The script provides a series of much-needed enhancements for YouTube, including: 1) an optimized video details page layout, 2) free video downloading, 3) video screenshots, 4) dark/light theme switching, 5) video fast‑forwarding, and more.
< Feedback on Enhancer for YouTube™: New Layout, Video Downloader, and More Features
Just a hyper link to a third-party youtube download website and it required to install a coupon ad extension
跳转到第三方网站，要求安装优惠券广告插件