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Basic HTML tags

Here we analyze, which types of HTML tags are allowed inside the content field. Sanitizing fields is desired behavior as seen in Section B.10 of ActivityPub.

The ✅ means that the html tag was left unchanged. ❓ indicates the content was changed, by hovering over it, one can see into what.

❓ for misskey is due us not supporting checking markdown yet.

Examples

Example 1

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/y_4QLlhNh7s",
  "published": "2025-09-09T11:47:36Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/FxgkJv_6EgM",
    "published": "2025-09-09T11:47:36Z",
    "content": "<b>bold</b>"
  }
}
misskey
{
  "id": "acg1vwlcvoex000u",
  "createdAt": "2025-09-09T11:47:36.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "**bold**",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/FxgkJv_6EgM",
  "clippedCount": 0
}

Example 2

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/jqK4I_Lfqu4",
  "published": "2025-09-09T11:47:36Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/tX-tS9Fjzak",
    "published": "2025-09-09T11:47:36Z",
    "content": "<strong>strong</strong>"
  }
}
misskey
{
  "id": "acg1vwlcvoex000v",
  "createdAt": "2025-09-09T11:47:36.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "**strong**",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/tX-tS9Fjzak",
  "clippedCount": 0
}

Example 3

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/b6ynwq1_FDg",
  "published": "2025-09-09T11:47:37Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/n1sEE4tRbfM",
    "published": "2025-09-09T11:47:37Z",
    "content": "<i>italic</i>"
  }
}
misskey
{
  "id": "acg1vxd4voex000w",
  "createdAt": "2025-09-09T11:47:37.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "<i>italic</i>",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/n1sEE4tRbfM",
  "clippedCount": 0
}

Example 4

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/rGi-VPInfkQ",
  "published": "2025-09-09T11:47:38Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/bEyhfsq_I6o",
    "published": "2025-09-09T11:47:38Z",
    "content": "<em>emphasis</em>"
  }
}
misskey
{
  "id": "acg1vy4wvoex000x",
  "createdAt": "2025-09-09T11:47:38.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "<i>emphasis</i>",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/bEyhfsq_I6o",
  "clippedCount": 0
}

Example 5

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/b5mJga-9_IQ",
  "published": "2025-09-09T11:47:38Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/u7P7w1UQztg",
    "published": "2025-09-09T11:47:38Z",
    "content": "<s>stricken</s>"
  }
}
misskey
{
  "id": "acg1vy4wvoex000y",
  "createdAt": "2025-09-09T11:47:38.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "~~stricken~~",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/u7P7w1UQztg",
  "clippedCount": 0
}

Example 6

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/DZlOMkujRF4",
  "published": "2025-09-09T11:47:39Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/l32Ed-DSRdY",
    "published": "2025-09-09T11:47:39Z",
    "content": "<ol><li>ordered</li></ol>"
  }
}
misskey
{
  "id": "acg1vywovoex000z",
  "createdAt": "2025-09-09T11:47:39.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "ordered",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/l32Ed-DSRdY",
  "clippedCount": 0
}

Example 7

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/_f_quR8DB_Y",
  "published": "2025-09-09T11:47:40Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/m5d6wpHQCTw",
    "published": "2025-09-09T11:47:40Z",
    "content": "<ul><li>unordered</li></ul>"
  }
}
misskey
{
  "id": "acg1vzogvoex0010",
  "createdAt": "2025-09-09T11:47:40.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "unordered",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/m5d6wpHQCTw",
  "clippedCount": 0
}

Example 8

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/glEB9-lilqA",
  "published": "2025-09-09T11:47:41Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/f3nj5lTwBWo",
    "published": "2025-09-09T11:47:41Z",
    "content": "<h1>h1</h1>"
  }
}
misskey
{
  "id": "acg1w0g8voex0011",
  "createdAt": "2025-09-09T11:47:41.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "\u3010h1\u3011",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/f3nj5lTwBWo",
  "clippedCount": 0
}

Example 9

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/M5z14zl7tRI",
  "published": "2025-09-09T11:47:41Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/Jr_LfX_EzVc",
    "published": "2025-09-09T11:47:41Z",
    "content": "<h2>h2</h2>"
  }
}
misskey
{
  "id": "acg1w0g8voex0012",
  "createdAt": "2025-09-09T11:47:41.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "h2",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/Jr_LfX_EzVc",
  "clippedCount": 0
}

Example 10

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/BD7TPCMTg7w",
  "published": "2025-09-09T11:47:42Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/jjcytD6me1Y",
    "published": "2025-09-09T11:47:42Z",
    "content": "<h3>h3</h3>"
  }
}
misskey
{
  "id": "acg1w180voex0013",
  "createdAt": "2025-09-09T11:47:42.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "h3",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/jjcytD6me1Y",
  "clippedCount": 0
}

