YouTube QR Code Overlay is a Chrome extension developed by Fourth Mouse. This tool overlays a customizable QR code on top of YouTube videos, displaying the video's URL for easy attribution. By scanning the QR code, viewers can quickly access the video link without interrupting the viewing experience. This feature aims to streamline sharing and attributing YouTube content efficiently.

The extension is a free, open-source project available for Chrome users. It offers a simple yet effective solution for sharing video links without the need for manual input. The customizable QR code enhances user experience by providing a convenient way to access video URLs.