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.social/users/setiinstitute/collections/featured", "type": "OrderedCollection", "totalItems": 1, "orderedItems": [ { "id": "https://mastodon.social/users/setiinstitute/statuses/114660608455057678", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-06-10T19:00:38Z", "url": "https://mastodon.social/@setiinstitute/114660608455057678", "attributedTo": "https://mastodon.social/users/setiinstitute", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/setiinstitute/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/setiinstitute/statuses/114660608455057678", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2025-06-10:objectId=1019687706:objectType=Conversation", "content": "<p>PRESS RELEASE: <a href=\"https://www.seti.org/press-release/unusual-stellar-nurseries-near-our-galaxys-center-puzzle-scientists\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">seti.org/press-release/unusual</span><span class=\"invisible\">-stellar-nurseries-near-our-galaxys-center-puzzle-scientists</span></a> </p><p>New research led by Dr. James De Buizer at the SETI Institute and Dr. Wanggi Lim at IPAC at Caltech revealed that, although the central part of our Galaxy has a much higher density of star-forming material than the rest of the Milky Way, in the Galactic Center, the current rate of formation of massive stars (those larger than 8 times the mass of our Sun) appears to be lower compared to the rest of the Galaxy.</p><p><a href=\"https://mastodon.social/tags/space\" class=\"mention hashtag\" rel=\"tag\">#<span>space</span></a> <a href=\"https://mastodon.social/tags/science\" class=\"mention hashtag\" rel=\"tag\">#<span>science</span></a> <a href=\"https://mastodon.social/tags/scicomm\" class=\"mention hashtag\" rel=\"tag\">#<span>scicomm</span></a></p>", "contentMap": { "en": "<p>PRESS RELEASE: <a href=\"https://www.seti.org/press-release/unusual-stellar-nurseries-near-our-galaxys-center-puzzle-scientists\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">seti.org/press-release/unusual</span><span class=\"invisible\">-stellar-nurseries-near-our-galaxys-center-puzzle-scientists</span></a> </p><p>New research led by Dr. James De Buizer at the SETI Institute and Dr. Wanggi Lim at IPAC at Caltech revealed that, although the central part of our Galaxy has a much higher density of star-forming material than the rest of the Milky Way, in the Galactic Center, the current rate of formation of massive stars (those larger than 8 times the mass of our Sun) appears to be lower compared to the rest of the Galaxy.</p><p><a href=\"https://mastodon.social/tags/space\" class=\"mention hashtag\" rel=\"tag\">#<span>space</span></a> <a href=\"https://mastodon.social/tags/science\" class=\"mention hashtag\" rel=\"tag\">#<span>science</span></a> <a href=\"https://mastodon.social/tags/scicomm\" class=\"mention hashtag\" rel=\"tag\">#<span>scicomm</span></a></p>" }, "attachment": [ { "type": "Document", "mediaType": "image/png", "url": "https://files.mastodon.social/media_attachments/files/114/660/608/318/110/206/original/2da3186dcd564387.png", "name": "SETI Institute logo. Text: New research revealed that, in the Galactic Center, the current rate of formation of massive stars appears to be lower compared to the rest of the Milky Way. Background image: A detailed infrared view of the Galactic Center region of our Milky Way Galaxy, labeled and referencing a portion 290 light years out from the center.", "blurhash": "UEB2T6-VR+sp0zoft7j[xuNuNGWBJ7NaoLoL", "width": 819, "height": 1024 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/space", "name": "#space" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/science", "name": "#science" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/scicomm", "name": "#scicomm" } ], "replies": { "id": "https://mastodon.social/users/setiinstitute/statuses/114660608455057678/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/setiinstitute/statuses/114660608455057678/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/setiinstitute/statuses/114660608455057678/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/setiinstitute/statuses/114660608455057678/likes", "type": "Collection", "totalItems": 11 }, "shares": { "id": "https://mastodon.social/users/setiinstitute/statuses/114660608455057678/shares", "type": "Collection", "totalItems": 7 } } ] }