YouTube on Hover Preview is a Firefox extension designed to enhance the multimedia experience by allowing users to view YouTube videos in a floating panel. This innovative tool activates when the mouse hovers over a YouTube link, displaying a preview without the need to navigate away from the current page. The extension is particularly useful for quickly assessing content before fully committing to watching it, streamlining the browsing process.

The extension supports two viewing modes: a centered screen option that remains static regardless of scrolling, and a mode that positions the player at the link's location. To dismiss the floating player, users simply need to click anywhere on the page. This functionality, along with its subscription-based model, makes YouTube on Hover Preview a practical addition for those who frequently engage with video content online.