With the migration to #Mastodon 4, your public profile pages & posts are now #JavaScript pages.

In terms of #SEO (I know, not everyone cares about being found in Google), this will likely mean that it'll take a bit longer for your posts to be findable, since they're linked from your profile page, and that page has to be rendered in order to see the links. Slower servers might have more trouble: indexing might time out before it sees the content. (more)