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Only following, muted and blocked account lists can be exported.

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

No self-service deletion; moderators can delete users.

Only TOTP second factors are supported.

Only local username and password login.

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

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

Uses MFM, a Markdown-like syntax with bold, italics, links, quotes and code but no lists or headings.

Default limit is 8192 characters.

Limit is a hardcoded constant (3000).

Set CharacterLimit in configuration.ini.

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

Only through Mastodon or Akkoma client apps; the built-in web frontend cannot schedule posts.

No server-side drafts.

Public posts are always open to quotes; there is no per-user setting.

Post language is not stored or federated.

Only through Mastodon or Akkoma client apps; the built-in web frontend cannot create local-only posts.

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

Preview cards are not generated.

Needs an admin to set a DeepL API key.

Needs an admin to configure DeepL, DeepLX or LibreTranslate.

Merged for the unreleased v2026.2-beta (needs a translation plugin). Not in 2026.1.x.

Animated images skip processing and keep their animation.

Accepted, but with the default ImageSharp processor it is stored as uploaded, so display depends on the browser.

Up to 16 files per note.

Up to 16 files per note.

Up to 16 attachments per post.

Focus support is still a TODO.

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

Skipped for images over 10 MB or 30 MP by default, and when image processing is disabled.

Server only generates video thumbnails.

Only images are processed; videos are stored as uploaded.

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

Called home visibility.

Called home visibility.

Called Home visibility.

Instance mute hides a server for that person.

Instance mute hides a server for that person.

Set through Mastodon client apps or the web API; the built-in web frontend has no setting.

Signatures are only checked on inbox POSTs.

Admins choose never, always or essential; users can override for their own data.

Silenced instances.

Silenced instances.

Set FederationMode = AllowList.

Registrations can only be Closed, Invite or Open.

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

Needs a third-party CAPTCHA service such as FriendlyCaptcha or hCaptcha.

Captcha support is still a TODO.

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

Reject and rewrite policies, extendable through plugins.

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

Per-user Atom and RSS feeds.

Per-user feeds; users can turn theirs off.

Signs and verifies draft-cavage signatures only.

Uses draft-cavage HTTP Signatures.

Supports optional LD Signatures, not FEP-8b32 proofs.

Listed under FEPs the project intends to support.

Release notes say remote replies are not fetched.

Experimental and off by default; admins enable it in configuration.ini.

Only server-to-server ActivityPub is supported.

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

Web Push for Mastodon client apps.

Images are published to the iceshrimp.dev container registry.

PostgreSQL only.

PostgreSQL only.

PostgreSQL only.

PostgreSQL only.

PostgreSQL only.

PostgreSQL only.

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

Admins can inject custom HTML such as CSS into every page; users can install themes.

Admins can set the favicon, banner and theme color; no custom CSS.