Facebook Page Description
Your Page can show a brief description of approximately 255 characters that displays below the cover image and the profile image at the top of your Page. This is great space to outline a concise statement about your business and list your website URL.
To update this area, go to Edit Settings in your admin panel, and under Basic Information look for Short Description.
Key Tip: Include your website address in the Short Description so it is always visible to those coming to your Page.