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.
{
"@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.social/users/concretedog/collections/featured",
"type": "OrderedCollection",
"totalItems": 2,
"orderedItems": [
{
"id": "https://mastodon.social/users/concretedog/statuses/114517565659891077",
"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-05-16T12:42:58Z",
"url": "https://mastodon.social/@concretedog/114517565659891077",
"attributedTo": "https://mastodon.social/users/concretedog",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://mastodon.social/users/concretedog/followers",
"https://fosstodon.org/users/FreeCAD"
],
"sensitive": false,
"atomUri": "https://mastodon.social/users/concretedog/statuses/114517565659891077",
"inReplyToAtomUri": null,
"conversation": "tag:mastodon.social,2025-05-16:objectId=998591157:objectType=Conversation",
"content": "<p>Something for the weekend? I'm super pleased to have just blogged with the 1st issue of <a href=\"https://mastodon.social/tags/SOURCE\" class=\"mention hashtag\" rel=\"tag\">#<span>SOURCE</span></a>. SOURCE is an idea for where to place articles I'd like to write but that are to difficult for my brilliant paid clients to home. SOURCE is opensource, free (pay as you feel) and I'd LOVE it if you shared my first experimental issue on Computational Fluid Dynamics with <span class=\"h-card\" translate=\"no\"><a href=\"https://fosstodon.org/@FreeCAD\" class=\"u-url mention\">@<span>FreeCAD</span></a></span> that's on this blog. Ta. <br /><a href=\"https://mastodon.social/tags/opensource\" class=\"mention hashtag\" rel=\"tag\">#<span>opensource</span></a> <a href=\"https://mastodon.social/tags/FreeCAD\" class=\"mention hashtag\" rel=\"tag\">#<span>FreeCAD</span></a> <a href=\"https://mastodon.social/tags/newsletter\" class=\"mention hashtag\" rel=\"tag\">#<span>newsletter</span></a> <a href=\"https://mastodon.social/tags/decentralise\" class=\"mention hashtag\" rel=\"tag\">#<span>decentralise</span></a> <br /><a href=\"https://concretedog.blogspot.com/2025/05/source-issue-1-out-now-computational.html\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">concretedog.blogspot.com/2025/</span><span class=\"invisible\">05/source-issue-1-out-now-computational.html</span></a></p>",
"contentMap": {
"en": "<p>Something for the weekend? I'm super pleased to have just blogged with the 1st issue of <a href=\"https://mastodon.social/tags/SOURCE\" class=\"mention hashtag\" rel=\"tag\">#<span>SOURCE</span></a>. SOURCE is an idea for where to place articles I'd like to write but that are to difficult for my brilliant paid clients to home. SOURCE is opensource, free (pay as you feel) and I'd LOVE it if you shared my first experimental issue on Computational Fluid Dynamics with <span class=\"h-card\" translate=\"no\"><a href=\"https://fosstodon.org/@FreeCAD\" class=\"u-url mention\">@<span>FreeCAD</span></a></span> that's on this blog. Ta. <br /><a href=\"https://mastodon.social/tags/opensource\" class=\"mention hashtag\" rel=\"tag\">#<span>opensource</span></a> <a href=\"https://mastodon.social/tags/FreeCAD\" class=\"mention hashtag\" rel=\"tag\">#<span>FreeCAD</span></a> <a href=\"https://mastodon.social/tags/newsletter\" class=\"mention hashtag\" rel=\"tag\">#<span>newsletter</span></a> <a href=\"https://mastodon.social/tags/decentralise\" class=\"mention hashtag\" rel=\"tag\">#<span>decentralise</span></a> <br /><a href=\"https://concretedog.blogspot.com/2025/05/source-issue-1-out-now-computational.html\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">concretedog.blogspot.com/2025/</span><span class=\"invisible\">05/source-issue-1-out-now-computational.html</span></a></p>"
},
"attachment": [
{
"type": "Document",
"mediaType": "image/jpeg",
"url": "https://files.mastodon.social/media_attachments/files/114/517/556/624/214/695/original/b3eae09dd7bce979.jpeg",
"name": "A magazine style cover. Diagonally across the middle is an image from a CFD simulation of a Ballute parachute in a virtual wind tunnel created in FreeCAD and post processed in the opensource Paraview. The magazine/newsletter is called SOURCE and there are text details listing the issue number, the month and year as well as a line about how the contents are covering Computational Fluid Dynamics. ",
"blurhash": "UCBW3{TK-NSh?c^lX8xs53$*xxs,v{4-$+Sj",
"focalPoint": [
0,
0
],
"width": 595,
"height": 842
}
],
"tag": [
{
"type": "Mention",
"href": "https://fosstodon.org/users/FreeCAD",
"name": "@FreeCAD@fosstodon.org"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/source",
"name": "#source"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/opensource",
"name": "#opensource"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/freecad",
"name": "#freecad"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/newsletter",
"name": "#newsletter"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/decentralise",
"name": "#decentralise"
}
],
"replies": {
"id": "https://mastodon.social/users/concretedog/statuses/114517565659891077/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://mastodon.social/users/concretedog/statuses/114517565659891077/replies?only_other_accounts=true&page=true",
