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/pomaranc/statuses/114595456872315749", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-05-30T06:51:43Z", "url": "https://mastodon.social/@pomaranc/114595456872315749", "attributedTo": "https://mastodon.social/users/pomaranc", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/pomaranc/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/pomaranc/statuses/114595456872315749", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2025-05-30:objectId=1010024062:objectType=Conversation", "content": "<p>Types of &quot;Holes&quot; in the Cosmos</p><p>Not all cosmic &quot;holes&quot; are the same — and they’re not just empty space.</p><p><a href=\"https://mastodon.social/tags/blackholes\" class=\"mention hashtag\" rel=\"tag\">#<span>blackholes</span></a> <a href=\"https://mastodon.social/tags/whiteholes\" class=\"mention hashtag\" rel=\"tag\">#<span>whiteholes</span></a> <a href=\"https://mastodon.social/tags/wormholes\" class=\"mention hashtag\" rel=\"tag\">#<span>wormholes</span></a> <a href=\"https://mastodon.social/tags/universe\" class=\"mention hashtag\" rel=\"tag\">#<span>universe</span></a> <a href=\"https://mastodon.social/tags/cosmos\" class=\"mention hashtag\" rel=\"tag\">#<span>cosmos</span></a> <a href=\"https://mastodon.social/tags/astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>astronomy</span></a> <a href=\"https://mastodon.social/tags/spacefacts\" class=\"mention hashtag\" rel=\"tag\">#<span>spacefacts</span></a> <a href=\"https://mastodon.social/tags/physics\" class=\"mention hashtag\" rel=\"tag\">#<span>physics</span></a></p>", "contentMap": { "sk": "<p>Types of &quot;Holes&quot; in the Cosmos</p><p>Not all cosmic &quot;holes&quot; are the same — and they’re not just empty space.</p><p><a href=\"https://mastodon.social/tags/blackholes\" class=\"mention hashtag\" rel=\"tag\">#<span>blackholes</span></a> <a href=\"https://mastodon.social/tags/whiteholes\" class=\"mention hashtag\" rel=\"tag\">#<span>whiteholes</span></a> <a href=\"https://mastodon.social/tags/wormholes\" class=\"mention hashtag\" rel=\"tag\">#<span>wormholes</span></a> <a href=\"https://mastodon.social/tags/universe\" class=\"mention hashtag\" rel=\"tag\">#<span>universe</span></a> <a href=\"https://mastodon.social/tags/cosmos\" class=\"mention hashtag\" rel=\"tag\">#<span>cosmos</span></a> <a href=\"https://mastodon.social/tags/astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>astronomy</span></a> <a href=\"https://mastodon.social/tags/spacefacts\" class=\"mention hashtag\" rel=\"tag\">#<span>spacefacts</span></a> <a href=\"https://mastodon.social/tags/physics\" class=\"mention hashtag\" rel=\"tag\">#<span>physics</span></a></p>" }, "attachment": [ { "type": "Document", "mediaType": "image/jpeg", "url": "https://files.mastodon.social/media_attachments/files/114/595/456/788/748/649/original/21abf73a2912cfd0.jpg", "name": null, "blurhash": "UH8;AiI,9WxvnLW=kFn$J#xIVsbcNZs:ogR%", "width": 1200, "height": 1500 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/blackholes", "name": "#blackholes" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/whiteholes", "name": "#whiteholes" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/wormholes", "name": "#wormholes" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/universe", "name": "#universe" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/cosmos", "name": "#cosmos" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/astronomy", "name": "#astronomy" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/SpaceFacts", "name": "#SpaceFacts" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/physics", "name": "#physics" } ], "replies": { "id": "https://mastodon.social/users/pomaranc/statuses/114595456872315749/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/pomaranc/statuses/114595456872315749/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/pomaranc/statuses/114595456872315749/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/pomaranc/statuses/114595456872315749/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mastodon.social/users/pomaranc/statuses/114595456872315749/shares", "type": "Collection", "totalItems": 2 } }