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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.

Due to firefish using markdown to format their content, the displayed result in the details table can be a bit off, please consult the example.

Objects

Object 1

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<b>bold</b>",
  "id": "http://actor.example/object/eCTQlsvGKt8",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 2

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<strong>strong</strong>",
  "id": "http://actor.example/object/sJbb1efX9eI",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 3

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<i>italic</i>",
  "id": "http://actor.example/object/9XgKIsSUU68",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 4

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<i>italic with.</i> See <a href=\"https://codeberg.org/helge/funfedidev/issues/142\">Issue 142</a>",
  "id": "http://actor.example/object/HOOOnuLZCWw",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 5

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<em>emphasis</em>",
  "id": "http://actor.example/object/iTj3g1yul6A",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 6

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<del>old</del><ins>new</ins>",
  "id": "http://actor.example/object/nm89Z13TUVM",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 7

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<s>stricken</s>",
  "id": "http://actor.example/object/fUiG3jOTjsM",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 8

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<mark>mark</mark>",
  "id": "http://actor.example/object/95FuyTwL5r0",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 9

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "find <var>x</var> (a variable)",
  "id": "http://actor.example/object/yxbt-LRe-g8",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 10

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<ol><li>ordered</li></ol>",
  "id": "http://actor.example/object/FHu_vE6QNGA",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 11

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<ul><li>unordered</li></ul>",
  "id": "http://actor.example/object/u92SsJPkBec",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 12

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<h1>h1</h1>",
  "id": "http://actor.example/object/4lZZjIHdCh0",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 13

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<h2>h2</h2>",
  "id": "http://actor.example/object/pHk4VqJYyCE",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 14

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<h3>h3</h3>",
  "id": "http://actor.example/object/yYzUAFt1UxA",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 15

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<h4>h4</h4>",
  "id": "http://actor.example/object/X6Vih6Ei_hs",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 16

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<h5>h5</h5>",
  "id": "http://actor.example/object/27JmAhSLJTw",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 17

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<h1>h1</h1><h2>h2</h2>",
  "id": "http://actor.example/object/zucL5ruz3Xk",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 18

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<code>code</code>",
  "id": "http://actor.example/object/E3GS-WWSDP4",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 19

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<pre>pre</pre>",
  "id": "http://actor.example/object/ET5XfYKzm3A",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 20

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<blockquote>blockquote</blockquote>",
  "id": "http://actor.example/object/r9gfeWKmTZM",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 21

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "line<br/>break",
  "id": "http://actor.example/object/pjVvCtFsO2I",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 22

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<p>paragraph</p>",
  "id": "http://actor.example/object/Z3a2wUYH7cU",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 23

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<small>small</small>",
  "id": "http://actor.example/object/_4ddFNt_I6M",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 24

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<sup>sup</sup>",
  "id": "http://actor.example/object/WLJu3fKhmUY",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 25

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<sub>sub</sub>",
  "id": "http://actor.example/object/pzyxnYxoPhg",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 26

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<a href='https://funfedi.dev'>funfedi</a>",
  "id": "http://actor.example/object/OP7w7oEnPL4",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 27

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<script>alert('hi');</script>",
  "id": "http://actor.example/object/X0fmMkKDryM",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 28

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<img src=\"http://pasture-one-actor/assets/nlnet.png\" alt=\"NLNET Logo\" />",
  "id": "http://actor.example/object/o8-T1RCR2Y0",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 29

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "wbr: Fernstra\u00dfen<wbr />bau<wbr />privat<wbr />finanzierungs<wbr />gesetz",
  "id": "http://actor.example/object/Lqt4nhWF3rI",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 30

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "Audio <audio controls src=\"http://pasture-one-actor/assets/cow_moo.mp3\"></audio>",
  "id": "http://actor.example/object/CP2R0iKnQaU",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Object 31

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "Video <video controls width=\"250\">\n  <source src=\"http://pasture-one-actor/assets/cow_eating.mp4\" type=\"video/mp4\" />\n  Video of a cow eating</video>",
  "id": "http://actor.example/object/itAJ6PNf4uc",
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public"
  ],
  "type": "Note"
}

Activities

Activity 1

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/8HfLbPgUfDk",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<b>bold</b>",
    "id": "http://actor.example/object/xE2Bzs2ppw0",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 2

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/PTJ20YXuRz0",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<strong>strong</strong>",
    "id": "http://actor.example/object/VHa56OdAYrc",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 3

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/vqWu6w0ObaA",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<i>italic</i>",
    "id": "http://actor.example/object/dQRWquMRPCo",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 4

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/fSLZeQBWeOc",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<i>italic with.</i> See <a href=\"https://codeberg.org/helge/funfedidev/issues/142\">Issue 142</a>",
    "id": "http://actor.example/object/fU80OhFK_PA",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 5

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/68JlHxXkwls",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<em>emphasis</em>",
    "id": "http://actor.example/object/tdAeCfxv5yU",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 6

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/-FPX1fQAUYk",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<del>old</del><ins>new</ins>",
    "id": "http://actor.example/object/Z-YsD_BYTsE",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 7

