{
  "schema_version": 1,
  "test_id": "W2D-OCR-20261003-A",
  "test_date": "2026-10-03",
  "validation_recorded_at_utc": "2026-10-03T09:26:27Z",
  "environment": {
    "browser": "Chrome",
    "execution": "remote cloud browser",
    "vendor_access": "Public online OCR interfaces; no sign-in or payment used",
    "editions": [
      "PDF24 Tools online OCR",
      "Sejda online OCR"
    ]
  },
  "source": {
    "type": "synthetic",
    "language": "English",
    "pages": 1,
    "width_pixels": 1654,
    "height_pixels": 2339,
    "png_dpi": 200,
    "png": "inputs/w2d-ocr-synthetic-a.png",
    "image_only_pdf": "inputs/w2d-ocr-synthetic-a-image-only.pdf",
    "ground_truth": "inputs/w2d-ocr-synthetic-a-ground-truth.txt",
    "same_decoded_rgb_pixels": true,
    "input_pdf_has_text": false,
    "pixel_sha256": "b6d2fb6f8a3b5c8ff4b38a841729508e87a0c5d40c0591c03db5144c85ce0f81"
  },
  "runs": [
    {
      "vendor": "PDF24",
      "public_source_url": "https://tools.pdf24.org/en/ocr-pdf",
      "input": "inputs/w2d-ocr-synthetic-a.png",
      "settings": {
        "language": "English",
        "output": "PDF",
        "remove_background": false,
        "rotate": false,
        "deskew": false,
        "clean": false,
        "force_ocr": false,
        "combine": false
      },
      "result": "completed",
      "vendor_reported_words": 105,
      "outputs": [
        "outputs/pdf24-ocr-output.pdf"
      ],
      "render_inspected": true,
      "text_extraction_verified": true,
      "marker_searches_verified": [
        "COPPER-FALCON-742",
        "ZX-1048",
        "239.40"
      ],
      "symbol_row_match": false,
      "screenshot": "evidence/pdf24-complete.png"
    },
    {
      "vendor": "Sejda",
      "public_source_url": "https://www.sejda.com/ocr-pdf",
      "input": "inputs/w2d-ocr-synthetic-a-image-only.pdf",
      "settings": {
        "language": "English",
        "outputs": [
          "PDF",
          "Text"
        ],
        "page_scope": "all pages"
      },
      "result": "completed",
      "outputs": [
        "outputs/sejda-original-download.zip",
        "outputs/sejda-ocr-output.pdf",
        "outputs/sejda-vendor-text-output.txt"
      ],
      "render_inspected": true,
      "text_extraction_verified": true,
      "marker_searches_verified": [
        "COPPER-FALCON-742",
        "ZX-1048",
        "239.40"
      ],
      "symbol_row_match": false,
      "screenshot": "evidence/sejda-complete.png"
    }
  ],
  "validation": {
    "methods": [
      "Poppler PDF rendering and visual inspection",
      "Poppler pdftotext -layout",
      "PyMuPDF text extraction and search_for bounding rectangles",
      "pypdf text extraction",
      "Decoded RGB pixel equality for source PNG and image-only PDF"
    ],
    "output_validation": "evidence/output-validation.json",
    "input_validation": "evidence/input-validation.json"
  },
  "finding": "Both actual runs returned readable single-page PDFs with extractable text and matches for three named search strings; both extracted symbol rows differed from the source.",
  "limitations": [
    "One clean synthetic English page and one run per vendor",
    "Different input formats with identical source pixels",
    "No accuracy score or overall winner",
    "No document-editability claim",
    "No handwriting, mixed-language, damaged-scan or complex-layout conclusion",
    "No measured speed, privacy/security or long-term free-limit conclusion"
  ],
  "artifacts": [
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      "path": "inputs/w2d-ocr-synthetic-a-ground-truth.txt",
      "bytes": 806,
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    {
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    {
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      "bytes": 63233,
      "sha256": "79c3a3876bfdf67e551008021fe6d28f6a3225f805fe8bb6caa6754f978cb999"
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    {
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  "publication_note": "Public evidence subset: original input/output bytes, local extraction results, validation records and screenshots. Raw session DOM, job URLs and research scripts are not published."
}