Your WordPress site and the ActivityPub protocol are doing all the work. 🙂
There are no character limits for the posts your WordPress site sends to the Fediverse because your site has no character limit. Same with the supported syntax.
Each Fediverse client then decides how to display the content from the posts your site sent to the inbox of your followers. Most apps (like the Mastodon app, Tusky, or the Mastodon web interface) support basic HTML, so you can expect content to appear more or less like on your site.
You could, for example, insert block quotes:
you can follow my daveverse blog, which I write using WordLand, on Mastodon — @scripting.
http://scripting.com/2025/05/23.html#a151738
You could also mention other Fediverse users, like @davew, and they’ll get a notification in their app of choice.
Tags you add to your post are displayed as hashtags in your follower’s feed.
I wrote this post on my own WordPress site, in response to your ActivityPub-compatible WordPress post, and I mentioned your Mastodon account. You can consequently expect 2 mentions: one in the app you use for your Mastodon account, the other as a comment on your WordPress site (well, only you don’t display comments on your site!).
