The Facebook Sharing Debugger tool was created to help you solve issues with your Open Graph Meta Tags, as well as troubleshoot caching. You can find the Sharing Debugger on the Meta for Developers site under Tools. To crawl a post, simply enter the URL and click on Debug: Facebook Sharing Debugger tool.

You can now remote-debug sites in the Facebook in-app browser on Android. It is enabled automatically so once your device is in dev mode with USB debugging and a browser open just visit chrome://inspect to attach to the WebView.

Debugging means to run your code step by step in a debugging tool like Visual Studio, to find the exact point where you made a programming mistake. You then understand what corrections you need to make in your code and debugging tools often allow you to make temporary changes so you can continue running the program.