Pinned posts are posts that appear at the top of your profile page, above your normal posts. Many people use them as introductions, but they can be used for any purpose, for example artists often use them as mini-portfolios with images, video or audio attached.
To pin a post on Mastodon:
- Log in through your server’s website or a third party app (the official app doesn’t support pinning yet)
- Go to one of your own posts that you want to pin, click the ⋯ icon on the post and select Pin to profile.
- The post will now be pinned to your profile. To unpin it, click ⋯ on the post and select Unpin.
You can pin up to five posts at once on your Mastodon profile. To change the order of pinned posts, unpin a post and repin it to place it higher up the list.
Pinned posts will be the first thing people see when they look at your profile, and for various technical reasons pinned posts will be more widely seen on the Fediverse than normal posts.
(For technical people interested in this topic, Mastodon servers which encounter your account for the first time will automatically “backfill” all pinned posts on your profile.)