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", "https://w3id.org/security/v1", { "manuallyApprovesFollowers": "as:manuallyApprovesFollowers", "toot": "http://joinmastodon.org/ns#", "featured": { "@id": "toot:featured", "@type": "@id" }, "featuredTags": { "@id": "toot:featuredTags", "@type": "@id" }, "alsoKnownAs": { "@id": "as:alsoKnownAs", "@type": "@id" }, "movedTo": { "@id": "as:movedTo", "@type": "@id" }, "schema": "http://schema.org#", "PropertyValue": "schema:PropertyValue", "value": "schema:value", "discoverable": "toot:discoverable", "suspended": "toot:suspended", "memorial": "toot:memorial", "indexable": "toot:indexable", "attributionDomains": { "@id": "toot:attributionDomains", "@type": "@id" }, "focalPoint": { "@container": "@list", "@id": "toot:focalPoint" } } ], "id": "https://mastodon-japan.net/users/SecLeftF", "type": "Person", "following": "https://mastodon-japan.net/users/SecLeftF/following", "followers": "https://mastodon-japan.net/users/SecLeftF/followers", "inbox": "https://mastodon-japan.net/users/SecLeftF/inbox", "outbox": "https://mastodon-japan.net/users/SecLeftF/outbox", "featured": "https://mastodon-japan.net/users/SecLeftF/collections/featured", "featuredTags": "https://mastodon-japan.net/users/SecLeftF/collections/tags", "preferredUsername": "SecLeftF", "name": "左五十郎", "summary": "<p>ツイッターさまが屁ックソ化とかメッタクソさまがトンプラにすり寄りやがって抜け出してヨ、その前から別の鯖で四の五のヤッてたが、ドイツにサーバーあるッてンでパレスチナのコトで発言ヤバげつうからjapan.netさまに引っ越したぜ。</p>", "url": "https://mastodon-japan.net/@SecLeftF", "manuallyApprovesFollowers": false, "discoverable": true, "indexable": true, "published": "2025-04-16T00:00:00Z", "memorial": false, "alsoKnownAs": [ "https://mastodon.social/users/Standardier" ], "publicKey": { "id": "https://mastodon-japan.net/users/SecLeftF#main-key", "owner": "https://mastodon-japan.net/users/SecLeftF", "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmu9F5LZlJRPeCoIqhgg2\nx35DtBN+jrzwAiJUZnI2Wn/nCTj0+DeN0UP0ZGeldfUg53pN3qKxkJjnZhcmn4kT\ncm01UivyM7RkM+kHvj4nvWk9HVKaXzjb65Euxeg5hk0HQdg99+kE/HpB67/EBqvD\nyVBDB+ZX8M7ZjjQLvf12OnQm0QC9bEKaYZIzX7cAM7zXaeUnapfLxJT24l6LLhzw\ngFlANZGBp4vu1X16V+sh1d4pU4qz3loU2L62fKCZmuEN0F2hZHNTI5Go+HDgP45C\nSwFum3K45N5qneGzqKgf1g3d9NQKx+/30sVneFpbM7xR/aF7VBc4hM10EiqswrFp\nawIDAQAB\n-----END PUBLIC KEY-----\n" }, "tag": [], "attachment": [], "endpoints": { "sharedInbox": "https://mastodon-japan.net/inbox" }, "icon": { "type": "Image", "mediaType": "image/jpeg", "url": "https://files.mastodon-japan.net/accounts/avatars/114/346/655/271/774/617/original/d1618f921ce31f57.jpg" }, "image": { "type": "Image", "mediaType": "image/jpeg", "url": "https://files.mastodon-japan.net/accounts/headers/114/346/655/271/774/617/original/204eb7032629faf3.jpg" } }