How To Customize Your Facebook Theme Yourself

“Greasemonkey is a Mozilla Firefox extension that allows users to install scripts that make on-the-fly changes to web page content after or before the page is loaded in the browser”

1. Download the addon from : https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/

 

 2. After installing the addon you can see a monkey icon on your header bar.

3. Now you have to search for the the scripts for the pages you want to make changes.

4. Visit the link https://greasyfork.org/en/scripts and select the script you want to add and click on install button. and you are done.

5. Check the website that you made changes by enabling the script .