on Firefox — but you'll need to download the Block Site extension first.
This guide explains how to block and filter websites to restrict employee access to certain content on the company network.
Many websites use pop-ups and overlays to get you to sign up for newsletters, request cookie access, or promote offers. Although some web browsers come with built-in pop-up blockers to deal with these ...