WPCode, previously known as Insert Headers and Footers by WPBeginner, is a highly popular code snippets plugin for WordPress with a user base of over 1 million websites. With WPCode, users can easily and securely incorporate custom WordPress features using code snippets, ultimately reducing the reliance on multiple plugins on their site.
Check out a demo of WPCode at https://wpcode.com/.
It's important to note that this file is in UNTOUCHED status, meaning it contains the original developer code without any alterations.