Don't Visit - Block Sites is a browser extension that is used to prevent you from browsing websites that you don't want to see. The features of this extension are quite simple. This browser extension blocks you from accessing specifiable websites completely. You can simply install the browser extension.

The options page is accessible from the browser's address bar. You can find it next to the Don't Visit icon next to the address bar. It is also accessible from the browser's menu by clicking "More Tools>Extensions". 

This extension can help you with self-control, productivity, or simply just by blocking a website that you don't want to see.