Glossary of key terms
Instance
An instance is an independent Mastodon server with its own rules, focus and community. Users create their account on a specific instance, but can still communicate with all other instances in the network. Each instance provides an open, freely selectable access point to the entire Mastodon network.
Mastodon post/tröt/toot
A Mastodon post is the basic type of content on the platform. It can contain text, images, videos or links and serves as a starting point for exchange and discussion. Some people also use the terms ‘toot’ or ‘tröt’, which refer to the trumpeting of a mastodon or an elephant.
Boost
A boost is the act of sharing an existing post. There is no algorithmic amplification or sorting. Content spreads along actual social and thematic connections. This ensures transparency regarding how and why posts gain reach.
Reply and Thread
A reply is a direct response to a single post. Several replies in succession form a thread. Threads are well suited to detailed explanations, background information or step-by-step procedures. They make complex content easy to follow.
Content warning
A content warning summarises a piece of content in a short description. Users decide for themselves whether they wish to view the content. Content warnings are a gesture of consideration and also help to clearly flag longer or very specific content.
Handle
A handle is the unique address of a Mastodon profile, for example @uniinnsbruck@social.uibk.ac.at. It indicates on which instance an account was created. Handles enable users to be found easily and are uniquely identified across the entire network.
Local timeline
The local timeline displays all public posts from your own instance. It provides an overview of the people, topics and conversations active there and makes the respective community visible.
Home Timeline
The Home Timeline displays posts from accounts you follow. It is not sorted or curated by an algorithm, but is based entirely on your own choices. This keeps the flow of messages clear, direct and easy to manage.
Lists
Lists are used to organise selected accounts by topic and view them separately from the Home Timeline. They are useful for keeping track of interests, projects or specific subject areas in a structured way.
Alt text
Alt text describes the content of an image in words, making it accessible to people with visual impairments. The use of alt text is widespread on Mastodon and contributes to accessibility and clarity.
Pinned posts
Pinned posts are posts that remain visible at the top of your profile. They are useful for making important notices, introductions or key information permanently accessible.