After you uploaded website files to the subscription, you can check how your site will look in a web browser, even before the information about the new site has spread in the Domain Name System.
To preview a site:
You site will open in a new browser window.
Note: The contents of password-protected directories might be inaccessible in the Preview mode.
Sometimes, you may need to show your site to someone when your domain name is not registered yet. There are several ways to do it without giving a person access to your customer account. Learn more in the section Previewing Websites.