{
  "performed_at": "2026-09-12",
  "browser": "Chrome 152.0.7977.76",
  "platform": "macOS",
  "device_pixel_ratio": 2,
  "specimen": "Georgia (macOS system font), original TTF vs its own WOFF2",
  "note": "The WOFF2 was produced from the exact TTF on the same machine. No subsetting, no hint removal. Fonts are not redistributed with this package.",
  "comparisons": [
    {
      "label": "28px, Polish diacritics + euro + en dash + ellipsis",
      "text": "„Zażółć gęślą jaźń” — 129 €; 9–17…",
      "size_px": 28,
      "width_ttf_px": 429.805,
      "width_woff2_px": 429.805,
      "width_delta_px": 0.0,
      "differing_canvas_pixels": 0
    },
    {
      "label": "16px, ligatures + kerning pairs",
      "text": "Hamburgefonstiv 0123456789 fi fl ffi — AV To Wa",
      "size_px": 16,
      "width_ttf_px": 328.633,
      "width_woff2_px": 328.633,
      "width_delta_px": 0.0,
      "differing_canvas_pixels": 0
    }
  ],
  "limitations": [
    "One browser, one platform, two strings, two sizes.",
    "Not a cross-browser certification and not a complete test of the font's features.",
    "Canvas pixel comparison uses the red channel of getImageData on a 1400px canvas."
  ]
}