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.

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": [
    "http://mastodon/users/hippo",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/2hBsxtthfOI",
  "published": "2025-10-23T11:08:38Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mastodon/users/hippo"
    ],
    "id": "http://pasture-one-actor/object/rT8EB4PV-Pk",
    "published": "2025-10-23T11:08:38Z",
    "content": "emoji base properties :cow1:",
    "tag": [
      {
        "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"
        }
      }
    ]
  }
}

mastodon

{
  "id": "115423164425408547",
  "created_at": "2025-10-23T11:08:38.000Z",
  "in_reply_to_id": null,
  "in_reply_to_account_id": null,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "language": null,
  "uri": "http://pasture-one-actor/object/rT8EB4PV-Pk",
  "url": "http://pasture-one-actor/object/rT8EB4PV-Pk",
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "edited_at": null,
  "favourited": false,
  "reblogged": false,
  "muted": false,
  "bookmarked": false,
  "content": "emoji base properties :cow1:",
  "filtered": [],
  "reblog": null,
  "account": {
    "id": "115423154430999947",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "bot": false,
    "discoverable": false,
    "indexable": false,
    "group": false,
    "created_at": "2025-10-23T00:00:00.000Z",
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "http://mastodon/avatars/original/missing.png",
    "avatar_static": "http://mastodon/avatars/original/missing.png",
    "header": "http://mastodon/headers/original/missing.png",
    "header_static": "http://mastodon/headers/original/missing.png",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 65,
    "last_status_at": "2025-10-23",
    "hide_collections": true,
    "emojis": [],
    "fields": []
  },
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "emojis": [
    {
      "shortcode": "cow1",
      "url": "http://localhost:2970/system/cache/custom_emojis/images/000/000/001/original/61b89b4cffb5c14f.png",
      "static_url": "http://localhost:2970/system/cache/custom_emojis/images/000/000/001/static/61b89b4cffb5c14f.png",
      "visible_in_picker": true
    }
  ],
  "quote": null,
  "card": null,
  "poll": null
}

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": [
    "http://mastodon/users/hippo",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/EF7OoU2Hpi4",
  "published": "2025-10-23T11:08:39Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mastodon/users/hippo"
    ],
    "id": "http://pasture-one-actor/object/xTwoy9cjSj4",
    "published": "2025-10-23T11:08:39Z",
    "content": "emoji minimal properties :cow2:",
    "tag": [
      {
        "type": "Emoji",
        "name": ":cow2:",
        "icon": {
          "url": "http://pasture-one-actor/assets/cow_emoji.png"
        }
      }
    ]
  }
}

mastodon

{
  "id": "115423164510577575",
  "created_at": "2025-10-23T11:08:39.000Z",
  "in_reply_to_id": null,
  "in_reply_to_account_id": null,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "language": null,
  "uri": "http://pasture-one-actor/object/xTwoy9cjSj4",
  "url": "http://pasture-one-actor/object/xTwoy9cjSj4",
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "edited_at": null,
  "favourited": false,
  "reblogged": false,
  "muted": false,
  "bookmarked": false,
  "content": "emoji minimal properties :cow2:",
  "filtered": [],
  "reblog": null,
  "account": {
    "id": "115423154430999947",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "bot": false,
    "discoverable": false,
    "indexable": false,
    "group": false,
    "created_at": "2025-10-23T00:00:00.000Z",
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "http://mastodon/avatars/original/missing.png",
    "avatar_static": "http://mastodon/avatars/original/missing.png",
    "header": "http://mastodon/headers/original/missing.png",
    "header_static": "http://mastodon/headers/original/missing.png",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 66,
    "last_status_at": "2025-10-23",
    "hide_collections": true,
    "emojis": [],
    "fields": []
  },
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "emojis": [
    {
      "shortcode": "cow2",
      "url": "http://localhost:2970/system/cache/custom_emojis/images/000/000/002/original/4a2b9203aff5c533.png",
      "static_url": "http://localhost:2970/system/cache/custom_emojis/images/000/000/002/static/4a2b9203aff5c533.png",
      "visible_in_picker": true
    }
  ],
  "quote": null,
  "card": null,
  "poll": null
}

