The site seal is the image which shows all your visitors that your website is protected so that they can feel safe browsing through it and leaving their personal details, like credit card and address information. It gives you instant credibility in the online world by visually reassuring your clients that your web pages are properly verified and secured.
In order to add a site seal you can follow the instructions on the AlphaSSL Official Page, after the installation of your Private SSL certificate.
