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.

Open in browser →
{ "@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.world/users/petrnuska/statuses/114103109291762819/replies", "type": "Collection", "first": { "id": "https://mastodon.world/users/petrnuska/statuses/114103109291762819/replies?page=true", "type": "CollectionPage", "next": "https://mastodon.world/users/petrnuska/statuses/114103109291762819/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.world/users/petrnuska/statuses/114103109291762819/replies", "items": [ { "id": "https://mastodon.world/users/petrnuska/statuses/114103111835859732", "type": "Note", "summary": null, "inReplyTo": "https://mastodon.world/users/petrnuska/statuses/114103109291762819", "published": "2025-03-04T08:01:54Z", "url": "https://mastodon.world/@petrnuska/114103111835859732", "attributedTo": "https://mastodon.world/users/petrnuska", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.world/users/petrnuska/followers" ], "sensitive": false, "atomUri": "https://mastodon.world/users/petrnuska/statuses/114103111835859732", "inReplyToAtomUri": "https://mastodon.world/users/petrnuska/statuses/114103109291762819", "conversation": "tag:mastodon.world,2025-03-04:objectId=381788341:objectType=Conversation", "content": "<p>Another method we considered was the <a href=\"https://mastodon.world/tags/PolyphonicDetection\" class=\"mention hashtag\" rel=\"tag\">#<span>PolyphonicDetection</span></a>.</p><p>This method focuses on identifying and extracting individual notes from musical textures by analysing frequency components, onset times, and timbral features using techniques such as spectral decomposition, pitch tracking, and machine learning-based transcription methods.</p><p><a href=\"https://mastodon.world/tags/RomaniChords\" class=\"mention hashtag\" rel=\"tag\">#<span>RomaniChords</span></a></p><p>🧵6/20</p>", "contentMap": { "en": "<p>Another method we considered was the <a href=\"https://mastodon.world/tags/PolyphonicDetection\" class=\"mention hashtag\" rel=\"tag\">#<span>PolyphonicDetection</span></a>.</p><p>This method focuses on identifying and extracting individual notes from musical textures by analysing frequency components, onset times, and timbral features using techniques such as spectral decomposition, pitch tracking, and machine learning-based transcription methods.</p><p><a href=\"https://mastodon.world/tags/RomaniChords\" class=\"mention hashtag\" rel=\"tag\">#<span>RomaniChords</span></a></p><p>🧵6/20</p>" }, "attachment": [ { "type": "Document", "mediaType": "image/jpeg", "url": "https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/114/103/110/881/721/616/original/3142b4e9986bd433.jpg", "name": "A scheme explaining various musical textures – monophonic, homophonic, polyphonic and heterophonic.", "blurhash": "UBR{*}%g~q?a%MaeRia}-DoLInafMKbIx]ax", "focalPoint": [ 0, 0 ], "width": 550, "height": 1100 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.world/tags/polyphonicdetection", "name": "#polyphonicdetection" }, { "type": "Hashtag", "href": "https://mastodon.world/tags/romanichords", "name": "#romanichords" } ], "replies": { "id": "https://mastodon.world/users/petrnuska/statuses/114103111835859732/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.world/users/petrnuska/statuses/114103111835859732/replies?min_id=114103116818871637&page=true", "partOf": "https://mastodon.world/users/petrnuska/statuses/114103111835859732/replies", "items": [ "https://mastodon.world/users/petrnuska/statuses/114103116818871637" ] } }, "likes": { "id": "https://mastodon.world/users/petrnuska/statuses/114103111835859732/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mastodon.world/users/petrnuska/statuses/114103111835859732/shares", "type": "Collection", "totalItems": 0 } } ] } }