Find it in the Microsoft Edge Add-ons store.

Installing is the first step toward transforming your browsing experience with custom userscripts. This extension acts as a manager, allowing you to run small JavaScript programs that modify web pages—whether that’s adding a "dark mode" to a site that lacks it, automating repetitive tasks, or enhancing the functionality of platforms like Discord or ChatGPT. 1. Installing the Extension

Once installed, you may need to adjust a few settings to ensure your scripts run correctly: ChatGPT converts pasted text to file attachment

Links for these are also available directly on the Tampermonkey homepage. 2. Initial Configuration