{
  "schemaVersion": 1,
  "implementationRevision": "590bbf08968f0f12c32bb4aa5c84627ba5dbeab4",
  "implementationSourceSha256": "088ba519315f3498cd388eaf0c7bef92c0a15c6702107e04219ed486760332ca",
  "implementationDirty": true,
  "date": "2026-10-01T14:27:33.046Z",
  "browser": "151.0.7922.34",
  "fixture": {
    "path": "benchmark/fixtures/jpegxl/generated-vardct-v0.12.0/rgb8-distance1-multi-group-progressive.jxl",
    "sha256": "a4e09109bd4028c7cefbe570728d867b1733a8ea06785fc48e4595e5f5a2c8ef",
    "bytes": 148917
  },
  "rows": [
    {
      "subject": "purejsimage",
      "repeat": 0,
      "result": {
        "status": "verified",
        "firstUsefulMs": 59.80000001192093,
        "firstTransferred": 20544,
        "transferredTotal": 67431,
        "reads": [
          {
            "offset": 0,
            "requested": 12,
            "transferred": 12
          },
          {
            "offset": 0,
            "requested": 4096,
            "transferred": 4096
          },
          {
            "offset": 10829,
            "requested": 4096,
            "transferred": 4096
          },
          {
            "offset": 25,
            "requested": 10804,
            "transferred": 10804
          },
          {
            "offset": 10887,
            "requested": 109,
            "transferred": 109
          },
          {
            "offset": 10996,
            "requested": 1427,
            "transferred": 1427
          },
          {
            "offset": 12423,
            "requested": 3069,
            "transferred": 3069
          },
          {
            "offset": 21495,
            "requested": 6031,
            "transferred": 6031
          },
          {
            "offset": 39944,
            "requested": 5838,
            "transferred": 5838
          },
          {
            "offset": 83711,
            "requested": 31949,
            "transferred": 31949
          }
        ],
        "stages": [
          {
            "kind": "dc",
            "width": 16,
            "height": 16,
            "groups": [0]
          },
          {
            "kind": "pass",
            "width": 16,
            "height": 16,
            "groups": [0]
          },
          {
            "kind": "pass",
            "width": 16,
            "height": 16,
            "groups": [0]
          },
          {
            "kind": "final",
            "width": 16,
            "height": 16,
            "groups": [0]
          }
        ],
        "scope": "HTTP Range source, 32x32 region at scale 2; first nonempty pixel block; no canvas upload; geometry-only preview check"
      }
    },
    {
      "subject": "purejsimage",
      "repeat": 1,
      "result": {
        "status": "verified",
        "firstUsefulMs": 59.89999997615814,
        "firstTransferred": 20544,
        "transferredTotal": 67431,
        "reads": [
          {
            "offset": 0,
            "requested": 12,
            "transferred": 12
          },
          {
            "offset": 0,
            "requested": 4096,
            "transferred": 4096
          },
          {
            "offset": 10829,
            "requested": 4096,
            "transferred": 4096
          },
          {
            "offset": 25,
            "requested": 10804,
            "transferred": 10804
          },
          {
            "offset": 10887,
            "requested": 109,
            "transferred": 109
          },
          {
            "offset": 10996,
            "requested": 1427,
            "transferred": 1427
          },
          {
            "offset": 12423,
            "requested": 3069,
            "transferred": 3069
          },
          {
            "offset": 21495,
            "requested": 6031,
            "transferred": 6031
          },
          {
            "offset": 39944,
            "requested": 5838,
            "transferred": 5838
          },
          {
            "offset": 83711,
            "requested": 31949,
            "transferred": 31949
          }
        ],
        "stages": [
          {
            "kind": "dc",
            "width": 16,
            "height": 16,
            "groups": [0]
          },
          {
            "kind": "pass",
            "width": 16,
            "height": 16,
            "groups": [0]
          },
          {
            "kind": "pass",
            "width": 16,
            "height": 16,
            "groups": [0]
          },
          {
