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" } ], "id": "https://mastodon.social/users/anatudor/statuses/112438663343874370/replies", "type": "Collection", "first": { "id": "https://mastodon.social/users/anatudor/statuses/112438663343874370/replies?page=true", "type": "CollectionPage", "next": "https://mastodon.social/users/anatudor/statuses/112438663343874370/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/anatudor/statuses/112438663343874370/replies", "items": [ { "id": "https://mastodon.social/users/anatudor/statuses/112438774660196368", "type": "Note", "summary": null, "inReplyTo": "https://mastodon.social/users/anatudor/statuses/112438663343874370", "published": "2024-05-14T09:39:04Z", "url": "https://mastodon.social/@anatudor/112438774660196368", "attributedTo": "https://mastodon.social/users/anatudor", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/anatudor/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/anatudor/statuses/112438774660196368", "inReplyToAtomUri": "https://mastodon.social/users/anatudor/statuses/112438663343874370", "conversation": "tag:mastodon.social,2024-05-13:objectId=706695871:objectType=Conversation", "content": "<p>Top layer has all 3 RGB channels 0 in this case ⇒ black inner shadow.</p><p>We paint it orangey using feColorMatrix as detailed here <a href=\"https://mastodon.social/@anatudor/112157559510002242\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">mastodon.social/@anatudor/1121</span><span class=\"invisible\">57559510002242</span></a></p><p>Finally, we put it on top of SourceGraphic (bottom layer in2 input). This is done with the default (normal) mode for feBlend.</p><p><a href=\"https://mastodon.social/tags/svg\" class=\"mention hashtag\" rel=\"tag\">#<span>svg</span></a> <a href=\"https://mastodon.social/tags/filter\" class=\"mention hashtag\" rel=\"tag\">#<span>filter</span></a> <a href=\"https://mastodon.social/tags/svgFilter\" class=\"mention hashtag\" rel=\"tag\">#<span>svgFilter</span></a> <a href=\"https://mastodon.social/tags/blending\" class=\"mention hashtag\" rel=\"tag\">#<span>blending</span></a> <a href=\"https://mastodon.social/tags/compositing\" class=\"mention hashtag\" rel=\"tag\">#<span>compositing</span></a> <a href=\"https://mastodon.social/tags/blendMode\" class=\"mention hashtag\" rel=\"tag\">#<span>blendMode</span></a> <a href=\"https://mastodon.social/tags/alpha\" class=\"mention hashtag\" rel=\"tag\">#<span>alpha</span></a> <a href=\"https://mastodon.social/tags/inset\" class=\"mention hashtag\" rel=\"tag\">#<span>inset</span></a> <a href=\"https://mastodon.social/tags/shadow\" class=\"mention hashtag\" rel=\"tag\">#<span>shadow</span></a> <a href=\"https://mastodon.social/tags/css\" class=\"mention hashtag\" rel=\"tag\">#<span>css</span></a> <a href=\"https://mastodon.social/tags/code\" class=\"mention hashtag\" rel=\"tag\">#<span>code</span></a> <a href=\"https://mastodon.social/tags/coding\" class=\"mention hashtag\" rel=\"tag\">#<span>coding</span></a> <a href=\"https://mastodon.social/tags/web\" class=\"mention hashtag\" rel=\"tag\">#<span>web</span></a> <a href=\"https://mastodon.social/tags/dev\" class=\"mention hashtag\" rel=\"tag\">#<span>dev</span></a> <a href=\"https://mastodon.social/tags/webDev\" class=\"mention hashtag\" rel=\"tag\">#<span>webDev</span></a> <a href=\"https://mastodon.social/tags/frontend\" class=\"mention hashtag\" rel=\"tag\">#<span>frontend</span></a> <a href=\"https://mastodon.social/tags/webDevelopment\" class=\"mention hashtag\" rel=\"tag\">#<span>webDevelopment</span></a></p>", "contentMap": { "en": "<p>Top layer has all 3 RGB channels 0 in this case ⇒ black inner shadow.</p><p>We paint it orangey using feColorMatrix as detailed here <a href=\"https://mastodon.social/@anatudor/112157559510002242\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">mastodon.social/@anatudor/1121</span><span class=\"invisible\">57559510002242</span></a></p><p>Finally, we put it on top of SourceGraphic (bottom layer in2 input). This is done with the default (normal) mode for feBlend.