{
  "generatedAt": "2026-07-17",
  "fixtureVersion": "1.0",
  "encoderVersions": {
    "jpeg": "@jsquash/jpeg 1.5.0 (MozJPEG)",
    "png": "@jsquash/png 3.1.1 + @jsquash/oxipng 2.3.0",
    "webp": "@jsquash/webp 1.5.0 (libwebp)"
  },
  "scope": "Deterministic encoding-size comparison. It excludes decode, resize, watermark and timing measurements.",
  "fixtures": [
    {
      "id": "opaque-product-photo",
      "description": "Deterministic opaque product-photo-like gradient, texture, shelf and product shape.",
      "dimensions": {
        "width": 1600,
        "height": 1200
      },
      "source": {
        "file": "photo-source-q95.jpg",
        "format": "JPEG",
        "setting": "Quality 95",
        "bytes": 578616
      },
      "outputs": [
        {
          "file": "photo-jpeg-q82.jpg",
          "format": "JPEG",
          "setting": "Quality 82",
          "bytes": 235822,
          "savingsPercent": 59.2
        },
        {
          "file": "photo-webp-q82.webp",
          "format": "WebP",
          "setting": "Quality 82",
          "bytes": 323606,
          "savingsPercent": 44.1
        }
      ]
    },
    {
      "id": "transparent-product-card",
      "description": "Deterministic transparent product-card fixture with a translucent ring and opaque badge.",
      "dimensions": {
        "width": 1200,
        "height": 1200
      },
      "source": {
        "file": "transparent-source.png",
        "format": "PNG",
        "setting": "Unoptimised lossless PNG",
        "bytes": 1541671
      },
      "outputs": [
        {
          "file": "transparent-png-oxipng-l2.png",
          "format": "PNG",
          "setting": "OxiPNG level 2",
          "bytes": 67465,
          "savingsPercent": 95.6
        },
        {
          "file": "transparent-webp-q82.webp",
          "format": "WebP",
          "setting": "Quality 82 with alpha",
          "bytes": 80516,
          "savingsPercent": 94.8
        }
      ]
    }
  ]
}