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", "Hashtag": "as:Hashtag" } ], "id": "https://mastodon.social/users/fedizen/statuses/114715844124932249", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-06-20T13:07:47Z", "url": "https://mastodon.social/@fedizen/114715844124932249", "attributedTo": "https://mastodon.social/users/fedizen", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/fedizen/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/fedizen/statuses/114715844124932249", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2025-06-20:objectId=1027986276:objectType=Conversation", "content": "<p>»<a href=\"https://mastodon.social/tags/PostQuantumPrivacy\" class=\"mention hashtag\" rel=\"tag\">#<span>PostQuantumPrivacy</span></a> for <a href=\"https://mastodon.social/tags/PostPlatformInternet\" class=\"mention hashtag\" rel=\"tag\">#<span>PostPlatformInternet</span></a>. — <a href=\"https://mastodon.social/tags/Fediverse\" class=\"mention hashtag\" rel=\"tag\">#<span>Fediverse</span></a> pilots: <a href=\"https://mastodon.social/tags/ActivityPub\" class=\"mention hashtag\" rel=\"tag\">#<span>ActivityPub</span></a> with <a href=\"https://mastodon.social/tags/Dilithiumsignatures\" class=\"mention hashtag\" rel=\"tag\">#<span>Dilithiumsignatures</span></a>. While <a href=\"https://mastodon.social/tags/Mastodon\" class=\"mention hashtag\" rel=\"tag\">#<span>Mastodon</span></a> and other ActivityPub servers still use <a href=\"https://mastodon.social/tags/RSA\" class=\"mention hashtag\" rel=\"tag\">#<span>RSA</span></a>-<a href=\"https://mastodon.social/tags/HTTP\" class=\"mention hashtag\" rel=\"tag\">#<span>HTTP</span></a>-<a href=\"https://mastodon.social/tags/Signatures\" class=\"mention hashtag\" rel=\"tag\">#<span>Signatures</span></a> by default, developers in the <a href=\"https://mastodon.social/tags/SocialHub\" class=\"mention hashtag\" rel=\"tag\">#<span>SocialHub</span></a> community are working on a <a href=\"https://mastodon.social/tags/FEP\" class=\"mention hashtag\" rel=\"tag\">#<span>FEP</span></a> (Fediverse Enhancement Proposal) to clarify signature processing and accommodate <a href=\"https://mastodon.social/tags/quantumsafealgorithms\" class=\"mention hashtag\" rel=\"tag\">#<span>quantumsafealgorithms</span></a>.« <a href=\"https://hackernoon.com/post-quantum-privacy-for-post-platform-internet?Fedizen.EU\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">hackernoon.com/post-quantum-pr</span><span class=\"invisible\">ivacy-for-post-platform-internet?Fedizen.EU</span></a> <a href=\"https://mastodon.social/tags/Fedizen\" class=\"mention hashtag\" rel=\"tag\">#<span>Fedizen</span></a> <a href=\"https://mastodon.social/tags/Fediverse\" class=\"mention hashtag\" rel=\"tag\">#<span>Fediverse</span></a> <a href=\"https://mastodon.social/tags/ActivityPub\" class=\"mention hashtag\" rel=\"tag\">#<span>ActivityPub</span></a> <a href=\"https://mastodon.social/tags/News\" class=\"mention hashtag\" rel=\"tag\">#<span>News</span></a></p>", "contentMap": { "de": "<p>»<a href=\"https://mastodon.social/tags/PostQuantumPrivacy\" class=\"mention hashtag\" rel=\"tag\">#<span>PostQuantumPrivacy</span></a> for <a href=\"https://mastodon.social/tags/PostPlatformInternet\" class=\"mention hashtag\" rel=\"tag\">#<span>PostPlatformInternet</span></a>. — <a href=\"https://mastodon.social/tags/Fediverse\" class=\"mention hashtag\" rel=\"tag\">#<span>Fediverse</span></a> pilots: <a href=\"https://mastodon.social/tags/ActivityPub\" class=\"mention hashtag\" rel=\"tag\">#<span>ActivityPub</span></a> with <a href=\"https://mastodon.social/tags/Dilithiumsignatures\" class=\"mention hashtag\" rel=\"tag\">#<span>Dilithiumsignatures</span></a>. While <a href=\"https://mastodon.social/tags/Mastodon\" class=\"mention hashtag\" rel=\"tag\">#<span>Mastodon</span></a> and other ActivityPub servers still use <a href=\"https://mastodon.social/tags/RSA\" class=\"mention hashtag\" rel=\"tag\">#<span>RSA</span></a>-<a href=\"https://mastodon.social/tags/HTTP\" class=\"mention hashtag\" rel=\"tag\">#<span>HTTP</span></a>-<a href=\"https://mastodon.social/tags/Signatures\" class=\"mention hashtag\" rel=\"tag\">#<span>Signatures</span></a> by default, developers in the <a href=\"https://mastodon.social/tags/SocialHub\" class=\"mention hashtag\" rel=\"tag\">#<span>SocialHub</span></a> community are working on a <a href=\"https://mastodon.social/tags/FEP\" class=\"mention hashtag\" rel=\"tag\">#<span>FEP</span></a> (Fediverse Enhancement Proposal) to clarify signature processing and accommodate <a href=\"https://mastodon.social/tags/quantumsafealgorithms\" class=\"mention hashtag\" rel=\"tag\">#<span>quantumsafealgorithms</span></a>.« <a href=\"https://hackernoon.com/post-quantum-privacy-for-post-platform-internet?Fedizen.EU\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">hackernoon.com/post-quantum-pr</span><span class=\"invisible\">ivacy-for-post-platform-internet?Fedizen.EU</span></a> <a href=\"https://mastodon.social/tags/Fedizen\" class=\"mention hashtag\" rel=\"tag\">#<span>Fedizen</span></a> <a href=\"https://mastodon.social/tags/Fediverse\" class=\"mention hashtag\" rel=\"tag\">#<span>Fediverse</span></a> <a href=\"https://mastodon.social/tags/ActivityPub\" class=\"mention hashtag\" rel=\"tag\">#<span>ActivityPub</span></a> <a href=\"https://mastodon.social/tags/News\" class=\"mention hashtag\" rel=\"tag\">#<span>News</span></a></p>" }, "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/postquantumprivacy", "name": "#postquantumprivacy" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/postplatforminternet", "name": "#postplatforminternet" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/fediverse", "name": "#fediverse" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/activitypub", "name": "#activitypub" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/dilithiumsignatures", "name": "#dilithiumsignatures" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/mastodon", "name": "#mastodon" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/rsa", "name": "#rsa" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/http", "name": "#http" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/signatures", "name": "#signatures" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/socialhub", "name": "#socialhub" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/fep", "name": "#fep" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/quantumsafealgorithms", "name": "#quantumsafealgorithms" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/fedizen", "name": "#fedizen" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/news", "name": "#news" } ], "replies": { "id": "https://mastodon.social/users/fedizen/statuses/114715844124932249/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/fedizen/statuses/114715844124932249/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/fedizen/statuses/114715844124932249/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/fedizen/statuses/114715844124932249/likes", "type": "Collection", "totalItems": 3 }, "shares": { "id": "https://mastodon.social/users/fedizen/statuses/114715844124932249/shares", "type": "Collection", "totalItems": 7 } }