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", "litepub": "http://litepub.social/ns#", "directMessage": "litepub:directMessage", "Hashtag": "as:Hashtag" } ], "id": "https://infosec.exchange/users/kpwn/statuses/114070656235178223", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-02-26T14:28:01Z", "url": "https://infosec.exchange/@kpwn/114070656235178223", "attributedTo": "https://infosec.exchange/users/kpwn", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://infosec.exchange/users/kpwn/followers" ], "sensitive": false, "atomUri": "https://infosec.exchange/users/kpwn/statuses/114070656235178223", "inReplyToAtomUri": null, "conversation": "tag:infosec.exchange,2025-02-26:objectId=245653125:objectType=Conversation", "content": "<p>Mastodon&#39;s Formatting of Shortened Links May Break Your Parser (It broke mine…)</p><p>Read more below 🧵</p><p><a href=\"https://infosec.exchange/tags/Coding\" class=\"mention hashtag\" rel=\"tag\">#<span>Coding</span></a> <a href=\"https://infosec.exchange/tags/Programming\" class=\"mention hashtag\" rel=\"tag\">#<span>Programming</span></a> <a href=\"https://infosec.exchange/tags/RegEx\" class=\"mention hashtag\" rel=\"tag\">#<span>RegEx</span></a> <a href=\"https://infosec.exchange/tags/InfoSec\" class=\"mention hashtag\" rel=\"tag\">#<span>InfoSec</span></a> <a href=\"https://infosec.exchange/tags/CyberSecurity\" class=\"mention hashtag\" rel=\"tag\">#<span>CyberSecurity</span></a> <a href=\"https://infosec.exchange/tags/Hacking\" class=\"mention hashtag\" rel=\"tag\">#<span>Hacking</span></a> <a href=\"https://infosec.exchange/tags/CVE\" class=\"mention hashtag\" rel=\"tag\">#<span>CVE</span></a> <a href=\"https://infosec.exchange/tags/CveCrowd\" class=\"mention hashtag\" rel=\"tag\">#<span>CveCrowd</span></a></p>", "contentMap": { "en": "<p>Mastodon&#39;s Formatting of Shortened Links May Break Your Parser (It broke mine…)</p><p>Read more below 🧵</p><p><a href=\"https://infosec.exchange/tags/Coding\" class=\"mention hashtag\" rel=\"tag\">#<span>Coding</span></a> <a href=\"https://infosec.exchange/tags/Programming\" class=\"mention hashtag\" rel=\"tag\">#<span>Programming</span></a> <a href=\"https://infosec.exchange/tags/RegEx\" class=\"mention hashtag\" rel=\"tag\">#<span>RegEx</span></a> <a href=\"https://infosec.exchange/tags/InfoSec\" class=\"mention hashtag\" rel=\"tag\">#<span>InfoSec</span></a> <a href=\"https://infosec.exchange/tags/CyberSecurity\" class=\"mention hashtag\" rel=\"tag\">#<span>CyberSecurity</span></a> <a href=\"https://infosec.exchange/tags/Hacking\" class=\"mention hashtag\" rel=\"tag\">#<span>Hacking</span></a> <a href=\"https://infosec.exchange/tags/CVE\" class=\"mention hashtag\" rel=\"tag\">#<span>CVE</span></a> <a href=\"https://infosec.exchange/tags/CveCrowd\" class=\"mention hashtag\" rel=\"tag\">#<span>CveCrowd</span></a></p>" }, "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://infosec.exchange/tags/coding", "name": "#coding" }, { "type": "Hashtag", "href": "https://infosec.exchange/tags/programming", "name": "#programming" }, { "type": "Hashtag", "href": "https://infosec.exchange/tags/regex", "name": "#regex" }, { "type": "Hashtag", "href": "https://infosec.exchange/tags/infosec", "name": "#infosec" }, { "type": "Hashtag", "href": "https://infosec.exchange/tags/cybersecurity", "name": "#cybersecurity" }, { "type": "Hashtag", "href": "https://infosec.exchange/tags/hacking", "name": "#hacking" }, { "type": "Hashtag", "href": "https://infosec.exchange/tags/cve", "name": "#cve" }, { "type": "Hashtag", "href": "https://infosec.exchange/tags/cvecrowd", "name": "#cvecrowd" } ], "replies": { "id": "https://infosec.exchange/users/kpwn/statuses/114070656235178223/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://infosec.exchange/users/kpwn/statuses/114070656235178223/replies?min_id=114070656246316079&page=true", "partOf": "https://infosec.exchange/users/kpwn/statuses/114070656235178223/replies", "items": [ "https://infosec.exchange/users/kpwn/statuses/114070656246316079" ] } }, "likes": { "id": "https://infosec.exchange/users/kpwn/statuses/114070656235178223/likes", "type": "Collection", "totalItems": 8 }, "shares": { "id": "https://infosec.exchange/users/kpwn/statuses/114070656235178223/shares", "type": "Collection", "totalItems": 9 } }