Of course, there is a lot more to this and the mix and meeting point of resizing of images, while also ensuring they keep an air of quality can take plenty of skill.
Aside from images and resizing there are other considerations at hand. To jump to the point; sometimes you don’t need to fit all the information from the big screen onto the small screen – the essentials are what matter.
Responsive design cuts out all the needless stuff and gives people a web version of the site that is easy to navigate, without them having to zoom in and also provides them with what they want to see. It eliminates the noise and makes the whole mobile browsing experience a pleasure.