The Open Graph protocol enables any web page to become a rich object in a social graph. For instance, this is used on Facebook to allow any web page to have the same functionality as any other object on Facebook.
The open graph protocol allows developers to leverage Facebook in new and exciting ways. One of the easiest ways to venture into the world of Open Graph is to add the open graph meta tags to your site.
Open graph meta tags allow you to control what content shows up when a page is shared on Facebook. We’ve all seen posts like these on Facebook. Ever wonder how you can control the content that displays. Well the answer is Open Graph.
Open graph protocol is a protocol which is used to integrate any web page into the social graph. For example Facebook can be your social graph or social circle.
Open graph is a set of rules or instructions which are pretty much handy when one wants its webpage to be integrated with famous social sites.Not only it makes your web page look great but also enables it to be shared and rich enough.