Support OGP previews with missing title attribute?
OpenGraph allegedly requires four pieces of metadata for the preview:
og:title
og:type
og:image
og:url
source: http://ogp.me
It seems like the real world disagrees. I've noticed on some webcomics. Example:
https://opengraphcheck.com/result.php?url=https%3A%2F%2Fwww.smbc-comics.com%2Fcomic%2Fconscious-2
They're only providing og:image
and og:description