</p><p><a href=\"https://mastodon.social/tags/svg\" class=\"mention hashtag\" rel=\"tag\">#<span>svg</span></a> <a href=\"https://mastodon.social/tags/filter\" class=\"mention hashtag\" rel=\"tag\">#<span>filter</span></a> <a href=\"https://mastodon.social/tags/svgFilter\" class=\"mention hashtag\" rel=\"tag\">#<span>svgFilter</span></a> <a href=\"https://mastodon.social/tags/blending\" class=\"mention hashtag\" rel=\"tag\">#<span>blending</span></a> <a href=\"https://mastodon.social/tags/compositing\" class=\"mention hashtag\" rel=\"tag\">#<span>compositing</span></a> <a href=\"https://mastodon.social/tags/blendMode\" class=\"mention hashtag\" rel=\"tag\">#<span>blendMode</span></a> <a href=\"https://mastodon.social/tags/alpha\" class=\"mention hashtag\" rel=\"tag\">#<span>alpha</span></a> <a href=\"https://mastodon.social/tags/inset\" class=\"mention hashtag\" rel=\"tag\">#<span>inset</span></a> <a href=\"https://mastodon.social/tags/shadow\" class=\"mention hashtag\" rel=\"tag\">#<span>shadow</span></a> <a href=\"https://mastodon.social/tags/css\" class=\"mention hashtag\" rel=\"tag\">#<span>css</span></a> <a href=\"https://mastodon.social/tags/code\" class=\"mention hashtag\" rel=\"tag\">#<span>code</span></a> <a href=\"https://mastodon.social/tags/coding\" class=\"mention hashtag\" rel=\"tag\">#<span>coding</span></a> <a href=\"https://mastodon.social/tags/web\" class=\"mention hashtag\" rel=\"tag\">#<span>web</span></a> <a href=\"https://mastodon.social/tags/dev\" class=\"mention hashtag\" rel=\"tag\">#<span>dev</span></a> <a href=\"https://mastodon.social/tags/webDev\" class=\"mention hashtag\" rel=\"tag\">#<span>webDev</span></a> <a href=\"https://mastodon.social/tags/frontend\" class=\"mention hashtag\" rel=\"tag\">#<span>frontend</span></a> <a href=\"https://mastodon.social/tags/webDevelopment\" class=\"mention hashtag\" rel=\"tag\">#<span>webDevelopment</span></a></p>" }, "attachment": [ { "type": "Document", "mediaType": "image/png", "url": "https://files.mastodon.social/media_attachments/files/112/438/756/048/546/086/original/4ac72aafdcd1ab36.png", "name": "Screenshot of the interactive paint with a certain RGB value demo, with the feColorMatrix primitive using the values from an input[type=color] (which are also displayed in the hex. RGB and percentage RGB formats), a button to copy the SVG filter to clipboard, a visual test area and options to select what the filter gets applied on (text + emojis or a CSS gradient or a .png with transparency or a fully opaque .jpg).", "blurhash": "UfE{Ll^+NGNGR*R*ofs:0K9Zs.s:WCa#j[j?", "focalPoint": [ 0, 0 ], "width": 579, "height": 772 }, { "type": "Document", "mediaType": "image/png", "url": "https://files.mastodon.social/media_attachments/files/112/438/757/077/815/386/original/66e95f83ef0cd41f.png", "name": "Screenshot of the filter and its result up to the point where the black inset shadow is painted orange using feColorMatrix.", "blurhash": "U59Gq3Omx^rs-q%NkBWA~EIVbYxuO?xtRjM|", "focalPoint": [ 0, 0 ], "width": 1216, "height": 509 }, { "type": "Document", "mediaType": "image/png", "url": "https://files.mastodon.social/media_attachments/files/112/438/757/925/342/859/original/a0f8150d54854e50.png", "name": "Final step: the orangey inset shadow is placed on top of the initial image.", "blurhash": "UOEfB101af-;My%MofM{aitQWBjuX9s:j[WC", "focalPoint": [ 0, 0 ], "width": 1225, "height": 514 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/svg", "name": "#svg" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/filter", "name": "#filter" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/SVGFilter", "name": "#SVGFilter" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/blending", "name": "#blending" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/compositing", "name": "#compositing" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/blendmode", "name": "#blendmode" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/alpha", "name": "#alpha" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/inset", "name": "#inset" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/shadow", "name": "#shadow" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/css", "name": "#css" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/code", "name": "#code" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/coding", "name": "#coding" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/web", "name": "#web" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/dev", "name": "#dev" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/webdev", "name": "#webdev" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/frontend", "name": "#frontend" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/webdevelopment", "name": "#webdevelopment" } ], "replies": { "id": "https://mastodon.social/users/anatudor/statuses/112438774660196368/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/anatudor/statuses/112438774660196368/replies?min_id=112438848603111150&page=true", "partOf": "https://mastodon.social/users/anatudor/statuses/112438774660196368/replies", "items": [ "https://mastodon.social/users/anatudor/statuses/112438848603111150" ] } }, "likes": { "id": "https://mastodon.social/users/anatudor/statuses/112438774660196368/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mastodon.social/users/anatudor/statuses/112438774660196368/shares", "type": "Collection", "totalItems": 0 } } ] } }