If I post the following URL in to a Trello card, it is treated as link (i.e. tappable) but no site preview appears. Thus, the card looks like text.
Is there something special I need to do?
Thank you for any help.
Other URLs work fine, show previews.
I'm using Trello in Safari 14.1, macOS 11.3.1
Not all links will offer previews at the moment, it's based a bit on the types of services supported by the Atlassian Smart Link platform. There's a bit more detail on that over in this community post: https://community.atlassian.com/t5/Confluence-articles/Loads-of-awesome-new-Smart-Links-now-available-in-Confluence/ba-p/1621121
If the service isn't in that list, then the link would appear blue (and clickable) as you've mentioned, but wouldn't offer a preview on the card's front.