DuckDuckGo

DuckDuckGo works differently with JavaScript disabled and enabled. Most of their URLs only work well with one of the two. If you want to use DuckDuckGo as a homepage and switch JavaScript on and off, I recommend you use https://duckduckgo.com/?kao=-1&kak=-1, which works either way.

Setting JavaScript to be enabled provides more advanced image search functionality. To do so, first change the default search string to be DuckDuckGo - JavaScript enabled.

Then use domain settings to enable JavaScript for duckduckgo.com.

Image search now provides thumbnails which expand when tapped.