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Emoji

Emojis are documented in FEP-9098

In the support table:

  • ✅ means Emoji parsed
  • - means Emoji not parsed
  • ❌ failed to process, i.e. no message received in the application.

Support Table Preview

content Object Activity
emoji base properties :cow1:
[
  {
    “type”: “Emoji”,
    “name”: “:cow1:”,
    “updated”: “2025-01-22T12:57:33Z”,
    “icon”: {
      “type”: “Image”,
      “mediaType”: “image/png”,
      “url”: “http://pasture-one-actor/assets/cow_emoji.png”
    }
  }
]
 Object Activity
emoji minimal properties 🐄
[
  {
    “type”: “Emoji”,
    “name”: “🐄”,
    “icon”: {
      “url”: “http://pasture-one-actor/assets/cow_emoji.png”
    }
  }
]
 Object Activity
emoji with type of icon :cow3:
[
  {
    “type”: “Emoji”,
    “name”: “:cow3:”,
    “icon”: {
      “type”: “Image”,
      “url”: “http://pasture-one-actor/assets/cow_emoji.png”
    }
  }
]
 Object Activity
emoji with inlined icon :cow4:
[
  {
    “type”: “Emoji”,
    “name”: “:cow4:”,
    “icon”: “http://pasture-one-actor/assets/cow_emoji.png”
  }
]
 Object Activity
emoji with id :cow5:
[
  {
    “id”: “http://pasture-one-actor/assets/cow_emoji.jsonap”,
    “type”: “Emoji”,
    “name”: “:cow5:”,
    “updated”: “2025-01-22T12:57:33Z”,
    “icon”: {
      “type”: “Image”,
      “mediaType”: “image/png”,
      “url”: “http://pasture-one-actor/assets/cow_emoji.png”
    }
  }
]
 Object Activity
emoji with missing icon :cow6:
[
  {
    “type”: “Emoji”,
    “name”: “:cow6:”
  }
]
 Object Activity
emoji just id 🐮
[
  “http://pasture-one-actor/assets/cow_emoji.jsonap”
]
 Object 🚨 Activity

Objects

Object 1

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "emoji base properties :cow1:",
  "id": "http://actor.example/object/meBgwN5Oxn8",
  "published": "2025-11-21T12:05:03Z",
  "tag": [
    {
      "icon": {
        "mediaType": "image/png",
        "type": "Image",
        "url": "http://pasture-one-actor/assets/cow_emoji.png"
      },
      "name": ":cow1:",
      "type": "Emoji",
      "updated": "2025-01-22T12:57:33Z"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Note"
}

Object 2

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "emoji minimal properties :cow2:",
  "id": "http://actor.example/object/7aKKJQ6oAZ0",
  "published": "2025-11-21T12:05:03Z",
  "tag": [
    {
      "icon": {
        "url": "http://pasture-one-actor/assets/cow_emoji.png"
      },
      "name": ":cow2:",
      "type": "Emoji"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Note"
}

Object 3

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "emoji with type of icon :cow3:",
  "id": "http://actor.example/object/9aynbqyH5XE",
  "published": "2025-11-21T12:05:03Z",
  "tag": [
    {
      "icon": {
        "type": "Image",
        "url": "http://pasture-one-actor/assets/cow_emoji.png"
      },
      "name": ":cow3:",
      "type": "Emoji"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Note"
}

Object 4

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "emoji with inlined icon :cow4:",
  "id": "http://actor.example/object/_m40oiu9gxE",
  "published": "2025-11-21T12:05:03Z",
  "tag": [
    {
      "icon": "http://pasture-one-actor/assets/cow_emoji.png",
      "name": ":cow4:",
      "type": "Emoji"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Note"
}

Object 5

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "emoji with id :cow5:",
  "id": "http://actor.example/object/SC9__2AlGzs",
  "published": "2025-11-21T12:05:03Z",
  "tag": [
    {
      "icon": {
        "mediaType": "image/png",
        "type": "Image",
        "url": "http://pasture-one-actor/assets/cow_emoji.png"
      },
      "id": "http://pasture-one-actor/assets/cow_emoji.jsonap",
      "name": ":cow5:",
      "type": "Emoji",
      "updated": "2025-01-22T12:57:33Z"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Note"
}

Object 6

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "emoji with missing icon :cow6:",
  "id": "http://actor.example/object/-8ojf1WWv5M",
  "published": "2025-11-21T12:05:03Z",
  "tag": [
    {
      "name": ":cow6:",
      "type": "Emoji"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Note"
}

