(@jeremy as requested)
alternative #2 thanks to @IegorT, for those of you who prefer to use the javascript console/search results page method, the following bits of javascript should work in duckduckgo and bing.
duckduckgo:
urls=Array.from(document.querySelectorAll("img.tile--img__img")).map(el=> el.hasAttribute('data-src')?el.getAttribute('data-src'):el.getAttribute('src')).map(src => decodeURIComponent(src.split("?u=")[1]));
window.open('data:text/csv;charset=utf-8,' + escape(urls.join('\n')));
bing:
urls=Array.from(document.querySelectorAll("a.iusc")).reduce((acc, el) => el.hasAttribute("m") ? acc.concat(JSON.parse(el.getAttribute("m")).murl) : acc, [])
window.open('data:text/csv;charset=utf-8,' + escape(urls.join('\n')));