The Open Graph protocol enables developers to integrate their pages into Facebooks global mapping/tracking tool.
Facebook Open graph debugger you can test Sharing properties:
"You can use the Sharing Debugger to see the information that is used when your website content is shared on Facebook, Messenger and other places. The Batch Invalidator will let you refresh this information for multiple URLs at the same time. Open Graph markup lets you take control over how your website content appears to others. "