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",
{
"ostatus": "http://ostatus.org#",
"atomUri": "ostatus:atomUri",
"inReplyToAtomUri": "ostatus:inReplyToAtomUri",
"conversation": "ostatus:conversation",
"sensitive": "as:sensitive",
"toot": "http://joinmastodon.org/ns#",
"votersCount": "toot:votersCount",
"blurhash": "toot:blurhash",
"focalPoint": {
"@container": "@list",
"@id": "toot:focalPoint"
},
"Hashtag": "as:Hashtag"
}
],
"id": "https://mastodon.org.uk/users/mkwadee/statuses/114534760982879078",
"type": "Note",
"summary": null,
"inReplyTo": "https://mastodon.org.uk/users/mkwadee/statuses/114534752786065617",
"published": "2025-05-19T13:35:58Z",
"url": "https://mastodon.org.uk/@mkwadee/114534760982879078",
"attributedTo": "https://mastodon.org.uk/users/mkwadee",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://mastodon.org.uk/users/mkwadee/followers"
],
"sensitive": false,
"atomUri": "https://mastodon.org.uk/users/mkwadee/statuses/114534760982879078",
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"conversation": "tag:mastodon.org.uk,2025-05-19:objectId=165375091:objectType=Conversation",
"content": "<p>Here we see three identical pendulums, oscillating independently. The red and purple ones are vibrating with small amplitudes and so their periods are nearly the same. But the blue one is undergoing what would be considered to be very large amplitude oscillations and has a significantly longer period. In fact, as the amplitude approaches π radians, the period increases without bound and approaches infinity.</p><p><a href=\"https://mastodon.org.uk/tags/MyWork\" class=\"mention hashtag\" rel=\"tag\">#<span>MyWork</span></a> <a href=\"https://mastodon.org.uk/tags/CCBYSA\" class=\"mention hashtag\" rel=\"tag\">#<span>CCBYSA</span></a> <a href=\"https://mastodon.org.uk/tags/Mathematics\" class=\"mention hashtag\" rel=\"tag\">#<span>Mathematics</span></a> <a href=\"https://mastodon.org.uk/tags/ClassicalMechanics\" class=\"mention hashtag\" rel=\"tag\">#<span>ClassicalMechanics</span></a> <a href=\"https://mastodon.org.uk/tags/AppliedMathematics\" class=\"mention hashtag\" rel=\"tag\">#<span>AppliedMathematics</span></a> <a href=\"https://mastodon.org.uk/tags/Physics\" class=\"mention hashtag\" rel=\"tag\">#<span>Physics</span></a> <a href=\"https://mastodon.org.uk/tags/Animation\" class=\"mention hashtag\" rel=\"tag\">#<span>Animation</span></a></p>",
"contentMap": {
"en": "<p>Here we see three identical pendulums, oscillating independently. The red and purple ones are vibrating with small amplitudes and so their periods are nearly the same. But the blue one is undergoing what would be considered to be very large amplitude oscillations and has a significantly longer period. In fact, as the amplitude approaches π radians, the period increases without bound and approaches infinity.</p><p><a href=\"https://mastodon.org.uk/tags/MyWork\" class=\"mention hashtag\" rel=\"tag\">#<span>MyWork</span></a> <a href=\"https://mastodon.org.uk/tags/CCBYSA\" class=\"mention hashtag\" rel=\"tag\">#<span>CCBYSA</span></a> <a href=\"https://mastodon.org.uk/tags/Mathematics\" class=\"mention hashtag\" rel=\"tag\">#<span>Mathematics</span></a> <a href=\"https://mastodon.org.uk/tags/ClassicalMechanics\" class=\"mention hashtag\" rel=\"tag\">#<span>ClassicalMechanics</span></a> <a href=\"https://mastodon.org.uk/tags/AppliedMathematics\" class=\"mention hashtag\" rel=\"tag\">#<span>AppliedMathematics</span></a> <a href=\"https://mastodon.org.uk/tags/Physics\" class=\"mention hashtag\" rel=\"tag\">#<span>Physics</span></a> <a href=\"https://mastodon.org.uk/tags/Animation\" class=\"mention hashtag\" rel=\"tag\">#<span>Animation</span></a></p>"
},
"updated": "2025-05-20T20:29:00Z",
"attachment": [
{
"type": "Document",
"mediaType": "video/mp4",
"url": "https://cdn.mastodon.org.uk/media_attachments/files/114/542/042/093/162/518/original/ada4d21543ccbfec.mp4",
"name": "Three nonlinear pendulums oscillating independently.",
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}
],
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},
{
"type": "Hashtag",
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"name": "#ccbysa"
},
{
"type": "Hashtag",
"href": "https://mastodon.org.uk/tags/mathematics",
"name": "#mathematics"
},
{
"type": "Hashtag",
"href": "https://mastodon.org.uk/tags/classicalmechanics",
"name": "#classicalmechanics"
},
{
"type": "Hashtag",
"href": "https://mastodon.org.uk/tags/appliedmathematics",
"name": "#appliedmathematics"
},
{
"type": "Hashtag",
"href": "https://mastodon.org.uk/tags/physics",
"name": "#physics"
},
{
"type": "Hashtag",
"href": "https://mastodon.org.uk/tags/animation",
"name": "#animation"
}
],
"replies": {
"id": "https://mastodon.org.uk/users/mkwadee/statuses/114534760982879078/replies",
"type": "Collection",
"first": {
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"next": "https://mastodon.org.uk/users/mkwadee/statuses/114534760982879078/replies?min_id=114535168273881734&page=true",
"partOf": "https://mastodon.org.uk/users/mkwadee/statuses/114534760982879078/replies",
"items": [
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}
},
"likes": {
"id": "https://mastodon.org.uk/users/mkwadee/statuses/114534760982879078/likes",
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},
"shares": {
"id": "https://mastodon.org.uk/users/mkwadee/statuses/114534760982879078/shares",
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}
}