{
  "measuredAt": "2026-08-18T12:13:41.859Z",
  "next": "16.3.1",
  "note": "Next 16 defaults images.formats to [\"image/webp\"], so a browser advertising WebP gets WebP. next.config.mjs in this fixture does not override it.",
  "source": {
    "file": "public/hero.jpg",
    "bytes": 252729,
    "contentType": "image/jpeg"
  },
  "results": [
    {
      "width": 750,
      "accept": "chrome (webp offered)",
      "contentType": "image/webp",
      "bytes": 66580,
      "kb": 65
    },
    {
      "width": 750,
      "accept": "jpeg only",
      "contentType": "image/jpeg",
      "bytes": 40281,
      "kb": 39
    },
    {
      "width": 3840,
      "accept": "chrome (webp offered)",
      "contentType": "image/webp",
      "bytes": 407912,
      "kb": 398
    },
    {
      "width": 3840,
      "accept": "jpeg only",
      "contentType": "image/jpeg",
      "bytes": 287539,
      "kb": 281
    }
  ]
}