AlfredG on "[Plugin: Z-URL Preview] Picture shows on back-end but not on frontend"

Hi,

For a lot of sites the picture is showing in the post on the backend. When I view the post on the frontend the image doesn't show in a lot of cases. Is that normal? Big websites like flickr and google Nik show fine.

Best regards,
Alfred.

https://wordpress.org/plugins/z-url-preview/