{
  "date": "2026-10-24",
  "scope": "Original fictional English images; desktop browser and 390px browser width, not a physical phone. No physical drag/drop claim.",
  "method": "Browser file chooser -> Create PDF -> actual PDF download -> Poppler rendering, every primary page viewed, independent decoded image and placement comparison. EXIF orientations 1-8 checked against Pillow EXIF transpose, not arbitrary visual correction.",
  "records": [
    {
      "pdf": "letter-auto.pdf",
      "page": 1,
      "source": "portrait-receipt.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        612.0,
        792.0
      ],
      "image_pixels": [
        850,
        1100
      ],
      "image_matrix": [
        576.0,
        0.0,
        0.0,
        745.4117647058823,
        18.0,
        23.294117647058783
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "letter-auto.pdf",
      "page": 2,
      "source": "transparent-chart.png",
      "rotation_clockwise": 0,
      "page_points": [
        792.0,
        612.0
      ],
      "image_pixels": [
        1100,
        700
      ],
      "image_matrix": [
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        0.0,
        481.09090909090907,
        18.0,
        65.4545454545455
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "letter-auto.pdf",
      "page": 3,
      "source": "camera-orientation.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        612.0,
        792.0
      ],
      "image_pixels": [
        800,
        1100
      ],
      "image_matrix": [
        549.8181818181818,
        0.0,
        0.0,
        756.0,
        31.090909090909122,
        18.0
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "a4-reordered.pdf",
      "page": 1,
      "source": "portrait-receipt.jpg",
      "rotation_clockwise": 90,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        1100,
        850
      ],
      "image_matrix": [
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        0.0,
        0.0,
        404.35272727272724,
        36.0,
        218.76863636363635
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "a4-reordered.pdf",
      "page": 2,
      "source": "camera-orientation.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        800,
        1100
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        719.51,
        36.0,
        61.18999999999994
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "a4-reordered.pdf",
      "page": 3,
      "source": "transparent-chart.png",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        1100,
        700
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        332.9963636363636,
        36.0,
        254.44681818181823
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "exif-eight.pdf",
      "page": 1,
      "source": "exif-1.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        850,
        1100
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        677.1858823529411,
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "exif-eight.pdf",
      "page": 2,
      "source": "exif-2.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        850,
        1100
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        677.1858823529411,
        36.0,
        82.35205882352943
      ],
      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "exif-eight.pdf",
      "page": 3,
      "source": "exif-3.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        850,
        1100
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        677.1858823529411,
        36.0,
        82.35205882352943
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "exif-eight.pdf",
      "page": 4,
      "source": "exif-4.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        850,
        1100
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        677.1858823529411,
        36.0,
        82.35205882352943
      ],
      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "exif-eight.pdf",
      "page": 5,
      "source": "exif-5.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        1100,
        850
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        404.35272727272724,
        36.0,
        218.76863636363635
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "exif-eight.pdf",
      "page": 6,
      "source": "exif-6.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        1100,
        850
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        404.35272727272724,
        36.0,
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "exif-eight.pdf",
      "page": 7,
      "source": "exif-7.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        1100,
        850
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        404.35272727272724,
        36.0,
        218.76863636363635
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      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "exif-eight.pdf",
      "page": 8,
      "source": "exif-8.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        595.28,
        841.89
      ],
      "image_pixels": [
        1100,
        850
      ],
      "image_matrix": [
        523.28,
        0.0,
        0.0,
        404.35272727272724,
        36.0,
        218.76863636363635
      ],
      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    },
    {
      "pdf": "single-landscape.pdf",
      "page": 1,
      "source": "portrait-receipt.jpg",
      "rotation_clockwise": 0,
      "page_points": [
        792.0,
        612.0
      ],
      "image_pixels": [
        850,
        1100
      ],
      "image_matrix": [
        472.90909090909093,
        0.0,
        0.0,
        612.0,
        159.54545454545453,
        0.0
      ],
      "decoded_pixel_mean_abs_error": 0.0,
      "placement_in_bounds": true,
      "aspect_ratio_preserved": true,
      "text_layer": false
    }
  ],
  "mobile": "Three-page Letter result has the same PDF page content streams and embedded image bytes as desktop. Width390, document client375 and scroll375.",
  "guards": [
    {
      "files": [
        "too-many-pixels.png"
      ],
      "status": "Image dimension limit: too-many-pixels.png exceeds 12 million pixels or 10,000 pixels on one side."
    },
    {
      "files": [
        "too-wide.png"
      ],
      "status": "Image dimension limit: too-wide.png exceeds 12 million pixels or 10,000 pixels on one side."
    },
    {
      "files": [
        "over-size.jpg"
      ],
      "status": "Combined input size limit: the selected images exceed 30 MiB. Choose fewer or smaller files."
    },
    {
      "files": [
        "count-00.png",
        "count-01.png",
        "count-02.png",
        "count-03.png",
        "count-04.png",
        "count-05.png",
        "count-06.png",
        "count-07.png",
        "count-08.png",
        "count-09.png",
        "count-10.png",
        "count-11.png",
        "count-12.png",
        "count-13.png",
        "count-14.png",
        "count-15.png",
        "count-16.png",
        "count-17.png",
        "count-18.png",
        "count-19.png",
        "count-20.png"
      ],
      "status": "Image count limit: choose no more than 20 images in one PDF."
    },
    {
      "files": [
        "pixel-1.png",
        "pixel-2.png",
        "pixel-3.png",
        "pixel-4.png",
        "pixel-5.png",
        "pixel-6.png"
      ],
      "status": "Total pixel limit: the selected images exceed 60 million pixels. Choose fewer images."
    }
  ],
  "additional_guards": [
    "Invalid JPG bytes: rejected as unreadable; no output."
  ],
  "unverified": [
    "Physical phone",
    "Physical file drag/drop (not offered by this interface)",
    "Output100MiB boundary",
    "20-image successful boundary run",
    "Peak memory and speed benchmark",
    "Unusual ICC color profiles"
  ],
  "sources": [
    {
      "file": "a4-reordered.pdf",
      "sha256": "480fa0e24621dd03705a30d4a56a1f871860be5bf9b81b5321fbc09646f6647f",
      "bytes": 390428
    },
    {
      "file": "camera-orientation.jpg",
      "sha256": "aed5c81e555695a73fe5295744b746ac74b73121f5ad5fc1766974eb6e45468c",
      "bytes": 92891
    },
    {
      "file": "exif-eight.pdf",
      "sha256": "951fa2912e7cd3056e6d3d2bd1a15f23e6014344be20e2357123726b2687e32a",
      "bytes": 1362030
    },
    {
      "file": "letter-auto.pdf",
      "sha256": "1adbd0e999554616da9797121fc4f33dd69817c5593875908bbc3ece3e0527b2",
      "bytes": 388337
    },
    {
      "file": "portrait-receipt.jpg",
      "sha256": "c855bd3218965e4810130aae0137f3db93c940a0ef33ceadc60e13098e03e26b",
      "bytes": 92504
    },
    {
      "file": "single-landscape.pdf",
      "sha256": "0faf5d7bc1311caa235a2d71efb9da74231a3e1cabd5f715e64abaab2d311fdf",
      "bytes": 169660
    },
    {
      "file": "transparent-chart.png",
      "sha256": "61ccd7ae2d056e838213c0021ef9e8e75170518571a24fcbfe2bbb05a5e242f4",
      "bytes": 33122
    }
  ]
}