Get Cover Download Bookmarklets" offers a convenient way to swiftly retrieve and download cover images from webpages, saving users time and effort. This may be particularly useful for users who frequently download images or those seeking a more direct approach to managing media content.
As of my last knowledge update in September 2021, there was no widely known or established concept called "YouTube Cover Bookmarklets." However, it's possible that this term or concept has emerged or become relevant after my last update
In your web browser, go to the webpage where you want to create the bookmarklet. Then, right-click on your bookmarks bar and select "Add Page" or "Bookmark This Page" (the exact wording may vary depending on your browser).