Wordpress Help, Site Support and Knowledge Base
When a post is shared on social media, such as Facebook, an image is generally shared, too–usually the first image within the post. Please note that this is different than the selecting a featured image. When using that feature, the image selected will only show up in the news-feed page, not the post itself. If you would like the same image to show up on both the news feed page–such as your homepage; or your news page (/news)–please read the steps below.
**Note: If no images are added to the post itself, Facebook will grab the first image it sees on the page.