Copying a WordPress Page Without Plugins
Copy a WordPress page without plugins can be done by using the WordPress Media Library. To do this, open the Media Library in WordPress and select the page you want to copy. Once the page is selected, click the Copy button in the toolbar. The Copy Page dialog box will open.
PRO TIP: If you are looking for a way to copy a WordPress page without plugins, be warned that this is not possible. WordPress does not have a built-in way to do this, and there are no plugins that will allow you to do this either. Attempting to copy a WordPress page without using plugins will likely result in lost data and/or website errors.
In the dialog box, select the destination site from the Site menu and click OK. The copied page will open on the destination site.