Intro
Tampermonkey is a browser extension. A browser extension is a small software program that extends the functionality of a web browser. These extensions are designed to add specific features or functionality to the browser, such as ad blocking, password management or, in this case, userscript injection.
Installation
Edge
https://microsoftedge.microsoft.com/addons/detail/tampermonkey/
Usage
Permissions
https://www.tampermonkey.net/faq.php?ext=iikm&updated=true&version=5.4.0#Q209
- Click Manage Extension → Enable Developer Mode