Responsive design

Responsive design lets a single website rearrange itself for the device: on a phone the columns stack, menus collapse and images rescale, so everything reads well without zooming. Since more than half of all traffic comes from mobile, a site that does not adapt loses visitors and sales. Google also indexes mobile-first, so responsive design directly affects SEO ✕ SEO (search engine optimization) covers all the measures that get a website to appear higher in Google's unpaid results and thereby attract more visitors. More in the glossary → . Good website builders generate responsive pages automatically and let you preview each screen size. It is always worth checking the result on a real phone before publishing. More in the best website builders comparison.