Open Graph is a technology that is used to pull data from a Site when you share a link to a Site. When you set up your Open Graph settings for your Pages, you can choose which information from these Pages are shown when a link is shared.
These settings only apply to the Page that you set them up on, so make sure to set Open Graph settings for each of your Pages.
When you don't set up your Open Graph settings, random content or sometimes no content is thrown out when you share a link.
When sharing a link to a Page, the URL is converted to a rich card pulling data from these settings.
Where can you find Open Graph Settings?
From your Page Details , underneath Page Templates and SEO Settings, is Open Graph settings.
What can you do here with your Open Graph Settings?
Give your Open Graph a title, keep it relevant so that people know what it's for.
A preferred URL for this.
An image to make your Open Graph look more appealing.
A description to entice people to click through to your site.
Choose an Open Graph type, this describes the type of content that is being shared. The drop-down menu consists of: article, book, profile and website.
Choose a twitter card type, this also describes the type of content that is being shared. The drop-down menu consists of : app, player, summary, and summary_large_image.