What is the use of Viewport parameters in mobile browser

Editor to share with you what is the use of mobile browser Viewport parameters, I believe most people do not know much, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Mobile browsers place pages in a virtual "viewport" that is usually wider than the screen, so that instead of squeezing each page into a small window (which destroys the layout of pages that are not optimized for mobile browsers), users can pan and zoom to see different parts of the page. Mobile Safari browsers have recently introduced viewport as a meta tag, allowing web developers to control the size and scaling of viewport, which is also basically supported by other mobile browsers.

Viewport Foundation

A commonly used viewport meta tag for a page optimized for mobile pages is roughly as follows: