Responsive web design (RWD) is a key technique to reach a wide range of users on mobile and desktop machines with just a single HTML design. When done right it will make your users happy and boost conversion rate.
On the other hand RWD has an impact on your whole workflow. Editors, graphics designers and content creators must adopt the principles of RWD to make it work.
One great part of RWD is fluid and adaptive images. On a broadband desktop internet connection you can afford to deliver high resolution images even suitable for ‘retina’ displays. On low bandwidth mobile connections you will serve lower resolutions and retain snappy site responses.