Mastodon lets you edit your posts after they have been published:
- Go to one of your posts that you want to edit
- Click the ⋯ icon on the post
- Select “Edit”
This works on your server’s website, the official apps and third party apps. Third party apps may have a slightly different interface depending on which app you use.
When a post is edited, people who have interacted with it will receive a notification in case they want to change their interaction. There will also be a note on the post showing it has been edited along with links to previous versions so that others can see how it has changed. These measures together reduce the chance of anyone abusing the editing feature.
(There was a bug in the first version of editing which meant you couldn’t edit image descriptions. However, version 4.1.0 of the Mastodon server software fixed this.)