Resizer: Google-made tool for testing responsive web | Websites that can be opened properly on mobile devices are now an important ranking factor in the eyes of Google. Google announcement some time ago would have been both we hear, that Google is now a very priority website that can be opened on mobile phones and tablets, not just on the desktop.
Websites that support mobile will be more likely to appear on the main page than those that do not support mobile. It's about the core of the notice.
In addition, a web that can be opened properly on various devices will certainly make visitors happy, because they will not find any more super small web page and must be zoomed several times to be read.
Designing an intuitive and good user experience is certainly not easy, because it is a complicated proposition. To help web designers gain balance and ease in keeping pace with web technology, Google introduced Resizer for web designers & developers to test their mobile websites.