The Open Graph protocol. Best Practices. The Facebook Crawler fetches content from your site and generates a preview for people on Facebook.
When someone shares a URL on Facebook and Likes or Recommends a page on your site using a plugin, it activates the Facebook Crawler. If your content is publicly available, we should have no problem accessing it. Niallkennedy/open-graph-protocol-tools. Social Media Meta Tags: How to Use Open Graph and Cards. Using the Graph API. The Graph API is the primary way to get data in and out of Facebook's social graph. It's a low-level HTTP-based API that you can use to query data, post new stories, upload photos and a variety of other tasks that an app might need to do. This guide will teach you how to accomplish all these things in the Graph API. Best Practices. Home.