What the heck is a responsive website and why is it so important? A responsive website is a website that automatically resizes to the size of your media: phone, tablet, laptop or 24 inch monitor. Most important is that the responsive site resizes to your phone. That way, when you are on the road and looking for a house, a restaurant, or a business, you can see the site without having to scroll left and right, back and forth. The great advantage is that Google will serve up a site that is responsive, higher than the sites that are not responsive.