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/rEG1773rhRw",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<s>stricken</s>",
    "id": "http://actor.example/object/2vVI2xwvQN4",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 8

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/OUfGzw2HBsY",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<mark>mark</mark>",
    "id": "http://actor.example/object/3wdIHe-tr24",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 9

{
  "@context": [
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    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/4h3aE7PtDQo",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "find <var>x</var> (a variable)",
    "id": "http://actor.example/object/p-wgXodApYE",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 10

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  "object": {
    "attributedTo": "http://actor.example",
    "content": "<ol><li>ordered</li></ol>",
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    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
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    "as:Public",
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Activity 11

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  "id": "http://actor.example/activity/_MfrUlVoWSM",
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    "content": "<ul><li>unordered</li></ul>",
    "id": "http://actor.example/object/199vUOvUAZU",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
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Activity 12

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    "content": "<h1>h1</h1>",
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    "published": "2025-08-15T08:43:29Z",
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      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
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    "as:Public",
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Activity 13

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    "content": "<h2>h2</h2>",
    "id": "http://actor.example/object/6nbag6GWKJg",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
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    "http://remote.example/"
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  "type": "Create"
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Activity 14

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  "object": {
    "attributedTo": "http://actor.example",
    "content": "<h3>h3</h3>",
    "id": "http://actor.example/object/BZxxSsvDGCY",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
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  "type": "Create"
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Activity 15

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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/FsiGNiOSku0",
  "object": {
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    "content": "<h4>h4</h4>",
    "id": "http://actor.example/object/z4p79uQ3v7I",
    "published": "2025-08-15T08:43:29Z",
    "to": [
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      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
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    "http://remote.example/"
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  "type": "Create"
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Activity 16

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    {
      "Hashtag": "as:Hashtag",
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/gkvAsGYqiQ0",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<h5>h5</h5>",
    "id": "http://actor.example/object/1BWkIuv0tQs",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
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  "type": "Create"
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Activity 17

{
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    {
      "Hashtag": "as:Hashtag",
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/sMkIrwOGWBA",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<h1>h1</h1><h2>h2</h2>",
    "id": "http://actor.example/object/I9G7ycTvrRc",
    "published": "2025-08-15T08:43:29Z",
    "to": [
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      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
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Activity 18

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  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/KOzh_SAgROs",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<code>code</code>",
    "id": "http://actor.example/object/cyrenum25bw",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 19

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  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/4yA-WLV1m00",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<pre>pre</pre>",
    "id": "http://actor.example/object/erTse_If10E",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 20

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/Fh95jk6XXKY",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<blockquote>blockquote</blockquote>",
    "id": "http://actor.example/object/6htNNA3g720",
    "published": "2025-08-15T08:43:29Z",
    "to": [
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      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
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  "type": "Create"
}

Activity 21

{
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    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/NcHyzToyiI0",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "line<br/>break",
    "id": "http://actor.example/object/9QWgTbaH-i0",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 22

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/-7oxouLCoiM",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<p>paragraph</p>",
    "id": "http://actor.example/object/eS9Syyq0kkg",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 23

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/XjMwY83Y8Ac",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<small>small</small>",
    "id": "http://actor.example/object/mBlDQh5tha4",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 24

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/BV4QXdpJmgU",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<sup>sup</sup>",
    "id": "http://actor.example/object/AW3lVd_I6RI",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
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    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 25

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  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/JNiXwBN0mxo",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<sub>sub</sub>",
    "id": "http://actor.example/object/Fitx7h2HGkI",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 26

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  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/mk8ce-ragVo",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<a href='https://funfedi.dev'>funfedi</a>",
    "id": "http://actor.example/object/gzkoNOkjOd4",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
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  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 27

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/1mMBggbMeO4",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<script>alert('hi');</script>",
    "id": "http://actor.example/object/n9tNXEj-vA4",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 28

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/D5cT-OFUQqQ",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<img src=\"http://pasture-one-actor/assets/nlnet.png\" alt=\"NLNET Logo\" />",
    "id": "http://actor.example/object/NqGu8NYJpAQ",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 29

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/1igNIFEIM8A",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "wbr: Fernstra\u00dfen<wbr />bau<wbr />privat<wbr />finanzierungs<wbr />gesetz",
    "id": "http://actor.example/object/ICpKVlT26c8",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 30

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
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  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/dmLjzbnOx1U",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "Audio <audio controls src=\"http://pasture-one-actor/assets/cow_moo.mp3\"></audio>",
    "id": "http://actor.example/object/mzSL41EzA-o",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 31

{
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    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
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  "actor": "http://actor.example",
  "id": "http://actor.example/activity/QRzJkg89lu0",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "Video <video controls width=\"250\">\n  <source src=\"http://pasture-one-actor/assets/cow_eating.mp4\" type=\"video/mp4\" />\n  Video of a cow eating</video>",
    "id": "http://actor.example/object/iOsrFrxF-Is",
    "published": "2025-08-15T08:43:29Z",
    "to": [
      "as:Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-08-15T08:43:29Z",
  "to": [
    "as:Public",
    "http://remote.example/"
  ],
  "type": "Create"
}