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://join-lemmy.org/context.json", "https://www.w3.org/ns/activitystreams" ], "type": "Page", "id": "https://lemmy.ml/post/29757133", "attributedTo": "https://lemmy.ml/u/jjba23", "to": [ "https://lemmy.ml/c/unixporn", "https://www.w3.org/ns/activitystreams#Public" ], "name": "Supreme Sexp System v2.3.15 (SSS) - SSS is a Lisp machine adventure with GNU/Linux, Guix, Emacs, Hyprland, Waybar and much more", "cc": [], "mediaType": "text/html", "attachment": [ { "href": "https://mastodon.social/@sss_project/114468587771079543", "mediaType": "text/html; charset=utf-8", "type": "Link" } ], "image": { "type": "Image", "url": "https://lemmy.ml/api/v3/image_proxy?url=https%3A%2F%2Ffiles.mastodon.social%2Fmedia_attachments%2Ffiles%2F114%2F468%2F576%2F494%2F259%2F787%2Foriginal%2Ffc29a9ea0c1e82ba.png" }, "sensitive": false, "published": "2025-05-07T21:09:52.566636Z", "updated": "2025-05-07T21:11:45.771816Z", "language": { "identifier": "en", "name": "English" }, "audience": "https://lemmy.ml/c/unixporn", "tag": [ { "href": "https://lemmy.ml/post/29757133", "name": "#unixporn", "type": "Hashtag" } ] }