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": [
    "http://mastodon/users/hippo",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/iHGKHUo4pUI",
  "published": "2025-10-23T11:08:40Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mastodon/users/hippo"
    ],
    "id": "http://pasture-one-actor/object/5q8pmryCtcY",
    "published": "2025-10-23T11:08:40Z",
    "content": "emoji with type of icon :cow3:",
    "tag": [
      {
        "type": "Emoji",
        "name": ":cow3:",
        "icon": {
          "type": "Image",
          "url": "http://pasture-one-actor/assets/cow_emoji.png"
        }
      }
    ]
  }
}

mastodon

{
  "id": "115423164566151738",
  "created_at": "2025-10-23T11:08:40.000Z",
  "in_reply_to_id": null,
  "in_reply_to_account_id": null,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "language": null,
  "uri": "http://pasture-one-actor/object/5q8pmryCtcY",
  "url": "http://pasture-one-actor/object/5q8pmryCtcY",
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "edited_at": null,
  "favourited": false,
  "reblogged": false,
  "muted": false,
  "bookmarked": false,
  "content": "emoji with type of icon :cow3:",
  "filtered": [],
  "reblog": null,
  "account": {
    "id": "115423154430999947",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "bot": false,
    "discoverable": false,
    "indexable": false,
    "group": false,
    "created_at": "2025-10-23T00:00:00.000Z",
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "http://mastodon/avatars/original/missing.png",
    "avatar_static": "http://mastodon/avatars/original/missing.png",
    "header": "http://mastodon/headers/original/missing.png",
    "header_static": "http://mastodon/headers/original/missing.png",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 67,
    "last_status_at": "2025-10-23",
    "hide_collections": true,
    "emojis": [],
    "fields": []
  },
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "emojis": [
    {
      "shortcode": "cow3",
      "url": "http://localhost:2970/system/cache/custom_emojis/images/000/000/003/original/da6aaee9556972ec.png",
      "static_url": "http://localhost:2970/system/cache/custom_emojis/images/000/000/003/static/da6aaee9556972ec.png",
      "visible_in_picker": true
    }
  ],
  "quote": null,
  "card": null,
  "poll": null
}

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": [
    "http://mastodon/users/hippo",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/koOc2WCh67s",
  "published": "2025-10-23T11:08:41Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mastodon/users/hippo"
    ],
    "id": "http://pasture-one-actor/object/BVUrMo7v0Tc",
    "published": "2025-10-23T11:08:41Z",
    "content": "emoji with inlined icon :cow4:",
    "tag": [
      {
        "type": "Emoji",
        "name": ":cow4:",
        "icon": "http://pasture-one-actor/assets/cow_emoji.png"
      }
    ]
  }
}

no result

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": [
    "http://mastodon/users/hippo",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/7oSmJ09LpDs",
  "published": "2025-10-23T11:08:56Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mastodon/users/hippo"
    ],
    "id": "http://pasture-one-actor/object/KlAB_rWKMSY",
    "published": "2025-10-23T11:08:56Z",
    "content": "emoji with id :cow5:",
    "tag": [
      {
        "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"
        }
      }
    ]
  }
}

mastodon

{
  "id": "115423165605068659",
  "created_at": "2025-10-23T11:08:56.000Z",
  "in_reply_to_id": null,
  "in_reply_to_account_id": null,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "language": null,
  "uri": "http://pasture-one-actor/object/KlAB_rWKMSY",
  "url": "http://pasture-one-actor/object/KlAB_rWKMSY",
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "edited_at": null,
  "favourited": false,
  "reblogged": false,
  "muted": false,
  "bookmarked": false,
  "content": "emoji with id :cow5:",
  "filtered": [],
  "reblog": null,
  "account": {
    "id": "115423154430999947",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "bot": false,
    "discoverable": false,
    "indexable": false,
    "group": false,
    "created_at": "2025-10-23T00:00:00.000Z",
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "http://mastodon/avatars/original/missing.png",
    "avatar_static": "http://mastodon/avatars/original/missing.png",
    "header": "http://mastodon/headers/original/missing.png",
    "header_static": "http://mastodon/headers/original/missing.png",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 68,
    "last_status_at": "2025-10-23",
    "hide_collections": true,
    "emojis": [],
    "fields": []
  },
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "emojis": [
    {
      "shortcode": "cow5",
      "url": "http://localhost:2970/system/cache/custom_emojis/images/000/000/004/original/03bccc1f0c9457bf.png",
      "static_url": "http://localhost:2970/system/cache/custom_emojis/images/000/000/004/static/03bccc1f0c9457bf.png",
      "visible_in_picker": true
    }
  ],
  "quote": null,
  "card": null,
  "poll": null
}

