A small tool to view real-world ActivityPub objects as JSON! Enter a URL
or username from Mastodon or a similar service below, and we'll send a
request with
the right
Accept
header
to the server to view the underlying object.
{
"@context": [
"https://www.w3.org/ns/activitystreams",
"https://w3id.org/security/v1",
{
"manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
"toot": "http://joinmastodon.org/ns#",
"featured": {
"@id": "toot:featured",
"@type": "@id"
},
"featuredTags": {
"@id": "toot:featuredTags",
"@type": "@id"
},
"alsoKnownAs": {
"@id": "as:alsoKnownAs",
"@type": "@id"
},
"movedTo": {
"@id": "as:movedTo",
"@type": "@id"
},
"schema": "http://schema.org#",
"PropertyValue": "schema:PropertyValue",
"value": "schema:value",
"discoverable": "toot:discoverable",
"suspended": "toot:suspended",
"memorial": "toot:memorial",
"indexable": "toot:indexable",
"attributionDomains": {
"@id": "toot:attributionDomains",
"@type": "@id"
},
"focalPoint": {
"@container": "@list",
"@id": "toot:focalPoint"
}
}
],
"id": "https://mastodon.social/users/jknodlseder",
"type": "Person",
"following": "https://mastodon.social/users/jknodlseder/following",
"followers": "https://mastodon.social/users/jknodlseder/followers",
"inbox": "https://mastodon.social/users/jknodlseder/inbox",
"outbox": "https://mastodon.social/users/jknodlseder/outbox",
"featured": "https://mastodon.social/users/jknodlseder/collections/featured",
"featuredTags": "https://mastodon.social/users/jknodlseder/collections/tags",
"preferredUsername": "jknodlseder",
"name": "Dr. Jürgen Knödlseder",
"summary": "<p>I’m an astrophysicist working in the field of gamma-ray astronomy at IRAP (CNRS) in Toulouse, France.<br />Since a couple of years I’m also doing research on the environmental impact of scientific research (and of astrophysics in particular), and I’m engaged in @labos1point5 and @a4e.<br />I’m also doing local politics as city and community councillor with a strong focus on environmental politics.<br />Born at 320 ppm.</p>",
"url": "https://mastodon.social/@jknodlseder",
"manuallyApprovesFollowers": false,
"discoverable": true,
"indexable": true,
"published": "2025-05-30T00:00:00Z",
"memorial": false,
"alsoKnownAs": [
"https://astrodon.social/users/jknodlseder"
],
"publicKey": {
"id": "https://mastodon.social/users/jknodlseder#main-key",
"owner": "https://mastodon.social/users/jknodlseder",
"publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6aoPEogHlOV84HjhXCzQ\n0kHP9aP9T0pcEJy8Z6IuHgIdO+8Dguc4xQv//HlLV9kF24lAHZTW+lIufLX4LGxd\nJKYuYFtai44+rh95/+xqxF3PQ4zW6wdvZwNNWUX5+4rr2ZLEjGS0i5LW4CWyaE4i\nRjf1LWcD4PwSNRKRmz2JleSn2CRiTcVrPYGYIUll1Qff+FkosnC3nN2kcGafMpOk\nFjeK68yK1F6zhbIugLS98fgHHjxIzy7IjlPzPrO20wnmjEUPOAS+gukkWfWb7my0\n0+bKskHLDg5i1c+2296Sif4DJ6eyZr3UXgGBd6b7sOjAn935W9qy1k/pxy3LtS5I\nFwIDAQAB\n-----END PUBLIC KEY-----\n"
},
"tag": [],
"attachment": [
{
"type": "PropertyValue",
"name": "Hashtags",
"value": "<a href=\"https://mastodon.social/tags/astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>astronomy</span></a> <a href=\"https://mastodon.social/tags/astrophysics\" class=\"mention hashtag\" rel=\"tag\">#<span>astrophysics</span></a> <a href=\"https://mastodon.social/tags/climate\" class=\"mention hashtag\" rel=\"tag\">#<span>climate</span></a> <a href=\"https://mastodon.social/tags/environment\" class=\"mention hashtag\" rel=\"tag\">#<span>environment</span></a> <a href=\"https://mastodon.social/tags/degrowth\" class=\"mention hashtag\" rel=\"tag\">#<span>degrowth</span></a>"
},
{
"type": "PropertyValue",
"name": "Country",
"value": "France"
},
{
"type": "PropertyValue",
"name": "Toots in",
"value": "English, French, German"
},
{
"type": "PropertyValue",
"name": "GitHub",
"value": "<a href=\"https://github.com/jknodlseder\" target=\"_blank\" rel=\"nofollow noopener me\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">github.com/jknodlseder</span><span class=\"invisible\"></span></a>"
}
],
"endpoints": {
"sharedInbox": "https://mastodon.social/inbox"
},
"icon": {
"type": "Image",
"mediaType": "image/jpeg",
"url": "https://files.mastodon.social/accounts/avatars/114/597/497/774/414/562/original/2e8ca99c01a27e0c.jpeg"
},
"image": {
"type": "Image",
"mediaType": "image/png",
"url": "https://files.mastodon.social/accounts/headers/114/597/497/774/414/562/original/866346b33c27991e.png"
}
}