HTML tags for article

Here we analyze, which types of HTML tags are allowed inside the content field of Article type objects. One should expect that a Note, i.e.

Represents a short written work typically less than a single paragraph in length.

see here, should not contain headings h1-h6 or embedded media, e.g. img.

Sanitizing fields is desired behavior as seen in Section B.10 of ActivityPub.

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/KjwZpRomOMA",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/F1pbeFi7tss",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/4EMjtIdsk2w",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/QtrHzROgusg",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/bLTHBd-mo24",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/-FUuURjYSQ8",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/KAQU4k4TSAk",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/2pyuyBWflpA",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/A-hFexBIk_c",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/Ux9eMrsDnKU",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/8joG1wG5its",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/RN9mfuGiLy8",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/jLkrZnCsMH4",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/5Qr88zcgIbQ",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/bP8DAVQa6AI",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/HVnLVyyN8Jk",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/8_jCnToi2iI",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/p9VADBdh0dA",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/i1TaHquVxuc",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/7dDrlK5p4q0",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/d3Yy1Z-pSAY",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/ORGvs6Yus-Y",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/_Y1txwRjgTU",
  "published": "2025-09-09T09:32:38Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/ouzdyQqk2cg",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/VDAaupRA9BY",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/VClOzFviJUk",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/MXy0vocwdx8",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/ySj5zsWcKkc",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/m_uH7uPjGT0",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/9Fq4PWNKe3Q",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/GTgUq1TllVI",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

Object 32

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<dl>\n  <dt>Beast of Bodmin</dt>\n  <dd>A large feline inhabiting Bodmin Moor.</dd>\n</dl>\n",
  "id": "http://actor.example/object/GvJcpdb4weY",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

Object 33

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<details>\n  <summary>Details</summary>\n  Something small enough to escape casual notice.\n</details>\n",
  "id": "http://actor.example/object/VLUSvZim_IY",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

Object 34

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "<table><tr><td>HTML tables</td></tr></table>",
  "id": "http://actor.example/object/7tWnhNK6rc4",
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Article"
}

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/UGpWQbn81x8",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<b>bold</b>",
    "id": "http://actor.example/object/ye2aaaEeeJY",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#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/hFTvxRolVhw",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<strong>strong</strong>",
    "id": "http://actor.example/object/eqm2xXTstkc",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#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/nL4h8-b6rZA",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<i>italic</i>",
    "id": "http://actor.example/object/53H1T8BwALY",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#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/Sv0kCyEYK0c",
  "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/LtuPZ1vSZtI",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#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/vkk10xHgha4",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<em>emphasis</em>",
    "id": "http://actor.example/object/xQhHN2c7W3Q",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#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/q3q9bKyHAEM",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<del>old</del><ins>new</ins>",
    "id": "http://actor.example/object/2_3mpD7yaVo",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#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/EEwOlJ4aCy8",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<s>stricken</s>",
    "id": "http://actor.example/object/bRzxaliXYaU",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#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/LC98QG5R9WQ",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<mark>mark</mark>",
    "id": "http://actor.example/object/uxOS98ePZaI",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 9

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/8qjVcCr2w-M",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "find <var>x</var> (a variable)",
    "id": "http://actor.example/object/txBAfOai6iA",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 10

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/qKhbaiiKNTY",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<ol><li>ordered</li></ol>",
    "id": "http://actor.example/object/J7WARBo8SNA",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 11

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/5uHFGK6fR5A",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<ul><li>unordered</li></ul>",
    "id": "http://actor.example/object/4M_dwfPLBpQ",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 12

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/yYlOq533bS4",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<h1>h1</h1>",
    "id": "http://actor.example/object/6-zvtJQJVGs",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 13

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/k3tpL8JF4jA",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<h2>h2</h2>",
    "id": "http://actor.example/object/RGljOHc5tnc",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 14

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/QSt244a5Bqc",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<h3>h3</h3>",
    "id": "http://actor.example/object/LWfR6TtfJ_c",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 15

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/2UWF1ZWJ92M",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<h4>h4</h4>",
    "id": "http://actor.example/object/QwNr6stdalc",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 16

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/18Bu5ySPXdM",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<h5>h5</h5>",
    "id": "http://actor.example/object/8Rknz6-8reU",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 17

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/qv-Gff-Jru8",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<h1>h1</h1><h2>h2</h2>",
    "id": "http://actor.example/object/q5gW90YWNqo",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 18

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/IUH1ixdAlwY",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<code>code</code>",
    "id": "http://actor.example/object/MIjmyM40UPM",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 19

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/w_lWX05bN-8",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<pre>pre</pre>",
    "id": "http://actor.example/object/kd5OO23-KAY",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 20

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/H_91bbcyueA",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<blockquote>blockquote</blockquote>",
    "id": "http://actor.example/object/X8iLSPabWdc",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 21

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/Ujuuae2piqQ",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "line<br/>break",
    "id": "http://actor.example/object/d9bm14CQq-c",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 22

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/ZaJR7QD-UOc",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<p>paragraph</p>",
    "id": "http://actor.example/object/a7pdrD8bGLU",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 23

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/SdkNQbWFKT8",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<small>small</small>",
    "id": "http://actor.example/object/S5HZJvCfles",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 24

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/JSpnHytyyFo",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<sup>sup</sup>",
    "id": "http://actor.example/object/zoxE5qjLCSo",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 25

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/VpRQQZOQ728",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<sub>sub</sub>",
    "id": "http://actor.example/object/BPZhQh143l0",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 26

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/PfFgBbF070g",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<a href='https://funfedi.dev'>funfedi</a>",
    "id": "http://actor.example/object/s9mim-192_I",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 27

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/MFoAb4qIoUI",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<script>alert('hi');</script>",
    "id": "http://actor.example/object/3q5Kd28s35s",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 28

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/4B41jH2yvLo",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<img src=\"http://pasture-one-actor/assets/nlnet.png\" alt=\"NLNET Logo\" />",
    "id": "http://actor.example/object/LTImx3MZmWE",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#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/-xFC0RWzuFo",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "wbr: Fernstra\u00dfen<wbr />bau<wbr />privat<wbr />finanzierungs<wbr />gesetz",
    "id": "http://actor.example/object/QmpFaQaTEYs",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 30

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/zXwdLEzPNkw",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "Audio <audio controls src=\"http://pasture-one-actor/assets/cow_moo.mp3\"></audio>",
    "id": "http://actor.example/object/maJEauV7Tpc",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 31

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/BoO3UZL6pGg",
  "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/juz2xekdVmc",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 32

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/Ggr3Iq3j_M4",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<dl>\n  <dt>Beast of Bodmin</dt>\n  <dd>A large feline inhabiting Bodmin Moor.</dd>\n</dl>\n",
    "id": "http://actor.example/object/rH_1UAF2UFM",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 33

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/3lJUTA9In9Q",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<details>\n  <summary>Details</summary>\n  Something small enough to escape casual notice.\n</details>\n",
    "id": "http://actor.example/object/D_SnzyEonXA",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}

Activity 34

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "actor": "http://actor.example",
  "id": "http://actor.example/activity/ODw11wI9eXo",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "<table><tr><td>HTML tables</td></tr></table>",
    "id": "http://actor.example/object/o1RwpKDA-nQ",
    "published": "2025-09-09T09:32:39Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Article"
  },
  "published": "2025-09-09T09:32:39Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://remote.example/"
  ],
  "type": "Create"
}