The New Tab page includes some shortcuts by default, including Amazon Search (see "@amazon" in the attached picture), which I [[Customize items on your Firefox New Tab page|dismissed]] shortly after installation. (The only options are "Pin/Unpin" and "Dismiss".) However, I want to create such shortcut for another search engine, like https://duckduckgo.com/?q=%s&iax=images&ia=images and I don't see the option - even if I set the URL to include "%s" and the name of the pinned shortcut begins with "@", as with [[How to search IMDB, Wikipedia and more from the address bar|smart keyword search]] and the Amazon search shortcut, respectively. I am an advanced user and don't mind manually editing files in my [[Profiles - Where Firefox stores your bookmarks, passwords and other user data|profile folder]] (after I [[Back up and restore information in Firefox profiles|back it up]] of course). '''Edit:''' I found a reference to it in prefs.js in my profile but changing it using user.js only caused the user_pref to disappear with no effect on the tile items. <code> user_pref("browser.newtabpage.pinned", "[null,null,null,null,{\"url\":\"https://www.amazon.com/\",\"label\":\"@amazon\",\"searchTopSite\":true},null]"); </code>