Is there a max URL character length for one boxes?

[abrambailey]

I have a page here:

https://forum.hearingtracker.com/t/ces-2020-news-updates/49801

The bottom URL won’t convert to one box no matter what I do. Curious if it’s the URL length?

[Johani (Joe)]

The last link in that post is missing the og:description meta tag which is required for Discourse to onebox a link. The other links work because they have that tag present.

You can use http://debug.iframely.com to debug meta tags.

[abrambailey]

Thanks, and btw, that iframely site is really nice, thanks for sharing.