Example JSON Feed with `<img srcset>`

xkcd.json

{
  "version": "https://jsonfeed.org/version/1.1",
  "title": "xkcd.com with 2x",
  "home_page_url": "https://xkcd.com/",
  "icon": "https://xkcd.com/favicon.ico",
  "author": {
    "name": "Randall Munroe"
  },
  "items": [
    {
      "id": "https://xkcd.com/3118/",
      "content_html": "<img src=\"https://imgs.xkcd.com/comics/inaturalist_animals_and_plants.png\" title=\"Washington, DC: Eastern gray squirrel, Amur honeysuckle. Puerto Rico: Crested anole, sea grape. US as a whole: Mallard, eastern poison ivy.\" alt=\"Washington, DC: Eastern gray squirrel, Amur honeysuckle. Puerto Rico: Crested anole, sea grape. US as a whole: Mallard, eastern poison ivy.\" srcset=\"https://imgs.xkcd.com/comics/inaturalist_animals_and_plants_2x.png 2x\">",
      "url": "https://xkcd.com/3118/",
      "title": "iNaturalist Animals and Plants",
      "image": "https://imgs.xkcd.com/comics/inaturalist_animals_and_plants_2x.png",
      "date_modified": "2025-07-21T00:00:00.000Z",
      "date_published": "2025-07-21T00:00:00.000Z"
    },
    {
      "id": "https://xkcd.com/3117/",
      "content_html": "<img src=\"https://imgs.xkcd.com/comics/replication_crisis.png\" title=\"Maybe encouraging the publication of null results isn't enough--maybe we need a journal devoted to publishing results the study authors find personally annoying.\" alt=\"Maybe encouraging the publication of null results isn't enough--maybe we need a journal devoted to publishing results the study authors find personally annoying.\" srcset=\"https://imgs.xkcd.com/comics/replication_crisis_2x.png 2x\">",
      "url": "https://xkcd.com/3117/",
      "title": "Replication Crisis",
      "image": "https://imgs.xkcd.com/comics/replication_crisis_2x.png",
      "date_modified": "2025-07-18T00:00:00.000Z",
      "date_published": "2025-07-18T00:00:00.000Z"
    },
    {
      "id": "https://xkcd.com/3116/",
      "content_html": "<img src=\"https://imgs.xkcd.com/comics/echo_chamber.png\" title=\"This is almost as bad as the time I signed up for a purely partisan fishing expedition.\" alt=\"This is almost as bad as the time I signed up for a purely partisan fishing expedition.\" srcset=\"https://imgs.xkcd.com/comics/echo_chamber_2x.png 2x\">",
      "url": "https://xkcd.com/3116/",
      "title": "Echo Chamber",
      "image": "https://imgs.xkcd.com/comics/echo_chamber_2x.png",
      "date_modified": "2025-07-16T00:00:00.000Z",
      "date_published": "2025-07-16T00:00:00.000Z"
    },
    {
      "id": "https://xkcd.com/3115/",
      "content_html": "<img src=\"https://imgs.xkcd.com/comics/unsolved_physics_problems.png\" title=\"'Tin pest' makes more sense to me. Tin just doesn't want to be locked down in a shape like that. I get it. But why would any metal want to grow hair??\" alt=\"'Tin pest' makes more sense to me. Tin just doesn't want to be locked down in a shape like that. I get it. But why would any metal want to grow hair??\" srcset=\"https://imgs.xkcd.com/comics/unsolved_physics_problems_2x.png 2x\">",
      "url": "https://xkcd.com/3115/",
      "title": "Unsolved Physics Problems",
      "image": "https://imgs.xkcd.com/comics/unsolved_physics_problems_2x.png",
      "date_modified": "2025-07-14T00:00:00.000Z",
      "date_published": "2025-07-14T00:00:00.000Z"
    }
  ]
}