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://helmholtz.social/users/helmholtz/statuses/114545006621939127", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-05-21T09:01:34Z", "url": "https://helmholtz.social/@helmholtz/114545006621939127", "attributedTo": "https://helmholtz.social/users/helmholtz", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://helmholtz.social/users/helmholtz/followers", "https://helmholtz.social/users/DESY", "https://helmholtz.social/users/HZDR" ], "sensitive": false, "atomUri": "https://helmholtz.social/users/helmholtz/statuses/114545006621939127", "inReplyToAtomUri": null, "conversation": "tag:helmholtz.social,2025-05-21:objectId=7884003:objectType=Conversation", "content": "<p>XFEL, PETRA III, BESSY II, ELBE, FLASH –<br />nein, das sind keine neuen Marvel-Held:innen.<br />Aber sie machen das Unsichtbare sichtbar.</p><p><span class=\"h-card\" translate=\"no\"><a href=\"https://helmholtz.social/@DESY\" class=\"u-url mention\">@<span>DESY</span></a></span>, <a href=\"https://helmholtz.social/tags/HZB\" class=\"mention hashtag\" rel=\"tag\">#<span>HZB</span></a> und <span class=\"h-card\" translate=\"no\"><a href=\"https://helmholtz.social/@HZDR\" class=\"u-url mention\">@<span>HZDR</span></a></span> entwickeln die Lichtquellen der Zukunft – mit Teilchenbeschleunigern.</p><p>Mehr dazu: <a href=\"https://www.helmholtz.de/ueber-uns/helmholtz-stories/story/story-06/?mtm_campaign=30Jahre30Stories&amp;mtm_source=Mastodon-Story6\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">helmholtz.de/ueber-uns/helmhol</span><span class=\"invisible\">tz-stories/story/story-06/?mtm_campaign=30Jahre30Stories&amp;mtm_source=Mastodon-Story6</span></a> <a href=\"https://helmholtz.social/tags/Helmholtz30\" class=\"mention hashtag\" rel=\"tag\">#<span>Helmholtz30</span></a></p>", "contentMap": { "de": "<p>XFEL, PETRA III, BESSY II, ELBE, FLASH –<br />nein, das sind keine neuen Marvel-Held:innen.<br />Aber sie machen das Unsichtbare sichtbar.</p><p><span class=\"h-card\" translate=\"no\"><a href=\"https://helmholtz.social/@DESY\" class=\"u-url mention\">@<span>DESY</span></a></span>, <a href=\"https://helmholtz.social/tags/HZB\" class=\"mention hashtag\" rel=\"tag\">#<span>HZB</span></a> und <span class=\"h-card\" translate=\"no\"><a href=\"https://helmholtz.social/@HZDR\" class=\"u-url mention\">@<span>HZDR</span></a></span> entwickeln die Lichtquellen der Zukunft – mit Teilchenbeschleunigern.</p><p>Mehr dazu: <a href=\"https://www.helmholtz.de/ueber-uns/helmholtz-stories/story/story-06/?mtm_campaign=30Jahre30Stories&amp;mtm_source=Mastodon-Story6\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">helmholtz.de/ueber-uns/helmhol</span><span class=\"invisible\">tz-stories/story/story-06/?mtm_campaign=30Jahre30Stories&amp;mtm_source=Mastodon-Story6</span></a> <a href=\"https://helmholtz.social/tags/Helmholtz30\" class=\"mention hashtag\" rel=\"tag\">#<span>Helmholtz30</span></a></p>" }, "attachment": [ { "type": "Document", "mediaType": "image/png", "url": "https://helmholtz.social/system/media_attachments/files/114/545/002/313/991/534/original/f4736a9d347eff87.png", "name": "SharePic Teilchenbeschleuniger im Tunnel - Text: 30 Jahre, 30 Stories / Teilchenbeschleuniger als Lichtmaschinen", "blurhash": "UAC6c10Lb0xs~U9Fxvxs9%V;o$WAt9oes;M{", "focalPoint": [ 0.1, -0.24 ], "width": 1080, "height": 1350 } ], "tag": [ { "type": "Mention", "href": "https://helmholtz.social/users/DESY", "name": "@DESY" }, { "type": "Mention", "href": "https://helmholtz.social/users/HZDR", "name": "@HZDR" }, { "type": "Hashtag", "href": "https://helmholtz.social/tags/hzb", "name": "#hzb" }, { "type": "Hashtag", "href": "https://helmholtz.social/tags/helmholtz30", "name": "#helmholtz30" } ], "replies": { "id": "https://helmholtz.social/users/helmholtz/statuses/114545006621939127/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://helmholtz.social/users/helmholtz/statuses/114545006621939127/replies?only_other_accounts=true&page=true", "partOf": "https://helmholtz.social/users/helmholtz/statuses/114545006621939127/replies", "items": [] } }, "likes": { "id": "https://helmholtz.social/users/helmholtz/statuses/114545006621939127/likes", "type": "Collection", "totalItems": 5 }, "shares": { "id": "https://helmholtz.social/users/helmholtz/statuses/114545006621939127/shares", "type": "Collection", "totalItems": 7 } }