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", "blurhash": "toot:blurhash", "focalPoint": { "@container": "@list", "@id": "toot:focalPoint" }, "Hashtag": "as:Hashtag", "Emoji": "toot:Emoji" } ], "id": "https://hello.2heng.xin/users/omgubuntu/statuses/114263693969155423", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-04-01T16:40:03Z", "url": "https://hello.2heng.xin/@omgubuntu/114263693969155423", "attributedTo": "https://hello.2heng.xin/users/omgubuntu", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://hello.2heng.xin/users/omgubuntu/followers" ], "sensitive": false, "atomUri": "https://hello.2heng.xin/users/omgubuntu/statuses/114263693969155423", "inReplyToAtomUri": null, "conversation": "tag:hello.2heng.xin,2025-04-01:objectId=18827937:objectType=Conversation", "content": "<p>Firefox 137 Released with Tab Groups, Address Bar Revamp + More</p><p>Tab grouping is the latest big-ticket feature to be added to Mozilla Firefox, which sees a new stable release roll out from today. Last month’s Firefox 136 update delivered long-requested support for vertical tabs, a redesigned sidebar experience giving easy access to existing and new features (including online AI chatbots), and flipped the switch on AMD video hardware decoding for Linux users. Firefox 137 is an equally big update, bringing tab grouping, a revamped search bar, and a host of other changes. Let’s take a look. Firefox 137: New Features Tab Grouping Firefox 137 brings Tab Groups to users on the stable :sys_more_orange:<br /><a href=\"https://hello.2heng.xin/tags/News\" class=\"mention hashtag\" rel=\"tag\">#<span>News</span></a> <a href=\"https://hello.2heng.xin/tags/AppUpdates\" class=\"mention hashtag\" rel=\"tag\">#<span>AppUpdates</span></a> <a href=\"https://hello.2heng.xin/tags/Firefox\" class=\"mention hashtag\" rel=\"tag\">#<span>Firefox</span></a> <a href=\"https://hello.2heng.xin/tags/Hevc\" class=\"mention hashtag\" rel=\"tag\">#<span>Hevc</span></a> </p><p>:sys_omgubuntu: <a href=\"https://www.omgubuntu.co.uk/2025/04/firefox-137-new-features\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">omgubuntu.co.uk/2025/04/firefo</span><span class=\"invisible\">x-137-new-features</span></a></p>", "contentMap": { "en": "<p>Firefox 137 Released with Tab Groups, Address Bar Revamp + More</p><p>Tab grouping is the latest big-ticket feature to be added to Mozilla Firefox, which sees a new stable release roll out from today. Last month’s Firefox 136 update delivered long-requested support for vertical tabs, a redesigned sidebar experience giving easy access to existing and new features (including online AI chatbots), and flipped the switch on AMD video hardware decoding for Linux users. Firefox 137 is an equally big update, bringing tab grouping, a revamped search bar, and a host of other changes. Let’s take a look. Firefox 137: New Features Tab Grouping Firefox 137 brings Tab Groups to users on the stable :sys_more_orange:<br /><a href=\"https://hello.2heng.xin/tags/News\" class=\"mention hashtag\" rel=\"tag\">#<span>News</span></a> <a href=\"https://hello.2heng.xin/tags/AppUpdates\" class=\"mention hashtag\" rel=\"tag\">#<span>AppUpdates</span></a> <a href=\"https://hello.2heng.xin/tags/Firefox\" class=\"mention hashtag\" rel=\"tag\">#<span>Firefox</span></a> <a href=\"https://hello.2heng.xin/tags/Hevc\" class=\"mention hashtag\" rel=\"tag\">#<span>Hevc</span></a> </p><p>:sys_omgubuntu: <a href=\"https://www.omgubuntu.co.uk/2025/04/firefox-137-new-features\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">omgubuntu.co.uk/2025/04/firefo</span><span class=\"invisible\">x-137-new-features</span></a></p>" }, "attachment": [ { "type": "Document", "mediaType": null, "url": "https://i0.wp.com/www.omgubuntu.co.uk/wp-content/uploads/2025/04/firefox-137.jpg?resize=406,232&ssl=1", "name": "Media source: https://i0.wp.com/www.omgubuntu.co.uk/wp-content/uploads/2025/04/firefox-137.jpg?resize=406,232&ssl=1", "blurhash": null } ], "tag": [ { "type": "Hashtag", "href": "https://hello.2heng.xin/tags/news", "name": "#news" }, { "type": "Hashtag", "href": "https://hello.2heng.xin/tags/AppUpdates", "name": "#AppUpdates" }, { "type": "Hashtag", "href": "https://hello.2heng.xin/tags/firefox", "name": "#firefox" }, { "type": "Hashtag", "href": "https://hello.2heng.xin/tags/hevc", "name": "#hevc" }, { "id": "https://hello.2heng.xin/emojis/11788", "type": "Emoji", "name": ":sys_more_orange:", "updated": "2020-07-07T11:38:57Z", "icon": { "type": "Image", "mediaType": "image/png", "url": "https://s3.mashiro.top/mstdn/custom_emojis/images/000/011/788/original/7ef7a484af2e7939.png" } }, { "id": "https://hello.2heng.xin/emojis/11786", "type": "Emoji", "name": ":sys_omgubuntu:", "updated": "2020-07-07T11:38:57Z", "icon": { "type": "Image", "mediaType": "image/png", "url": "https://s3.mashiro.top/mstdn/custom_emojis/images/000/011/786/original/d0451437f379cb90.png" } } ], "replies": { "id": "https://hello.2heng.xin/users/omgubuntu/statuses/114263693969155423/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://hello.2heng.xin/users/omgubuntu/statuses/114263693969155423/replies?only_other_accounts=true&page=true", "partOf": "https://hello.2heng.xin/users/omgubuntu/statuses/114263693969155423/replies", "items": [] } } }