1. It works with php allow_url_fopen = off
2. It can use joomlas "Intro image" or "Full article image" for the OG image tag.
I do not like that the plugin name and branding is added as a comment in the source code for the web site though. For a paid plugin this should be avoided.
Would be nice if it could support twitter card tags as well.
This comment is only the name of plugin used by our support for checking if open graph tags on customer site are generated by our plugin or some another. Our branding does not have any link-back, is not being indexed by search-bots and does not display to your site visitors. It does not have any influence on your site. But if you do not like to have a comment with plugin name then you can easily remove one line from source code.
We sell subscriptions with access to our software and not a copyrights.
Thank you for your positive reply.
At this moment plugin looks into introtext if image exists, if there is no image plugin takes it from fulltext.
You can send me more details about "full article image" on firstname.lastname@example.org or email@example.com. If it will be possible I will make update of plugin.