Sharing a link will show on every Facebook post a card thanks to the Facebook social graph metadata added to each ComboStrap page.
You can check the generated card before posting with the sharing debugger.
List of metadata
The following metadata's are used in the card:
You can see the image used for Facebook in the metadata manager.
If the value is grayed, this is the default value.
If you set an image, the image must be at a minimum of 200px by 200px. The best format is 524×274 as this is the card dimension. 1)
The default image is chosen via this algorithm:
You can set the following configuration:
|facebookDefautImage||the default image if no image is found||:logo-facebook.png|