Feature support
What hollo can do, answered by contributors with sources.
Accounts and profiles
- Move to another server with followersYes
Source for Move to another server with followers (opens in a new tab)
- Accept followers moving inYes
- Export your dataYes
CSV export of follows, lists, mutes, blocks and bookmarks from the dashboard; posts are not exported.Since 0.4.0 Source for Export your data (opens in a new tab)
- Import follows, blocks and mutesYes
Since 0.4.0 Source for Import follows, blocks and mutes (opens in a new tab)
- Delete your own accountYes
- Two-factor authenticationYes
Since 0.2.0 Source for Two-factor authentication (opens in a new tab)
- Passkeys and security keysYes
Since 0.9.0 Source for Passkeys and security keys (opens in a new tab)
- Sign in with an external providerNo
Source for Sign in with an external provider (opens in a new tab)
- Profile metadata fieldsYes
- Verified profile linksNo
- Profile header imageYes
- Bot accountsYes
- Several identities under one loginYes
One dashboard login can create and manage several accounts on the same instance. Source for Several identities under one login (opens in a new tab)
Posting
- Edit published postsYes
- Content warningsYes
- Formatted text in postsYes
- Write in MarkdownYes
- Posts over 500 charactersYes
Since 0.6.0 Source for Posts over 500 characters (opens in a new tab)
- Admin-configurable post lengthNo
Source for Admin-configurable post length (opens in a new tab)
- PollsYes
- Scheduled postsNo
- DraftsUnknown
- Quote postsYes
- Control who can quote youYes
Since 0.9.0 Source for Control who can quote you (opens in a new tab)
- Control who can replyNo
- Custom emojiYes
- Post languageYes
- Pin posts to a profileYes
- Local-only postsNo
- Automatically delete old postsNo
Source for Automatically delete old posts (opens in a new tab)
- Long-form articlesNo
- HashtagsYes
- Link previewsYes
- Translate postsNo
Media
- Upload JPEG imagesYes
- Upload PNG imagesYes
- Upload animated GIFsPartial
GIFs are accepted but re-encoded with sharp without animation enabled, so only the first frame is kept. Source for Upload animated GIFs (opens in a new tab)
- Upload WebP imagesYes
- Upload HEIC imagesUnknown
- Upload AVIF imagesUnknown
- Upload MP4 videoYes
- Upload WebM videoYes
- Upload audioNo
- Several attachments per postYes
Source for Several attachments per post (opens in a new tab)
- More than four attachments per postYes
Up to 8 attachments per post. Source for More than four attachments per post (opens in a new tab)
- Image descriptions (alt text)Yes
Source for Image descriptions (alt text) (opens in a new tab)
- Image focal pointNo
- Sensitive mediaYes
- Removes location data from photosYes
EXIF metadata is stripped from images on upload.Since 0.6.0 Source for Removes location data from photos (opens in a new tab)
Video and audio
- Video transcodingNo
Interactions
- LikesYes
- BoostsYes
- Emoji reactionsYes
- Direct messagesYes
- Approve followers manuallyYes
- Follow hashtagsYes
- ListsYes
- BookmarksYes
- Join fediverse groupsUnknown
- Host groups or communitiesUnknown
- Interact from another serverUnknown
- EventsUnknown
Privacy and safety
- Followers-only postsYes
- Unlisted postsYes
- Block accountsYes
- Mute accountsYes
- Block whole servers (personal)No
Source for Block whole servers (personal) (opens in a new tab)
- Word filtersNo
- Hide follower and following listsPartial
Only the following list can be hidden; the followers list is always public.Since 0.9.0 Source for Hide follower and following lists (opens in a new tab)
- Choose whether posts are searchableNo
Source for Choose whether posts are searchable (opens in a new tab)
- Hide from search enginesNo
- Signed fetches required (secure mode)No
Source for Signed fetches required (secure mode) (opens in a new tab)
Moderation
- Report contentPartial
Reports are sent as Flag to the remote server; there is no local moderation queue on a single-user server.Since 0.2.0 Source for Report content (opens in a new tab)
- Forward reports to other serversPartial
Outgoing Flag reports are sent; incoming Flag activities are not handled. Source for Forward reports to other servers (opens in a new tab)
- Block servers (admin)No
- Limit serversNo
- Allowlist federationNo
- Import server blocklistsNo
- Approve sign-upsN/A
Single-user server without public sign up. Source for Approve sign-ups (opens in a new tab)
- Invite linksN/A
Single-user server without public sign up. Source for Invite links (opens in a new tab)
- CAPTCHA on sign upN/A
Single-user server without public sign up. Source for CAPTCHA on sign up (opens in a new tab)
- Moderation audit logUnknown
- Appeal moderation decisionsN/A
Single-user server without moderation tools. Source for Appeal moderation decisions (opens in a new tab)
- Custom content rulesNo
Discovery
- Full-text searchYes
Substring search using PostgreSQL ILIKE with search operators. Source for Full-text search (opens in a new tab)
- Trending contentNo
- Profile directoryUnknown
- Local timelineYes
- Federated timelineYes
- RSS feedsYes
Profiles have an Atom feed. Source for RSS feeds (opens in a new tab)
- Relay supportNo
Federation and protocols
- NodeInfoYes
- RFC 9421 HTTP signaturesYes
Via Fedify. Outbound deliveries currently try draft-cavage first, then RFC 9421. Source for RFC 9421 HTTP signatures (opens in a new tab)
- Object integrity proofsYes
Fedify adds FEP-8b32 proofs using the actor's Ed25519 key, which Hollo provides. Source for Object integrity proofs (opens in a new tab)
- Group federation (FEP-1b12)Unknown
- Fetches missing repliesYes
- Diaspora protocolUnknown
- Nomadic identityUnknown
- ActivityPub client-to-server APIUnknown
Apps and API
- Mastodon-compatible APIYes
Headless; works with Mastodon clients, some features vary by client. Source for Mastodon-compatible API (opens in a new tab)
- Official mobile appNo
- Installable web appUnknown
- Push notificationsNo
- WebhooksUnknown
- Documented APIUnknown
- Supports OAuth for the APIUnknown
Running a server
- Official Docker imageYes
- S3-compatible object storageYes
Source for S3-compatible object storage (opens in a new tab)
- PostgreSQLYes
- MySQL or MariaDBNo
- SQLiteNo
- Single-user modeYes
- Handles on a different domainYes
Since 0.9.0 Source for Handles on a different domain (opens in a new tab)
- Custom themes or CSSPartial
Only a per-account theme color for profile pages; no custom CSS. Source for Custom themes or CSS (opens in a new tab)
- Cleans up cached remote mediaYes
Since 0.8.0 Source for Cleans up cached remote media (opens in a new tab)
- Plugins or extensionsUnknown
Answers change through edits like the rest of this page, and show in the changelog. See all questions or suggest one.