What makes a good mobile site? Consumers increasingly rely on the mobile web to research and make purchases, which makes it more important than ever for companies to have an effective mobile presence. But what makes a good mobile site? To answer this question, Google partnered with AnswerLab to research how a range of users interacted with a diverse group of mobile sites. From this research, Google established 25 principles of mobile site design to help companies build mobile sites that delight customers and drive conversions. Review all 25 principles below.