The User Script Compiler can help you convert Greasemonkey scripts into Firefox extensions (XPI). Take a look at the screenshot below, and you'll see just how easy it is. Yes, the entire process is quite simple and requires no programming knowledge at all. TIPS: How to get Greasemonkey scripts? 1. In the gm_scripts directory under the Firefox folder, you will find all the scripts you have installed. 2. Download your desired Greasemonkey scripts from the UserScripts website.