{
  "schemaVersion": 1,
  "measuredAt": "2026-10-29T15:24:56.949Z",
  "browser": "Google Chrome 156.0.8078.48",
  "method": {
    "environment": "Local loopback HTTP server and a fresh Chrome profile for each observation",
    "cacheDisabled": true,
    "bypassServiceWorker": true,
    "cssSlot": "min(100vw - 32px, 960px)",
    "sizes": "(max-width: 992px) calc(100vw - 32px), 960px",
    "payloadMetric": "Decoded HTTP response body bytes; checksum matched against the measured output file",
    "currentSrcMetric": "The browser currentSrc URL, normalized to its public pathname; the ephemeral local origin is omitted",
    "scope": "Image resource selection and payload only, not whole-page loading time"
  },
  "candidates": [
    {
      "width": 400,
      "height": 267,
      "image": "/research/2026-10/outputs/photo-400.jpg",
      "bytes": 12419,
      "sha256": "ef7329abedbdd33f76de49fd633adefdd191c4e133e56661348b3b914072c2ad"
    },
    {
      "width": 800,
      "height": 533,
      "image": "/research/2026-10/outputs/photo-800.jpg",
      "bytes": 39982,
      "sha256": "9ffce346d72649145d5e78a881236e504e187b53c344f45cf00d7e14948f5140"
    },
    {
      "width": 1600,
      "height": 1067,
      "image": "/research/2026-10/outputs/photo-1600.jpg",
      "bytes": 128977,
      "sha256": "8ea69f8829f730f19ca7d919c81f75e7018d1365696c1102e3f0297c3cd90ac7"
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    {
      "width": 4000,
      "height": 2667,
      "image": "/research/2026-10/outputs/photo-4000.jpg",
      "bytes": 595944,
      "sha256": "25cab2265cdb4913d3f4a2a0451bc72a46bcb847ff04f5b43bebee1644fbc88d"
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  ],
  "observations": [
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      "id": "viewport-390-dpr-1",
      "viewportWidth": 390,
      "viewportHeight": 844,
      "devicePixelRatio": 1,
      "renderedWidth": 358,
      "renderedHeight": 238.953125,
      "selectedWidth": 400,
      "currentSrcPath": "/research/2026-10/outputs/photo-400.jpg",
      "status": 200,
      "contentType": "image/jpeg",
      "payloadBytes": 12419,
      "outputSha256": "ef7329abedbdd33f76de49fd633adefdd191c4e133e56661348b3b914072c2ad",
      "fromDiskCache": false,
      "fromServiceWorker": false
    },
    {
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      "devicePixelRatio": 2,
      "renderedWidth": 358,
      "renderedHeight": 238.515625,
      "selectedWidth": 800,
      "currentSrcPath": "/research/2026-10/outputs/photo-800.jpg",
      "status": 200,
      "contentType": "image/jpeg",
      "payloadBytes": 39982,
      "outputSha256": "9ffce346d72649145d5e78a881236e504e187b53c344f45cf00d7e14948f5140",
      "fromDiskCache": false,
      "fromServiceWorker": false
    },
    {
      "id": "viewport-768-dpr-1",
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      "currentSrcPath": "/research/2026-10/outputs/photo-800.jpg",
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      "currentSrcPath": "/research/2026-10/outputs/photo-1600.jpg",
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      "fromDiskCache": false,
      "fromServiceWorker": false
    },
    {
      "id": "viewport-1280-dpr-1",
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      "viewportHeight": 844,
      "devicePixelRatio": 1,
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      "renderedHeight": 640.1875,
      "selectedWidth": 1600,
      "currentSrcPath": "/research/2026-10/outputs/photo-1600.jpg",
      "status": 200,
      "contentType": "image/jpeg",
      "payloadBytes": 128977,
      "outputSha256": "8ea69f8829f730f19ca7d919c81f75e7018d1365696c1102e3f0297c3cd90ac7",
      "fromDiskCache": false,
      "fromServiceWorker": false
    },
    {
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      "currentSrcPath": "/research/2026-10/outputs/photo-4000.jpg",
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}