A new OpenGraph tag to warn Fediverse users if a linked article is longer than 500 characters.
Putting
<meta name="fediverse:long_article" content="true" />
on a web page will allow link previews to carry a warning if the linked article is excessively long (defined as greater than 500 characters). This will serve as a CW for users of microblog Fediverse projects (such as Mastodon) who may be distressed by longer articles.
Full documentation of this feature is provided in the post that you are now reading. Since it has been established that
fediverse
OpenGraph tags
can be unilaterally implemented by anybody, there is no need for an FEP or further discussion.