ActivityPub Viewer

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.

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{ "@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.bot/users/apod/statuses/114420096060766405", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-04-29T07:35:10Z", "url": "https://mastodon.bot/@apod/114420096060766405", "attributedTo": "https://mastodon.bot/users/apod", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.bot/users/apod/followers" ], "sensitive": false, "atomUri": "https://mastodon.bot/users/apod/statuses/114420096060766405", "inReplyToAtomUri": null, "conversation": "tag:mastodon.bot,2025-04-29:objectId=426724:objectType=Conversation", "content": "<p>APOD from 2025-04-29</p><p><a href=\"https://mastodon.bot/tags/Saturn\" class=\"mention hashtag\" rel=\"tag\">#<span>Saturn</span></a>&#39;s Rings Appear to Disappear</p><p>In 1610, Galileo mistook Saturn&#39;s rings for &quot;ears&quot; using a new <a href=\"https://mastodon.bot/tags/telescope\" class=\"mention hashtag\" rel=\"tag\">#<span>telescope</span></a>. By 1612, the rings vanished from view due to <a href=\"https://mastodon.bot/tags/Earth\" class=\"mention hashtag\" rel=\"tag\">#<span>Earth</span></a>&#39;s perspective. This cycle repeats every 15 years with Saturn&#39;s seasonal tilt. A photo comparison from Brazil illustrates this: clear rings in 2020, barely visible in 2025.</p><p>HD image at <a href=\"https://apod.nasa.gov/apod/ap250429.html#space\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">apod.nasa.gov/apod/ap250429.ht</span><span class=\"invisible\">ml#space</span></a> <a href=\"https://mastodon.bot/tags/astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>astronomy</span></a></p>", "contentMap": { "en": "<p>APOD from 2025-04-29</p><p><a href=\"https://mastodon.bot/tags/Saturn\" class=\"mention hashtag\" rel=\"tag\">#<span>Saturn</span></a>&#39;s Rings Appear to Disappear</p><p>In 1610, Galileo mistook Saturn&#39;s rings for &quot;ears&quot; using a new <a href=\"https://mastodon.bot/tags/telescope\" class=\"mention hashtag\" rel=\"tag\">#<span>telescope</span></a>. By 1612, the rings vanished from view due to <a href=\"https://mastodon.bot/tags/Earth\" class=\"mention hashtag\" rel=\"tag\">#<span>Earth</span></a>&#39;s perspective. This cycle repeats every 15 years with Saturn&#39;s seasonal tilt. A photo comparison from Brazil illustrates this: clear rings in 2020, barely visible in 2025.</p><p>HD image at <a href=\"https://apod.nasa.gov/apod/ap250429.html#space\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">apod.nasa.gov/apod/ap250429.ht</span><span class=\"invisible\">ml#space</span></a> <a href=\"https://mastodon.bot/tags/astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>astronomy</span></a></p>" }, "attachment": [ { "type": "Document", "mediaType": "image/jpeg", "url": "https://files.mastodon.bot/media_attachments/files/114/420/057/142/333/188/original/5d02e64591165439.jpg", "name": "Saturn's Rings Appear to Disappear", "blurhash": "UA8gvxxu01NGxu-;Rk9FM{WB%Mt7M{Rjjt%2", "width": 960, "height": 1332 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.bot/tags/saturn", "name": "#saturn" }, { "type": "Hashtag", "href": "https://mastodon.bot/tags/telescope", "name": "#telescope" }, { "type": "Hashtag", "href": "https://mastodon.bot/tags/earth", "name": "#earth" }, { "type": "Hashtag", "href": "https://mastodon.bot/tags/astronomy", "name": "#astronomy" } ], "replies": { "id": "https://mastodon.bot/users/apod/statuses/114420096060766405/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.bot/users/apod/statuses/114420096060766405/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.bot/users/apod/statuses/114420096060766405/replies", "items": [] } } }