You have to know who you are talking to before you can send only what a client needs. Using RESS.io APIs, you can get detailed information of a visitor's mobile device and serve device type-specific implementations that are rendered on the server-side.
Easy & Advanced
No matter if you are a newbie or a seasoned web designer/developer, RESS.io is very easy to get started, use & advance. It takes literally a couple of minutes to improve your website's performance & conversion on mobile, and focus on your advanced implementations.