Thanks to Justoverclock for the idea!
HELP WANTED: The extension currently needs a token from a third party website and that service has limitations unless you pay for it. I am sure there is a way to do a small API point to do this within Flarum without having to rely on an external service. I could not find a way to do this myself but I am sure someone can help with this. If you want to collaborate, please contact me or feel free to fork the extension!
- Adds a card for links showing the title, description and icon.
composer require malago/flarum-linkpreview
composer update malago/flarum-linkpreview
php flarum cache:clear
Enable the extension.