The browser then receives the HTML code of the page adapted for viewing

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It works like this: after a request to the URL, the server determines the characteristics of the visitor's device. on a specific screen. Thanks to dynamic serving, one of the main disadvantages of RWD is eliminated: high traffic consumption and load on the user's device. When you visit a RESS-powered website from a smartphone or desktop, your browsers download different code.


In doing so, you receive all the information contained on the page. turkey email list Moreover, you can adapt the navigation, menu, design, and content of the pages to the needs of owners of specific devices. The simplest example of content adaptation: by identifying the user's device by the server, you can show owners of iOS and Android devices links to download applications from the App Store and Google Play, respectively.


The correct operation of sites with RESS is ensured by the Vary HTTP header, contained in the server's response to the request. With its help, the browser downloads the HTML code corresponding to the device's characteristics. Also, thanks to the Vary HTTP header, search engines determine the mobile friendliness of the resource. RESS is used by SlideShare, CNN, WordPress.com, and other sites. For example, if you open the CNN site on a desktop computer, the page code will contain JavaScript.