Object 7

❌❌❌ does not obey schema ❌❌❌

'http://pasture-one-actor/assets/cow_emoji.jsonap' is not valid under any of the given schemas

Failed validating 'anyOf' in schema['properties']['tag']['items']:
    {'anyOf': [{'$ref': '#/$defs/Hashtag'},
               {'$ref': '#/$defs/Mention'},
               {'$ref': '#/$defs/ObjectLink'},
               {'additionalProperties': True, 'type': 'object'}]}

On instance['tag'][0]:
    'http://pasture-one-actor/assets/cow_emoji.jsonap'

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "attributedTo": "http://actor.example",
  "content": "emoji just id :cow:",
  "id": "http://actor.example/object/URhL38zElSA",
  "published": "2025-11-21T12:05:03Z",
  "tag": [
    "http://pasture-one-actor/assets/cow_emoji.jsonap"
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#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/4PW-CsRIFMc",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "emoji base properties :cow1:",
    "id": "http://actor.example/object/pcsdNM9Z_Gc",
    "published": "2025-11-21T12:05:03Z",
    "tag": [
      {
        "icon": {
          "mediaType": "image/png",
          "type": "Image",
          "url": "http://pasture-one-actor/assets/cow_emoji.png"
        },
        "name": ":cow1:",
        "type": "Emoji",
        "updated": "2025-01-22T12:57:33Z"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-11-21T12:05:03Z",
  "to": [
    "http://remote.example/",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "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/OefqfZbEtC0",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "emoji minimal properties :cow2:",
    "id": "http://actor.example/object/t4SE-9h5ehs",
    "published": "2025-11-21T12:05:03Z",
    "tag": [
      {
        "icon": {
          "url": "http://pasture-one-actor/assets/cow_emoji.png"
        },
        "name": ":cow2:",
        "type": "Emoji"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-11-21T12:05:03Z",
  "to": [
    "http://remote.example/",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "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/QCcuriLjTUI",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "emoji with type of icon :cow3:",
    "id": "http://actor.example/object/YABS7FVr8sE",
    "published": "2025-11-21T12:05:03Z",
    "tag": [
      {
        "icon": {
          "type": "Image",
          "url": "http://pasture-one-actor/assets/cow_emoji.png"
        },
        "name": ":cow3:",
        "type": "Emoji"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-11-21T12:05:03Z",
  "to": [
    "http://remote.example/",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "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/PVgYXHFbV5Y",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "emoji with inlined icon :cow4:",
    "id": "http://actor.example/object/dk45y2xTapE",
    "published": "2025-11-21T12:05:03Z",
    "tag": [
      {
        "icon": "http://pasture-one-actor/assets/cow_emoji.png",
        "name": ":cow4:",
        "type": "Emoji"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-11-21T12:05:03Z",
  "to": [
    "http://remote.example/",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "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/JEPv1XtOa9c",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "emoji with id :cow5:",
    "id": "http://actor.example/object/dPNb6jlMMMs",
    "published": "2025-11-21T12:05:03Z",
    "tag": [
      {
        "icon": {
          "mediaType": "image/png",
          "type": "Image",
          "url": "http://pasture-one-actor/assets/cow_emoji.png"
        },
        "id": "http://pasture-one-actor/assets/cow_emoji.jsonap",
        "name": ":cow5:",
        "type": "Emoji",
        "updated": "2025-01-22T12:57:33Z"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-11-21T12:05:03Z",
  "to": [
    "http://remote.example/",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "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/P-5__z5RMww",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "emoji with missing icon :cow6:",
    "id": "http://actor.example/object/gi_xRziN2Xo",
    "published": "2025-11-21T12:05:03Z",
    "tag": [
      {
        "name": ":cow6:",
        "type": "Emoji"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-11-21T12:05:03Z",
  "to": [
    "http://remote.example/",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "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/ZRxo9iBsMSU",
  "object": {
    "attributedTo": "http://actor.example",
    "content": "emoji just id :cow:",
    "id": "http://actor.example/object/7JL2XhRRaHc",
    "published": "2025-11-21T12:05:03Z",
    "tag": [
      "http://pasture-one-actor/assets/cow_emoji.jsonap"
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://remote.example/"
    ],
    "type": "Note"
  },
  "published": "2025-11-21T12:05:03Z",
  "to": [
    "http://remote.example/",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "type": "Create"
}