            "kind": "final",
            "width": 16,
            "height": 16,
            "groups": [0]
          }
        ],
        "scope": "HTTP Range source, 32x32 region at scale 2; first nonempty pixel block; no canvas upload; geometry-only preview check"
      }
    },
    {
      "subject": "purejsimage",
      "repeat": 2,
      "result": {
        "status": "verified",
        "firstUsefulMs": 60.599999994039536,
        "firstTransferred": 20544,
        "transferredTotal": 67431,
        "reads": [
          {
            "offset": 0,
            "requested": 12,
            "transferred": 12
          },
          {
            "offset": 0,
            "requested": 4096,
            "transferred": 4096
          },
          {
            "offset": 10829,
            "requested": 4096,
            "transferred": 4096
          },
          {
            "offset": 25,
            "requested": 10804,
            "transferred": 10804
          },
          {
            "offset": 10887,
            "requested": 109,
            "transferred": 109
          },
          {
            "offset": 10996,
            "requested": 1427,
            "transferred": 1427
          },
          {
            "offset": 12423,
            "requested": 3069,
            "transferred": 3069
          },
          {
            "offset": 21495,
            "requested": 6031,
            "transferred": 6031
          },
          {
            "offset": 39944,
            "requested": 5838,
            "transferred": 5838
          },
          {
            "offset": 83711,
            "requested": 31949,
            "transferred": 31949
          }
        ],
        "stages": [
          {
            "kind": "dc",
            "width": 16,
            "height": 16,
            "groups": [0]
          },
          {
            "kind": "pass",
            "width": 16,
            "height": 16,
            "groups": [0]
          },
          {
            "kind": "pass",
            "width": 16,
            "height": 16,
            "groups": [0]
          },
          {
            "kind": "final",
            "width": 16,
            "height": 16,
            "groups": [0]
          }
        ],
        "scope": "HTTP Range source, 32x32 region at scale 2; first nonempty pixel block; no canvas upload; geometry-only preview check"
      }
    },
    {
      "subject": "oxide",
      "repeat": 0,
      "result": {
        "status": "verified",
        "firstUsefulMs": 59.099999994039536,
        "firstTransferred": 4096,
        "delivered": 4096,
        "inputBytes": 148917,
        "pngBytes": 13852,
        "beforeComplete": true,
        "reads": [
          {
            "offset": 0,
            "requested": 4096,
            "transferred": 4096
          }
        ],
        "scope": "Sequential 4096-byte HTTP chunks; first render exported to PNG; full frame, no reduced-resolution API, no canvas upload"
      }
    },
    {
      "subject": "oxide",
      "repeat": 1,
      "result": {
        "status": "verified",
        "firstUsefulMs": 66.90000000596046,
        "firstTransferred": 4096,
        "delivered": 4096,
        "inputBytes": 148917,
        "pngBytes": 13852,
        "beforeComplete": true,
        "reads": [
          {
            "offset": 0,
            "requested": 4096,
            "transferred": 4096
          }
        ],
        "scope": "Sequential 4096-byte HTTP chunks; first render exported to PNG; full frame, no reduced-resolution API, no canvas upload"
      }
    },
    {
      "subject": "oxide",
      "repeat": 2,
      "result": {
        "status": "verified",
        "firstUsefulMs": 61.89999997615814,
        "firstTransferred": 4096,
        "delivered": 4096,
        "inputBytes": 148917,
        "pngBytes": 13852,
        "beforeComplete": true,
        "reads": [
          {
            "offset": 0,
            "requested": 4096,
            "transferred": 4096
          }
        ],
        "scope": "Sequential 4096-byte HTTP chunks; first render exported to PNG; full frame, no reduced-resolution API, no canvas upload"
      }
    }
  ],
  "limitations": "Loopback HTTP, no latency/bandwidth emulation. PureJsImage requests a region at scale 2; oxide renders a full frame and exports PNG. Preview workloads differ and timings must not be ranked as equivalent. Requested and transferred source bytes exclude JS/WASM assets, enumerated separately."
}