{
  "date": "2026-10-12",
  "environment": "Codex in-app browser on macOS; Imgkind Canvas compressor; original dimensions; JPEG and WebP quality 80; PNG quality ignored",
  "samples": [
    {
      "sample": "gradient-grid",
      "originalBytes": 706133,
      "width": 960,
      "height": 640,
      "jpgBytes": 61795,
      "webpBytes": 44200,
      "pngBytes": 138496,
      "sha256": {
        "original": "c54af4f082d661ae8520b5919aeb7efdee00a280bebc232de8f147bf6ca1d2b3",
        "jpg": "0acd2c7eedc434fcb221948795a204d3eac0905ea8f1a6c446409e7b1b54d751",
        "webp": "816b69dcec047752223a6a5a7d7444fb2685aa1ec5cc3032c747e9f1a3f16885",
        "png": "0dae63d49ed90fa32275e349a84409815fcdae718ac304b59a50eaf1ce65cd0d"
      }
    },
    {
      "sample": "line-chart",
      "originalBytes": 7864,
      "width": 960,
      "height": 640,
      "jpgBytes": 56394,
      "webpBytes": 11650,
      "pngBytes": 16959,
      "sha256": {
        "original": "d448e722fc24c49af4f25a8bb07ec902c0427b35242e522fe71fa0c9f75886ef",
        "jpg": "0576bba1c7c288f0c4439a30e382dd41637d90bf21d8350142688945a36cc974",
        "webp": "c566784d359f5e7904ce242a0b1618d64f5d2df58d1f1477f0cee9006dec7e5b",
        "png": "a17cbc628ea0183b728fa6eb27f91edd5e2a63e68ce87f19f967c7744b234e0d"
      }
    },
    {
      "sample": "transparent-mark",
      "originalBytes": 12078,
      "width": 512,
      "height": 512,
      "jpgBytes": 7872,
      "webpBytes": 7404,
      "pngBytes": 23522,
      "sha256": {
        "original": "440c4ff7ce5653fc6054ece01672935bc6b3de34f94232d8f1990c698934bb69",
        "jpg": "c1489ac7e60860780d81895794746df2a161d52977e23cc40a34f4fc2e151827",
        "webp": "09514342b41f4500faaa5ccf68bf35f55b925b2f98ed6698c53c44384a749127",
        "png": "fc5822d4d83f80babe8ec4eff5276ae260e08eb4fbafce08339d5d12aa76663f"
      }
    }
  ]
}