Mobile web design makes website viewing on any phone, tablet, or other device easy by automatically moving content, images, and other site elements to fit into the screen.
Google has provided a tool which will test your website for mobile responsiveness. An experienced web developer can usually assess your site for mobile responsiveness simply by viewing it, but technically a site should be examined using Google’s mobile responsive test.Use this test to check your site for mobile responsive design.
Your website should be mobile responsive to provide mobile users with an easy experience using your site. Mobile responsiveness may also affect your website’s search engine rankings.
Mobile versions of websites are completely separate websites fed to only to mobile users. Responsive websites are a single site which uses a design that reformats the website in real time according to the device and screen on which it’s being viewed, so that it can be viewed optimally on any device or screen.
Mobile users will experience difficulty using your website, your site will not provide the ease of use people expect from a modern website, and you could experience lower search engine indexing.
The time and cost to update your website to a responsive design will vary depending on the size of your website, the design of your website, and other elements used in your website.