Images in Link Shares - Sharing - Documentation - Facebook for Developers
Describes how to specify image(s) in link shares, how to ensure they are displayed properly, how to update them and some caveats. (should be 40-180 characters, 150 recommended)
The og:image tag can be used to specify the URL of the image that appears when ... it will still display in the link page post, but the size will be much smaller. ... When content is shared for the first time, the Facebook crawler will scrape and ...