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": [
    "http://mastodon/users/hippo",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/-p9htBIciuI",
  "published": "2025-10-23T11:08:57Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mastodon/users/hippo"
    ],
    "id": "http://pasture-one-actor/object/g7-_bTYN-qg",
    "published": "2025-10-23T11:08:57Z",
    "content": "emoji with missing icon :cow6:",
    "tag": [
      {
        "type": "Emoji",
        "name": ":cow6:"
      }
    ]
  }
}

mastodon

{
  "id": "115423165655530182",
  "created_at": "2025-10-23T11:08:57.000Z",
  "in_reply_to_id": null,
  "in_reply_to_account_id": null,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "language": null,
  "uri": "http://pasture-one-actor/object/g7-_bTYN-qg",
  "url": "http://pasture-one-actor/object/g7-_bTYN-qg",
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "edited_at": null,
  "favourited": false,
  "reblogged": false,
  "muted": false,
  "bookmarked": false,
  "content": "emoji with missing icon :cow6:",
  "filtered": [],
  "reblog": null,
  "account": {
    "id": "115423154430999947",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "bot": false,
    "discoverable": false,
    "indexable": false,
    "group": false,
    "created_at": "2025-10-23T00:00:00.000Z",
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "http://mastodon/avatars/original/missing.png",
    "avatar_static": "http://mastodon/avatars/original/missing.png",
    "header": "http://mastodon/headers/original/missing.png",
    "header_static": "http://mastodon/headers/original/missing.png",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 69,
    "last_status_at": "2025-10-23",
    "hide_collections": true,
    "emojis": [],
    "fields": []
  },
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "emojis": [],
  "quote": null,
  "card": null,
  "poll": null
}

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": [
    "http://mastodon/users/hippo",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/XonUf6ZHC_o",
  "published": "2025-10-23T11:08:58Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mastodon/users/hippo"
    ],
    "id": "http://pasture-one-actor/object/EBn_T_ZKfVY",
    "published": "2025-10-23T11:08:58Z",
    "content": "emoji just id :cow:",
    "tag": [
      "http://pasture-one-actor/assets/cow_emoji.jsonap"
    ]
  }
}

mastodon

{
  "id": "115423165708836724",
  "created_at": "2025-10-23T11:08:58.000Z",
  "in_reply_to_id": null,
  "in_reply_to_account_id": null,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "language": null,
  "uri": "http://pasture-one-actor/object/EBn_T_ZKfVY",
  "url": "http://pasture-one-actor/object/EBn_T_ZKfVY",
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "edited_at": null,
  "favourited": false,
  "reblogged": false,
  "muted": false,
  "bookmarked": false,
  "content": "emoji just id :cow:",
  "filtered": [],
  "reblog": null,
  "account": {
    "id": "115423154430999947",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "bot": false,
    "discoverable": false,
    "indexable": false,
    "group": false,
    "created_at": "2025-10-23T00:00:00.000Z",
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "http://mastodon/avatars/original/missing.png",
    "avatar_static": "http://mastodon/avatars/original/missing.png",
    "header": "http://mastodon/headers/original/missing.png",
    "header_static": "http://mastodon/headers/original/missing.png",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 70,
    "last_status_at": "2025-10-23",
    "hide_collections": true,
    "emojis": [],
    "fields": []
  },
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "emojis": [],
  "quote": null,
  "card": null,
  "poll": null
}