Webview3 is an application that allows us to display web pages within an application, without the need to open a browser to access that website. This allows users to easily access website content and functions within the application. We can access web pages in the webview by automatically loading the URL of the web page into the webview, and users can call functions on that website through the webview without having to open the browser every time. Additionally, webview has the ability to display UI and support responsive web display, making it a useful tool for application developers who want to display website content and functions in their applications easily and conveniently.