If the summary card for a link you’re sharing is outdated or flawed in some way, Facebook has a convenient developer tool called the Sharing Debugger to fix it. This tool lets you see the data that’s pulled when your website content is shared on Facebook, Messenger, and other places.
To access the tool, navigate to Facebook for Developers or click this link. The Sharing Debugger sits between the Webmaster and Batch Invalidator tools and will display as a basic text field to enter your desired URL.
Just paste your URL into the text field and click Debug.