How to Fix Facebook Incorrect Thumbnail Issue in WordPress
Choose Your Facebook Thumbnail with Yoast SEO Plugin
The Yoast SEO Plugin also comes with the ability to add a custom Facebook thumbnail to each individual post or page.
Simply install the Yoast SEO Plugin. After you’ve installed and activated, it’s time to set up a Facebook thumbnail into whatever post you want.
When writing a post, scroll down to the Yoast SEO meta box below the post editor and then click on the social tab. There you will see a button to upload a thumbnail image for Facebook.
Here’s what the Facebook thumbnail looks like for our how to start a blog article:
Using Facebook Debug Tool to Clear the Cache
If you have added the right thumbnail, and Facebook is still not showing the right thumbnail, then the issue is related to caching.
First you need to make sure that you clear page cache in WordPress.
After that, you need to reset the cache in Facebook using their debug tool.
The Facebook debug tool is the easiest way to troubleshoot Facebook thumbnail issues.
Simply copy the URL of your WordPress post and paste it in the debugger tool.
After that click on the Scrape Again button, and Facebook will update the thumbnail for your post. Sometimes, you may have to click the Scrape Again button twice.