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", "Hashtag": "as:Hashtag" } ], "id": "https://social.heise.de/users/heiseonlineenglish/statuses/114579831545627086", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-05-27T12:38:00Z", "url": "https://social.heise.de/@heiseonlineenglish/114579831545627086", "attributedTo": "https://social.heise.de/users/heiseonlineenglish", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://social.heise.de/users/heiseonlineenglish/followers" ], "sensitive": false, "atomUri": "https://social.heise.de/users/heiseonlineenglish/statuses/114579831545627086", "inReplyToAtomUri": null, "conversation": "tag:social.heise.de,2025-05-27:objectId=11487407:objectType=Conversation", "content": "<p>Stalwart 0.12 is here: Free mail server brings support for calendar and contacts</p><p>The open source mail server Stalwart now natively supports contacts and calendars. The developers want to use this to expand it into a collaboration platform.</p><p><a href=\"https://www.heise.de/en/news/Stalwart-0-12-is-here-Free-mail-server-brings-support-for-calendar-and-contacts-10403990.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&amp;utm_source=mastodon\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">heise.de/en/news/Stalwart-0-12</span><span class=\"invisible\">-is-here-Free-mail-server-brings-support-for-calendar-and-contacts-10403990.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&amp;utm_source=mastodon</span></a></p><p><a href=\"https://social.heise.de/tags/EMail\" class=\"mention hashtag\" rel=\"tag\">#<span>EMail</span></a> <a href=\"https://social.heise.de/tags/Filesharing\" class=\"mention hashtag\" rel=\"tag\">#<span>Filesharing</span></a> <a href=\"https://social.heise.de/tags/Internet\" class=\"mention hashtag\" rel=\"tag\">#<span>Internet</span></a> <a href=\"https://social.heise.de/tags/IT\" class=\"mention hashtag\" rel=\"tag\">#<span>IT</span></a> <a href=\"https://social.heise.de/tags/Collaboration\" class=\"mention hashtag\" rel=\"tag\">#<span>Collaboration</span></a> <a href=\"https://social.heise.de/tags/MozillaThunderbird\" class=\"mention hashtag\" rel=\"tag\">#<span>MozillaThunderbird</span></a> <a href=\"https://social.heise.de/tags/Server\" class=\"mention hashtag\" rel=\"tag\">#<span>Server</span></a> <a href=\"https://social.heise.de/tags/Software\" class=\"mention hashtag\" rel=\"tag\">#<span>Software</span></a> <a href=\"https://social.heise.de/tags/Spam\" class=\"mention hashtag\" rel=\"tag\">#<span>Spam</span></a> <a href=\"https://social.heise.de/tags/Webentwicklung\" class=\"mention hashtag\" rel=\"tag\">#<span>Webentwicklung</span></a> <a href=\"https://social.heise.de/tags/news\" class=\"mention hashtag\" rel=\"tag\">#<span>news</span></a></p>", "contentMap": { "de": "<p>Stalwart 0.12 is here: Free mail server brings support for calendar and contacts</p><p>The open source mail server Stalwart now natively supports contacts and calendars. The developers want to use this to expand it into a collaboration platform.</p><p><a href=\"https://www.heise.de/en/news/Stalwart-0-12-is-here-Free-mail-server-brings-support-for-calendar-and-contacts-10403990.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&amp;utm_source=mastodon\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">heise.de/en/news/Stalwart-0-12</span><span class=\"invisible\">-is-here-Free-mail-server-brings-support-for-calendar-and-contacts-10403990.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&amp;utm_source=mastodon</span></a></p><p><a href=\"https://social.heise.de/tags/EMail\" class=\"mention hashtag\" rel=\"tag\">#<span>EMail</span></a> <a href=\"https://social.heise.de/tags/Filesharing\" class=\"mention hashtag\" rel=\"tag\">#<span>Filesharing</span></a> <a href=\"https://social.heise.de/tags/Internet\" class=\"mention hashtag\" rel=\"tag\">#<span>Internet</span></a> <a href=\"https://social.heise.de/tags/IT\" class=\"mention hashtag\" rel=\"tag\">#<span>IT</span></a> <a href=\"https://social.heise.de/tags/Collaboration\" class=\"mention hashtag\" rel=\"tag\">#<span>Collaboration</span></a> <a href=\"https://social.heise.de/tags/MozillaThunderbird\" class=\"mention hashtag\" rel=\"tag\">#<span>MozillaThunderbird</span></a> <a href=\"https://social.heise.de/tags/Server\" class=\"mention hashtag\" rel=\"tag\">#<span>Server</span></a> <a href=\"https://social.heise.de/tags/Software\" class=\"mention hashtag\" rel=\"tag\">#<span>Software</span></a> <a href=\"https://social.heise.de/tags/Spam\" class=\"mention hashtag\" rel=\"tag\">#<span>Spam</span></a> <a href=\"https://social.heise.de/tags/Webentwicklung\" class=\"mention hashtag\" rel=\"tag\">#<span>Webentwicklung</span></a> <a href=\"https://social.heise.de/tags/news\" class=\"mention hashtag\" rel=\"tag\">#<span>news</span></a></p>" }, "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://social.heise.de/tags/email", "name": "#email" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/filesharing", "name": "#filesharing" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/internet", "name": "#internet" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/it", "name": "#it" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/collaboration", "name": "#collaboration" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/mozillathunderbird", "name": "#mozillathunderbird" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/server", "name": "#server" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/software", "name": "#software" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/spam", "name": "#spam" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/webentwicklung", "name": "#webentwicklung" }, { "type": "Hashtag", "href": "https://social.heise.de/tags/news", "name": "#news" } ], "replies": { "id": "https://social.heise.de/users/heiseonlineenglish/statuses/114579831545627086/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://social.heise.de/users/heiseonlineenglish/statuses/114579831545627086/replies?only_other_accounts=true&page=true", "partOf": "https://social.heise.de/users/heiseonlineenglish/statuses/114579831545627086/replies", "items": [] } }, "likes": { "id": "https://social.heise.de/users/heiseonlineenglish/statuses/114579831545627086/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://social.heise.de/users/heiseonlineenglish/statuses/114579831545627086/shares", "type": "Collection", "totalItems": 5 } }