Have you ever experienced an old featured image on your website page not changing when you share content on Facebook or Twitter?
Here is the solution to clear the Twitter or Facebook Card cache to show the right image
How to clear the Twitter or Facebook Card cache to show the right image
For Twitter Card Cache Clearing
Go to the Twitter Card Validator: https://cards-dev.twitter.com/validator (You need a Twitter account and to log in on Twitter to use this tool)
For Facebook Card Cache Clearing
Go to the Facebook tool here, called the Facebook Debugger: https://developers.facebook.com/tools/debug/