{
  "schemaVersion": 1,
  "preparedAt": "2026-10-08",
  "baseUrl": "/examples/showcase/",
  "purpose": "Downloadable existing engineering evidence; no user reviews or testimonials.",
  "limitations": [
    "References are licensed engineering test preparations, not real-user artwork or adoption evidence.",
    "Heart and gear have recorded browser conversion and independent SVG/DXF checks only; no native target-software imports recorded for those examples.",
    "The LightBurn evidence covers only the self-made calibration in version 2.1.04 Core on the recorded macOS platform.",
    "No Cricut, hardware, toolpath, material compensation, machining accuracy or general software compatibility validation.",
    "Pixel-boundary contours contain horizontal/vertical segments, not reconstructed Bezier curves or arcs; JPEG and threshold affect edges.",
    "Zero pixel mismatch means agreement with the thresholded binary raster at source resolution, not original continuous curves or machining accuracy.",
    "Self-intersection is not checked; closed geometry and parser acceptance are bounded checks.",
    "No separate redistribution license is recorded for the project calibration or LightBurn interface screenshots; third-party icon MIT terms are retained in full."
  ],
  "examples": [
    {
      "id": "heart-jpg",
      "kind": "licensed-public-reference-engineering-example",
      "input": "heart-jpg.jpg",
      "svg": "heart-jpg.svg",
      "dxf": "heart-jpg.dxf",
      "preview": "heart-jpg-preview.png",
      "inputDimensionsPx": {
        "width": 512,
        "height": 512
      },
      "outputDimensionsMm": {
        "width": 100,
        "height": 93.75
      },
      "parameters": {
        "threshold": 128,
        "invert": false,
        "denoise": 0,
        "reduceNodes": false
      },
      "parameterEvidence": "results case overrides and recorded-hash tests/reference-images.cjs; fresh navigation uses session defaults. All output segments match the unreduced pixel-boundary model.",
      "preparation": {
        "sourceRasterization": "512 x 512 white background with margins",
        "jpegQuality": 0.35
      },
      "algorithmVersion": "pixel-boundary-1",
      "testedAt": "2026-10-07T09:08:26.232Z",
      "browser": "Playwright Chromium",
      "browserVersion": "151.0.7922.34",
      "testSha256": "b0981abb9a9265e8c1d0ab78ba947141a8a538ba5ac98021e3ec52cee2fa2372",
      "workerBundleSha256": "dd8a6b960b96ae2a576167c6ea73e31a19fa573126304a99fbb479e8684df871",
      "contours": 1,
      "outerContours": 1,
      "holes": 0,
      "vertices": 1244,
      "recordedChecks": {
        "status": "pass",
        "SVGFillRule": "evenodd",
        "binaryPixelMismatches": 0,
        "maxSVGDXFCoordinateErrorMm": 1.7763568394002505e-15,
        "SVGUnsafeElementCount": 0,
        "closedDXFLWPolylines": true,
        "DXFINSUNITS": 4
      },
      "source": {
        "name": "heart-fill",
        "pageUrl": "https://icons.getbootstrap.com/icons/heart-fill/",
        "sourceUrl": "https://raw.githubusercontent.com/twbs/icons/v1.13.1/icons/heart-fill.svg",
        "mirrorUrl": null,
        "sha256": "2903966b0b1a314d61485658ec700fea9ac4b996621fbbc08117da1f35896b69",
        "version": "v1.13.1",
        "author": "The Bootstrap Authors",
        "license": "MIT",
        "licenseUrl": "https://github.com/twbs/icons/blob/v1.13.1/LICENSE",
        "licenseFile": "BOOTSTRAP-LICENSE.txt",
        "originalFile": "sources/heart-fill.svg",
        "retrievedAt": "2026-10-07T08:59:27.128Z"
      },
      "targetSoftwareImport": "not verified for this reference example"
    },
    {
      "id": "gear",
      "kind": "licensed-public-reference-engineering-example",
      "input": "gear.png",
      "svg": "gear.svg",
      "dxf": "gear.dxf",
      "preview": "gear-preview.png",
      "inputDimensionsPx": {
        "width": 512,
        "height": 512
      },
      "outputDimensionsMm": {
        "width": 100,
        "height": 100
      },
      "parameters": {
        "threshold": 128,
        "invert": false,
        "denoise": 0,
        "reduceNodes": false
      },
      "parameterEvidence": "results case overrides and recorded-hash tests/reference-images.cjs; fresh navigation uses session defaults. All output segments match the unreduced pixel-boundary model.",
      "preparation": {
        "sourceRasterization": "512 x 512 white background with margins",
        "jpegQuality": null
      },
      "algorithmVersion": "pixel-boundary-1",
      "testedAt": "2026-10-07T09:08:26.232Z",
      "browser": "Playwright Chromium",
      "browserVersion": "151.0.7922.34",
      "testSha256": "b0981abb9a9265e8c1d0ab78ba947141a8a538ba5ac98021e3ec52cee2fa2372",
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      "contours": 4,
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      "holes": 3,
      "vertices": 2548,
      "recordedChecks": {
        "status": "pass",
        "SVGFillRule": "evenodd",
        "binaryPixelMismatches": 0,
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      "source": {
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        "pageUrl": "https://icons.getbootstrap.com/icons/gear-wide-connected/",
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        "mirrorUrl": "https://cdn.jsdelivr.net/npm/bootstrap-icons@1.13.1/icons/gear-wide-connected.svg",
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        "author": "The Bootstrap Authors",
        "license": "MIT",
        "licenseUrl": "https://github.com/twbs/icons/blob/v1.13.1/LICENSE",
        "licenseFile": "BOOTSTRAP-LICENSE.txt",
        "originalFile": "sources/gear-wide-connected.svg",
        "retrievedAt": "2026-10-07T08:59:27.128Z"
      },
      "targetSoftwareImport": "not verified for this reference example"
    },
