YouTube Like-Dislike Shortcut is a Firefox extension designed to enhance user interaction with videos on YouTube. This multimedia tool allows users to quickly like or dislike videos using simple keyboard shortcuts, replicating the functionality found in YouTube Music. Users can press Shift+Plus to like and Shift+Minus to dislike, with additional support for Numpad shortcuts. The extension ensures that each rating is recorded only once, preventing accidental un-ratings unless specifically done with Shift+0.

Beyond basic functionality, the extension offers customization options, enabling users to set their own shortcuts and establish auto-like parameters based on watch time or subscription status. It is important to note that this tool does not display dislike counters, focusing instead on streamlining the user experience while rating content.