Mobile Page Viewer is a Chrome extension developed by Александр Помозов. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This free extension allows users to view website pages in a convenient mobile format.

The main purpose of this extension is to provide users with an easy way to view mobile versions of website pages. It not only changes the size of the window in which the website is displayed but also modifies the user-agent of the browser itself. This allows for a comprehensive analysis of the website's design.

With Mobile Page Viewer, users can quickly and accurately assess how their website or any other website appears on mobile devices. It provides a convenient and efficient way to preview and test mobile versions of websites without the need for physical mobile devices.