{
  "date": "2026-11-01",
  "browser": "Microsoft Edge headless 156.0.4314.58",
  "scope": "Synthetic static self-contained SVGs, local production implementation; decoded independently with Pillow. No competitor conversion, physical phone or destination CMS tested.",
  "cases": [
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      "date": "2026-11-01",
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      ],
      "image_coding": "VP8"
    },
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      "id": "badge-q80",
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      "background": "transparent",
      "date": "2026-11-01",
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      "image_coding": "VP8"
    },
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      "id": "badge-q100",
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      "background": "transparent",
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      "riff_chunks": [
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        "VP8L"
      ],
      "image_coding": "VP8L"
    },
    {
      "id": "badge-640-q80",
      "input": "alpha-badge.svg",
      "output": "badge-640-q80.webp",
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      "background": "transparent",
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      "riff_chunks": [
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      "image_coding": "VP8"
    },
    {
      "id": "badge-white-q80",
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      "background": "white",
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      "visible_rgb_changed_pixels": 36668,
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        "ICCP",
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      "image_coding": "VP8"
    },
    {
      "id": "drawn-white-q80",
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      "output": "drawn-white-q80.webp",
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      "background": "transparent",
      "date": "2026-11-01",
      "actual_conversion": true,
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      "alpha_counts": {
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        "partial": 0,
        "opaque": 64000
      },
      "riff_chunks": [
        "VP8X",
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      ],
      "image_coding": "VP8"
    },
    {
      "id": "tiny-q80",
      "input": "tiny-mark.svg",
      "output": "tiny-q80.webp",
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      "output_bytes": 1000,
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      "quality": 80,
      "background": "transparent",
      "date": "2026-11-01",
      "actual_conversion": true,
      "mime": "image/webp",
      "alpha_counts": {
        "zero": 2792,
        "partial": 120,
        "opaque": 1184
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      "riff_chunks": [
        "VP8X",
        "ICCP",
        "ALPH",
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      ],
      "image_coding": "VP8"
    },
    {
      "id": "shifted-q80",
      "input": "shifted-box.svg",
      "output": "shifted-q80.webp",
      "input_bytes": 142,
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      "quality": 80,
      "background": "transparent",
      "date": "2026-11-01",
      "actual_conversion": true,
      "mime": "image/webp",
      "alpha_counts": {
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        "partial": 380,
        "opaque": 11096
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      "riff_chunks": [
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        "ICCP",
        "ALPH",
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      "image_coding": "VP8"
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  ],
  "references": [
    {
      "file": "badge-640-reference.png",
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      "dimensions": [
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      "dimensions": [
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  ],
  "rejections": [
    {
      "control": "script",
      "error": "This SVG contains unsupported external or active content.",
      "rejected": true
    },
    {
      "control": "animate",
      "error": "This SVG contains unsupported external or active content.",
      "rejected": true
    },
    {
      "control": "foreign-object",
      "error": "This SVG contains unsupported external or active content.",
      "rejected": true
    },
    {
      "control": "image",
      "error": "This SVG contains unsupported external or active content.",
      "rejected": true
    },
    {
      "control": "external",
      "error": "This SVG refers to an external resource.",
      "rejected": true
    },
    {
      "control": "style",
      "error": "This SVG contains unsupported external or active content.",
      "rejected": true
    },
    {
      "control": "inline-style",
      "error": "This SVG contains unsupported external or active content.",
      "rejected": true
    },
    {
      "control": "use",
      "error": "This SVG contains unsupported external or active content.",
      "rejected": true
    },
    {
      "control": "doctype",
      "error": "SVG files with document types or entities are not supported.",
      "rejected": true
    },
    {
      "control": "namespace",
      "error": "This file is not a valid SVG.",
      "rejected": true
    },
    {
      "control": "source-side",
      "error": "SVG needs finite dimensions or a viewBox, up to 4096 pixels per side.",
      "rejected": true
    },
    {
      "control": "source-pixels",
      "error": "SVG needs finite dimensions or a viewBox, up to 4096 pixels per side.",
      "rejected": true
    },
    {
      "control": "output-zero",
      "error": "Output must be no larger than 4096 px per side or 16 million pixels total.",
      "rejected": true
    },
    {
      "control": "output-fraction",
      "error": "Output must be no larger than 4096 px per side or 16 million pixels total.",
      "rejected": true
    },
    {
      "control": "output-side",
      "error": "Output must be no larger than 4096 px per side or 16 million pixels total.",
      "rejected": true
    },
    {
      "control": "output-pixels",
      "error": "Output must be no larger than 4096 px per side or 16 million pixels total.",
      "rejected": true
    },
    {
      "control": "quality-low",
      "error": "Choose a WebP quality from 20 to 100.",
      "rejected": true
    },
    {
      "control": "quality-nan",
      "error": "Choose a WebP quality from 20 to 100.",
      "rejected": true
    },
    {
      "control": "browser-PNG-fallback",
      "error": "This browser cannot create WebP files. Try a browser with WebP encoding support.",
      "rejected": true
    }
  ],
  "ui_checks": [
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      "language": "en",
      "viewport": 1440,
      "actual_download": true,
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      "horizontal_overflow": false
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      "horizontal_overflow": false
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}