Example 11

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/_dalqNkGQCQ",
  "published": "2025-09-09T11:47:43Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/7LWc0Awj4Xs",
    "published": "2025-09-09T11:47:43Z",
    "content": "<h4>h4</h4>"
  }
}
misskey
{
  "id": "acg1w1zsvoex0014",
  "createdAt": "2025-09-09T11:47:43.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "h4",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/7LWc0Awj4Xs",
  "clippedCount": 0
}

Example 12

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/YHunw8TtWhg",
  "published": "2025-09-09T11:47:43Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/kTm6Om-NE_4",
    "published": "2025-09-09T11:47:43Z",
    "content": "<h5>h5</h5>"
  }
}
misskey
{
  "id": "acg1w1zsvoex0015",
  "createdAt": "2025-09-09T11:47:43.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "h5",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/kTm6Om-NE_4",
  "clippedCount": 0
}

Example 13

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/xhlLAfZ6Wg8",
  "published": "2025-09-09T11:47:44Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/_jHvz56h_Ds",
    "published": "2025-09-09T11:47:44Z",
    "content": "<code>code</code>"
  }
}
misskey
{
  "id": "acg1w2rkvoex0016",
  "createdAt": "2025-09-09T11:47:44.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "`code`",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/_jHvz56h_Ds",
  "clippedCount": 0
}

Example 14

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/416A1AoX-yY",
  "published": "2025-09-09T11:47:45Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/PgDvWWQmVdc",
    "published": "2025-09-09T11:47:45Z",
    "content": "<pre>pre</pre>"
  }
}
misskey
{
  "id": "acg1w3jcvoex0017",
  "createdAt": "2025-09-09T11:47:45.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "pre",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/PgDvWWQmVdc",
  "clippedCount": 0
}

Example 15

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/3zBnRGqjPjw",
  "published": "2025-09-09T11:47:45Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/tjlqB3fbVTs",
    "published": "2025-09-09T11:47:45Z",
    "content": "<blockquote>blockquote</blockquote>"
  }
}
misskey
{
  "id": "acg1w3jcvoex0018",
  "createdAt": "2025-09-09T11:47:45.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "> blockquote",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/tjlqB3fbVTs",
  "clippedCount": 0
}

Example 16

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/wS-1t8in8Fk",
  "published": "2025-09-09T11:47:46Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/-_tVqdYTTGo",
    "published": "2025-09-09T11:47:46Z",
    "content": "line<br>break"
  }
}
misskey
{
  "id": "acg1w4b4voex0019",
  "createdAt": "2025-09-09T11:47:46.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "line\nbreak",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/-_tVqdYTTGo",
  "clippedCount": 0
}

Example 17

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/mhBgYBveOMs",
  "published": "2025-09-09T11:47:47Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/8A7yjM5PrPI",
    "published": "2025-09-09T11:47:47Z",
    "content": "<p>paragraph</p>"
  }
}
misskey
{
  "id": "acg1w52wvoex001a",
  "createdAt": "2025-09-09T11:47:47.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "paragraph",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/8A7yjM5PrPI",
  "clippedCount": 0
}

Example 18

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/v-MeYOpKUHQ",
  "published": "2025-09-09T11:47:47Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/J509mQE1-OU",
    "published": "2025-09-09T11:47:47Z",
    "content": "<small>small</small>"
  }
}
misskey
{
  "id": "acg1w52wvoex001b",
  "createdAt": "2025-09-09T11:47:47.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "<small>small</small>",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/J509mQE1-OU",
  "clippedCount": 0
}

Example 19

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/dG09cic0oP4",
  "published": "2025-09-09T11:47:48Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/gYAB3ToJGJY",
    "published": "2025-09-09T11:47:48Z",
    "content": "<sup>sup</sup>"
  }
}
misskey
{
  "id": "acg1w5uovoex001c",
  "createdAt": "2025-09-09T11:47:48.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "sup",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactionCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture-one-actor/object/gYAB3ToJGJY",
  "clippedCount": 0
}

Example 20

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/acg1try90vrs0003"
  ],
  "id": "http://pasture-one-actor/activity/knedW-lIAbs",
  "published": "2025-09-09T11:47:49Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/acg1try90vrs0003"
    ],
    "id": "http://pasture-one-actor/object/pnA11G6NKtQ",
    "published": "2025-09-09T11:47:49Z",
    "content": "<sub>sub</sub>"
  }
}
misskey
{
  "id": "acg1w6mgvoex001d",
  "createdAt": "2025-09-09T11:47:49.000Z",
  "userId": "acg1vki1voex0003",
  "user": {
    "id": "acg1vki1voex0003",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture-one-actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture-one-actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "sub",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
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