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" } ], "id": "https://ma.fellr.net/users/fell/statuses/114307439057048746/replies", "type": "Collection", "first": { "id": "https://ma.fellr.net/users/fell/statuses/114307439057048746/replies?page=true", "type": "CollectionPage", "next": "https://ma.fellr.net/users/fell/statuses/114307439057048746/replies?only_other_accounts=true&page=true", "partOf": "https://ma.fellr.net/users/fell/statuses/114307439057048746/replies", "items": [ { "id": "https://ma.fellr.net/users/fell/statuses/114307477446371622", "type": "Note", "summary": null, "inReplyTo": "https://ma.fellr.net/users/fell/statuses/114307439057048746", "published": "2025-04-09T10:14:46Z", "url": "https://ma.fellr.net/@fell/114307477446371622", "attributedTo": "https://ma.fellr.net/users/fell", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://ma.fellr.net/users/fell/followers" ], "sensitive": false, "atomUri": "https://ma.fellr.net/users/fell/statuses/114307477446371622", "inReplyToAtomUri": "https://ma.fellr.net/users/fell/statuses/114307439057048746", "conversation": "tag:ma.fellr.net,2025-04-09:objectId=19966336:objectType=Conversation", "content": "<p>With the better consistency on Windows I felt confident to measure the top of the screen:</p><p>⏱️ 59 ms on Windows 10 (top of monitor)</p><p>This was surprising at first, but it kind of makes sense: The monitor refreshes from top to bottom, and it does so every 16.667 ms (60 Hz). It seems like the monitor needs almost the entire time for a full refresh, as the top of the screen reacts a good 10 ms earlier than the bottom.</p>", "contentMap": { "en": "<p>With the better consistency on Windows I felt confident to measure the top of the screen:</p><p>⏱️ 59 ms on Windows 10 (top of monitor)</p><p>This was surprising at first, but it kind of makes sense: The monitor refreshes from top to bottom, and it does so every 16.667 ms (60 Hz). It seems like the monitor needs almost the entire time for a full refresh, as the top of the screen reacts a good 10 ms earlier than the bottom.</p>" }, "updated": "2025-04-09T10:16:04Z", "attachment": [], "tag": [], "replies": { "id": "https://ma.fellr.net/users/fell/statuses/114307477446371622/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://ma.fellr.net/users/fell/statuses/114307477446371622/replies?only_other_accounts=true&page=true", "partOf": "https://ma.fellr.net/users/fell/statuses/114307477446371622/replies", "items": [] } }, "likes": { "id": "https://ma.fellr.net/users/fell/statuses/114307477446371622/likes", "type": "Collection", "totalItems": 2 }, "shares": { "id": "https://ma.fellr.net/users/fell/statuses/114307477446371622/shares", "type": "Collection", "totalItems": 0 } } ] } }