"partOf": "https://mastodon.social/users/concretedog/statuses/114517565659891077/replies",
"items": []
}
},
"likes": {
"id": "https://mastodon.social/users/concretedog/statuses/114517565659891077/likes",
"type": "Collection",
"totalItems": 57
},
"shares": {
"id": "https://mastodon.social/users/concretedog/statuses/114517565659891077/shares",
"type": "Collection",
"totalItems": 49
}
},
{
"id": "https://mastodon.social/users/concretedog/statuses/109286701785596242",
"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2022-11-04T17:25:29Z",
"url": "https://mastodon.social/@concretedog/109286701785596242",
"attributedTo": "https://mastodon.social/users/concretedog",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://mastodon.social/users/concretedog/followers",
"https://fosstodon.org/users/FreeCAD",
"https://mastodon.social/users/yorik"
],
"sensitive": false,
"atomUri": "https://mastodon.social/users/concretedog/statuses/109286701785596242",
"inReplyToAtomUri": null,
"conversation": "tag:mastodon.social,2022-11-04:objectId=325372712:objectType=Conversation",
"content": "<p>Realised I'd neglected to post about my <span class=\"h-card\" translate=\"no\"><a href=\"https://fosstodon.org/@FreeCAD\" class=\"u-url mention\">@<span>FreeCAD</span></a></span> book on here. "FreeCAD for Makers" is out and available for free download now via Raspberry Pi Press. Huge thanks to the Hackspace magazine crew for getting it together and the mighty <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.social/@yorik\" class=\"u-url mention\">@<span>yorik</span></a></span> for the foreword! <a href=\"https://mastodon.social/tags/opensource\" class=\"mention hashtag\" rel=\"tag\">#<span>opensource</span></a> <a href=\"https://mastodon.social/tags/CAD\" class=\"mention hashtag\" rel=\"tag\">#<span>CAD</span></a> <a href=\"https://mastodon.social/tags/CAM\" class=\"mention hashtag\" rel=\"tag\">#<span>CAM</span></a> <a href=\"https://mastodon.social/tags/FEM\" class=\"mention hashtag\" rel=\"tag\">#<span>FEM</span></a> <a href=\"https://mastodon.social/tags/Makers\" class=\"mention hashtag\" rel=\"tag\">#<span>Makers</span></a> DL here <a href=\"https://t.co/e0Sk0I49Td\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">t.co/e0Sk0I49Td</span><span class=\"invisible\"></span></a></p>",
"contentMap": {
"en": "<p>Realised I'd neglected to post about my <span class=\"h-card\" translate=\"no\"><a href=\"https://fosstodon.org/@FreeCAD\" class=\"u-url mention\">@<span>FreeCAD</span></a></span> book on here. "FreeCAD for Makers" is out and available for free download now via Raspberry Pi Press. Huge thanks to the Hackspace magazine crew for getting it together and the mighty <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.social/@yorik\" class=\"u-url mention\">@<span>yorik</span></a></span> for the foreword! <a href=\"https://mastodon.social/tags/opensource\" class=\"mention hashtag\" rel=\"tag\">#<span>opensource</span></a> <a href=\"https://mastodon.social/tags/CAD\" class=\"mention hashtag\" rel=\"tag\">#<span>CAD</span></a> <a href=\"https://mastodon.social/tags/CAM\" class=\"mention hashtag\" rel=\"tag\">#<span>CAM</span></a> <a href=\"https://mastodon.social/tags/FEM\" class=\"mention hashtag\" rel=\"tag\">#<span>FEM</span></a> <a href=\"https://mastodon.social/tags/Makers\" class=\"mention hashtag\" rel=\"tag\">#<span>Makers</span></a> DL here <a href=\"https://t.co/e0Sk0I49Td\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">t.co/e0Sk0I49Td</span><span class=\"invisible\"></span></a></p>"
},
"attachment": [
{
"type": "Document",
"mediaType": "image/png",
"url": "https://files.mastodon.social/media_attachments/files/109/286/700/408/777/515/original/eaacf830f12584b2.png",
"name": null,
"blurhash": "UMOeeVxwsPJo_JB;WCOE4m$+-;r?=_#lpHs+",
"width": 500,
"height": 657
}
],
"tag": [
{
"type": "Mention",
"href": "https://fosstodon.org/users/FreeCAD",
"name": "@FreeCAD@fosstodon.org"
},
{
"type": "Mention",
"href": "https://mastodon.social/users/yorik",
"name": "@yorik"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/opensource",
"name": "#opensource"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/cad",
"name": "#cad"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/cam",
"name": "#cam"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/fem",
"name": "#fem"
},
{
"type": "Hashtag",
"href": "https://mastodon.social/tags/makers",
"name": "#makers"
}
],
"replies": {
"id": "https://mastodon.social/users/concretedog/statuses/109286701785596242/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://mastodon.social/users/concretedog/statuses/109286701785596242/replies?only_other_accounts=true&page=true",
"partOf": "https://mastodon.social/users/concretedog/statuses/109286701785596242/replies",
"items": []
}
},
"likes": {
"id": "https://mastodon.social/users/concretedog/statuses/109286701785596242/likes",
"type": "Collection",
"totalItems": 177
},
"shares": {
"id": "https://mastodon.social/users/concretedog/statuses/109286701785596242/shares",
"type": "Collection",
"totalItems": 133
}
}
]
}