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://mastodon.social/users/guyikcgg/statuses/114760833189205588", "type": "Note", "summary": null, "inReplyTo": "https://mastodon.social/users/guyikcgg/statuses/114760796230163789", "published": "2025-06-28T11:49:06Z", "url": "https://mastodon.social/@guyikcgg/114760833189205588", "attributedTo": "https://mastodon.social/users/guyikcgg", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/guyikcgg/followers", "https://mastodon.gamedev.place/users/sos" ], "sensitive": false, "atomUri": "https://mastodon.social/users/guyikcgg/statuses/114760833189205588", "inReplyToAtomUri": "https://mastodon.social/users/guyikcgg/statuses/114760796230163789", "conversation": "tag:mastodon.gamedev.place,2025-06-28:objectId=157478981:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.gamedev.place/@sos\" class=\"u-url mention\">@<span>sos</span></a></span> </p><p><a href=\"https://mastodon.social/tags/include\" class=\"mention hashtag\" rel=\"tag\">#<span>include</span></a>&lt;stdint.h&gt;</p><p>typedef struct {<br /> uint8_t r, g, b, a;<br />} rgba32_t;</p><p>typedef struct {<br /> uint16_t r, g, b, a;<br />} rgba64_t;</p><p>int main() {<br /> rgba32_t color1;<br /> rgba64_t color2;</p><p> color2.r = color1.r &lt;&lt; 8;<br /> color2.g = color1.g &lt;&lt; 8;<br /> color2.b = color1.b &lt;&lt; 8;<br /> color2.a = color1.a &lt;&lt; 8;</p><p>}</p><p>// This would be my first attempt. Not tested!</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.gamedev.place/@sos\" class=\"u-url mention\">@<span>sos</span></a></span> </p><p><a href=\"https://mastodon.social/tags/include\" class=\"mention hashtag\" rel=\"tag\">#<span>include</span></a>&lt;stdint.h&gt;</p><p>typedef struct {<br /> uint8_t r, g, b, a;<br />} rgba32_t;</p><p>typedef struct {<br /> uint16_t r, g, b, a;<br />} rgba64_t;</p><p>int main() {<br /> rgba32_t color1;<br /> rgba64_t color2;</p><p> color2.r = color1.r &lt;&lt; 8;<br /> color2.g = color1.g &lt;&lt; 8;<br /> color2.b = color1.b &lt;&lt; 8;<br /> color2.a = color1.a &lt;&lt; 8;</p><p>}</p><p>// This would be my first attempt. Not tested!</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mastodon.gamedev.place/users/sos", "name": "@sos@mastodon.gamedev.place" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/include", "name": "#include" } ], "replies": { "id": "https://mastodon.social/users/guyikcgg/statuses/114760833189205588/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/guyikcgg/statuses/114760833189205588/replies?min_id=114760850424684422&page=true", "partOf": "https://mastodon.social/users/guyikcgg/statuses/114760833189205588/replies", "items": [ "https://mastodon.social/users/guyikcgg/statuses/114760850424684422" ] } }, "likes": { "id": "https://mastodon.social/users/guyikcgg/statuses/114760833189205588/likes", "type": "Collection", "totalItems": 0 }, "shares": { "id": "https://mastodon.social/users/guyikcgg/statuses/114760833189205588/shares", "type": "Collection", "totalItems": 0 } }