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Outgoing moves via account migration and incoming Move activities are both supported.

Incoming and outgoing moves; only followers are carried over.

CSV exports of following, followers, lists, blocks and mutes; no posts or media.

Follows, blocks, mutes, domain blocks, bookmarks, lists and filters.

Import of follows, blocks, mutes and lists exists but is off by default; admins enable it per role.

TOTP; not available when OIDC sign-in is used.

WebAuthn security keys work as a second factor after TOTP is enabled.

Security keys work as a second factor, not for passwordless sign in.

OIDC, SAML, CAS and LDAP via environment configuration.

OpenID Connect.

CAS, SAML and OpenID Connect via environment settings; LDAP is also supported.

Each login belongs to exactly one account.

Notes cannot be edited locally and incoming Note updates are skipped.

Formatting in posts from other servers is shown; local posts are plain text.

Rich text from other servers is rendered; local posts are plain text.

Markdown is an opt-in default post format.

Local posts are written as plain text.

MFM accepts some Markdown syntax such as bold, code, quotes and links, but it is not full Markdown.

Default limit is 5000 characters.

Default limit is 500 characters.

Limit is a hardcoded constant of 500.

Set statuses-max-chars in config.yaml.

Set with the MAX_TOOT_CHARS environment variable.

Limit is a hardcoded constant (3000). Additionally, there is a limit of 8192 characters for incoming posts, after which they get truncated without warning.

Only through the API and third-party apps; the web interface has no scheduler.

Only through the API and third-party apps; the web interface cannot schedule posts.

One scheduled note per user by default; admins can raise the limit per role.

Outgoing posts always mark quoting as author-only.

The interaction policy only covers quotes.

Old notes can be hidden or made followers-only automatically, but not deleted.

Local posts are always Note or Question; remote Articles are displayed.

Incoming Articles are shown in full, but local users cannot publish them.

Admin must configure DeepL or LibreTranslate.

Needs an admin to configure DeepL or LibreTranslate.

Needs an admin to set a DeepL API key.

GIFs are converted to looping MP4 (gifv).

Animated GIFs are converted to looping video.

Converted to JPEG on upload.

Converted to JPEG on upload.

Converted to JPEG on upload.

Converted to JPEG on upload.

MP3, FLAC and other formats via embedded ffmpeg.

Limit is 4 attachments per post.

Default limit is 6 per post.

Limit is 4 attachments per post.

Up to 16 files per note.

Best effort for images; EXIF is not removed from MP4 videos.

Images with EXIF get a re-encoded public copy without metadata; the original stays on the server.

Server only generates video thumbnails.

No EmojiReact handling; Misskey style reactions arrive as plain favourites.

EmojiReact activities are not handled; only announcements have reactions.

Channels exist but are local-only and do not federate.

Remote Events are shown as posts but cannot be created.

Called home visibility.

Instance mute hides a server for that person.

Crawlers are disallowed unless the account is both discoverable and indexable.

Always on: all incoming GET and POST requests must be signed.

Signatures are only checked on inbox POSTs.

Silenced instances.

Documented as experimental.

Enabled with the LIMITED_FEDERATION_MODE environment variable.

Import in CSV, JSON or plaintext, or subscribe to a list URL.

Sign-ups always require admin approval.

Docs say invites are not implemented yet.

Uses hCaptcha, a third-party service.

Uses hCaptcha, a third-party service.

Needs hCaptcha, reCAPTCHA, Turnstile or a self-hosted mCaptcha server.

Prohibited words reject notes and sensitive words force home visibility, for local and remote notes.

Needs Elasticsearch or OpenSearch; covers opted-in posts and posts you interacted with.

Only searches your own posts and replies to you.

Needs Elasticsearch or OpenSearch.

Note search is off by default and must be allowed per role; Meilisearch optional.

Opt-in per account; profile feeds only.

Per-user Atom and RSS feeds.

Inbound since 4.5; outbound as a fallback since 4.7.

Verifies incoming RFC 9421 signatures; outgoing requests use draft-cavage.

Signs and verifies draft-cavage signatures only.

Verifies incoming FEP-8b32 proofs; does not emit them.

Uses Linked Data Signatures, not FEP-8b32 proofs.

Only ActivityPub server-to-server is supported.

Only server-to-server ActivityPub is supported.

Not in Misskey; Sharkey adds it as a fork feature.

Docs point people to third-party clients such as Tusky and Feditext.

Hometown uses the Mastodon API documentation.

PostgreSQL only.

PostgreSQL only.

PostgreSQL only.

PostgreSQL only.

Extra Hometown themes plus admin custom CSS.

Admins set default light and dark themes; users can install themes.