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      "dxf": "calibration-100x70.dxf",
      "preview": "calibration-100x70.svg",
      "inputDimensionsPx": {
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        "height": 70
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      "outputDimensionsMm": {
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        "height": 70
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      "parameters": {
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        "invert": false,
        "denoise": 0,
        "reduceNodes": false
      },
      "parameterEvidence": "scripts/import-calibration.ts constructs the binary fixture directly, then scales/exports it; PNG is the same fixture, not a separately recorded workbench conversion.",
      "algorithmVersion": "pixel-boundary-1",
      "generatedAt": null,
      "generationDateLimitation": "Exact generation timestamp is absent from expected.json; files are bound by hashes to the dated native import record.",
      "contours": 3,
      "outerContours": 2,
      "holes": 1,
      "vertices": 14,
      "topology": [
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          "role": "outer"
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        {
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          "role": "hole"
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        {
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          "role": "outer"
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      ],
      "hole": {
        "xMm": 20,
        "yMm": 15,
        "widthMm": 50,
        "heightMm": 40
      },
      "island": {
        "xMm": 40,
        "yMm": 30,
        "widthMm": 10,
        "heightMm": 10
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      "notch": "20 x 15 mm at the bottom-right in image/SVG coordinates; DXF coordinates have Y up",
      "source": {
        "author": "SVG / DXF Tools project",
        "sourceKind": "self-made-engineering",
        "sourceFile": "scripts/import-calibration.ts",
        "sourceSha256": "e0a569fc781fa9c99d3609ff92991930ab745408d2316029bb170660951017fe",
        "pageUrl": null,
        "sourceUrl": null,
        "license": "Project-created engineering fixture; no third-party artwork or separate asset license declaration recorded.",
        "licenseFile": null
      },
      "nativeImport": {
        "software": "LightBurn",
        "version": "2.1.04 Core",
        "platform": "macOS 26.6.2 (25G83), Apple Silicon, official x86_64 app",
        "checkedAt": "2026-10-07T11:35:22.510310+00:00",
        "profile": "Built-in No Machine dummy profile; no hardware connected or jobs sent",
        "formats": [
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            "sourceKind": "self-made-engineering",
            "expectedWidthMm": 100,
            "expectedHeightMm": 70,
            "measuredWidthMm": 100,
            "measuredHeightMm": 70,
            "objects": 3,
            "holesCorrect": true,
            "islandCorrect": true,
            "orientationCorrect": true,
            "notch": "bottom right as in PNG",
            "warningsObserved": false,
            "measurement": "Selected-object toolbar shows Width 100.000mm Height 70.000mm; lower status shows 3 objects; grid verifies 50x40 hole and 10x10 island visually",
            "reshape": false
          },
          {
            "format": "dxf",
            "sourceKind": "self-made-engineering",
            "expectedWidthMm": 100,
            "expectedHeightMm": 70,
            "measuredWidthMm": 100,
            "measuredHeightMm": 70,
            "objects": 3,
            "holesCorrect": true,
            "islandCorrect": true,
            "orientationCorrect": true,
            "notch": "bottom right as in PNG",
            "warningsObserved": false,
            "measurement": "Selected-object toolbar shows Width 100.000mm Height 70.000mm; lower status shows 3 objects; grid verifies 50x40 hole and 10x10 island visually",
            "reshape": false
          }
        ],
        "screenshots": {
          "svg": "lightburn-svg-import.png",
          "dxf": "lightburn-dxf-import.png"
        },
        "scope": "One fixture imported separately into two new documents. Toolbar measurements 100.000 x 70.000 mm; hole/island dimensions were checked visually on the grid. No hardware, machining, Cricut or arbitrary-file compatibility validation.",
        "screenshotRights": "Recorded screenshots contain LightBurn interface; LightBurn name and interface belong to their respective owner. Used as engineering evidence; no endorsement or general compatibility claim.",
        "recordSha256": "c18dd71db5324c4f122a034e148e544bcc7a780b9ecaa895f5d87df60fd234a1"
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      "id": "transparent-island-100x70",
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      "input": "transparent-island-100x70.png",
      "svg": "transparent-island-100x70.svg",
      "dxf": "transparent-island-100x70.dxf",
      "preview": "transparent-island-100x70.svg",
      "inputDimensionsPx": {
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        "height": 70
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        "reduceNodes": false
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      "parameterEvidence": "Generated from RGBA through the same thresholdRGBA, traceBinary, scaleTrace and exporters; both exports reparse against model. Not a browser workflow or native software import record.",
      "recordedChecks": {
        "SVGReparse": true,
        "DXFReparse": true,
        "expectedContours": 4,
        "expectedHoles": 2
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      "targetSoftwareImport": "not verified for this transparent example"
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