{ "schemaVersion": 1, "checkedAt": "2026-10-17 Asia/Shanghai", "publicReportCopy": { "description": "Public basename-only copy of actual synthetic GPS/IFD1 input and product-output observations. Native JPEG and embedded-thumbnail bytes are unchanged.", "noLocalAbsolutePaths": true }, "nativeBytesUnmodified": true, "syntheticMetadataOnly": true, "fixture": { "status": "prepared_input_only", "file": "gps-thumbnail-input.jpg", "bytes": 57157, "sha256": "df5e8cc4506945a6b965dcf87be59864d57904385bf5f040a6b238c322d18fff", "format": "JPEG", "encodedSize": [ 640, 400 ], "sourceSyntheticFile": "metadata-orientation1.jpg", "sourceSyntheticSha256": "21550a048686793b6379ee881319be96362f607392ffa02d20754e920252fbbe", "mainJpegDecodedPixelsUnchanged": true, "mainDecodedRgbSha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df", "ifd0": { "Make": "Doc2X Synthetic QA", "Model": "Not a real camera", "Artist": "Synthetic test fixture", "Orientation": 1 }, "exifIFD": { "DateTimeOriginal": "2001:02:03 04:05:06" }, "gpsIFD": { "GPSVersionID": [ 2, 3, 0, 0 ], "GPSLatitudeRef": "N", "GPSLatitude": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "GPSLongitudeRef": "E", "GPSLongitude": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "GPSAltitudeRef": 0, "GPSAltitude": [ 85, 2 ], "GPSTimeStamp": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "GPSDateStamp": "2001:02:03" }, "gpsMeaning": "Deliberately synthetic Null Island coordinates0N0E and altitude42.5m with artificial2001 timestamp; not any person or device capture location.", "ifdChain": { "IFD0": 8, "ExifIFD": 86, "GPSIFD": 104, "IFD1": 218, "IFD0NextPointsToIFD1": true }, "thumbnail": { "file": "synthetic-thumbnail.jpg", "type": "JPEG", "width": 160, "height": 100, "bytes": 6275, "sha256": "d48f96f545e7bc8be39e8ea1d0387cc1e21076e01ee8532cd375cd6a0f73d1ec", "tiffRelativeOffset": 470, "payloadExists": true, "decodedSuccessfully": true, "source": "Locally resized pixels of the same already-public synthetic direction drawing, not a real photo." }, "xmpAdded": false, "iptcAdded": false, "nativeOutputsPresent": false, "limits": "This prepares one input only. No conclusion about product GPS or thumbnail preservation/removal is established until actual downloaded outputs are parsed." }, "mainParser": { "schemaVersion": 1, "status": "observed_actual_native_outputs", "source": { "file": "gps-thumbnail-input.jpg", "bytes": 57157, "sha256": "df5e8cc4506945a6b965dcf87be59864d57904385bf5f040a6b238c322d18fff", "format": "JPEG", "encodedSize": [ 640, 400 ], "decodedRgbSha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df", "jpegHeaders": { "segments": [ { "marker": "APP1", "payloadBytes": 6751, "signature": "EXIF" }, { "marker": "APP0", "payloadBytes": 14, "signature": "JFIF" } ], "compressedScanSha256": "7f826ca9a74cfb45e86eb5a01090f8c75f72ad3f02e077b20626edf05ed28b5e", "iccApp2Present": false, "xmpApp1Present": false, "iptcApp13Present": false }, "exifSegments": [ { "tiffByteOrder": "little", "ifd0": [ { "id": 271, "name": "Make", "type": 2, "count": 19, "value": "Doc2X Synthetic QA", "validPayload": true }, { "id": 272, "name": "Model", "type": 2, "count": 18, "value": "Not a real camera", "validPayload": true }, { "id": 274, "name": "Orientation", "type": 3, "count": 1, "value": 1, "validPayload": true }, { "id": 315, "name": "Artist", "type": 2, "count": 23, "value": "Synthetic test fixture", "validPayload": true }, { "id": 34665, "name": "ExifOffset", "type": 4, "count": 1, "value": 86, "validPayload": true }, { "id": 34853, "name": "GPSInfo", "type": 4, "count": 1, "value": 104, "validPayload": true } ], "exifIFD": [ { "id": 36867, "name": "DateTimeOriginal", "type": 2, "count": 20, "value": "2001:02:03 04:05:06", "validPayload": true } ], "gpsIFD": [ { "id": 0, "name": "GPSVersionID", "type": 1, "count": 4, "value": [ 2, 3, 0, 0 ], "validPayload": true }, { "id": 1, "name": "GPSLatitudeRef", "type": 2, "count": 2, "value": "N", "validPayload": true }, { "id": 2, "name": "GPSLatitude", "type": 5, "count": 3, "value": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "validPayload": true }, { "id": 3, "name": "GPSLongitudeRef", "type": 2, "count": 2, "value": "E", "validPayload": true }, { "id": 4, "name": "GPSLongitude", "type": 5, "count": 3, "value": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "validPayload": true }, { "id": 5, "name": "GPSAltitudeRef", "type": 1, "count": 1, "value": 0, "validPayload": true }, { "id": 6, "name": "GPSAltitude", "type": 5, "count": 1, "value": [ 85, 2 ], "validPayload": true }, { "id": 7, "name": "GPSTimeStamp", "type": 5, "count": 3, "value": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "validPayload": true }, { "id": 29, "name": "GPSDateStamp", "type": 2, "count": 11, "value": "2001:02:03", "validPayload": true } ], "ifd1": [ { "id": 256, "name": "ImageWidth", "type": 4, "count": 1, "value": 160, "validPayload": true }, { "id": 257, "name": "ImageLength", "type": 4, "count": 1, "value": 100, "validPayload": true }, { "id": 259, "name": "Compression", "type": 3, "count": 1, "value": 6, "validPayload": true }, { "id": 274, "name": "Orientation", "type": 3, "count": 1, "value": 1, "validPayload": true }, { "id": 513, "name": "JpegIFOffset", "type": 4, "count": 1, "value": 470, "validPayload": true }, { "id": 514, "name": "JpegIFByteCount", "type": 4, "count": 1, "value": 6275, "validPayload": true } ], "ifd0NextOffset": 218, "thumbnail": { "ifd1Exists": true, "offset": 470, "declaredLength": 6275, "compression": 6, "payloadPresent": true, "payloadValidJpeg": true, "decodedSize": [ 160, 100 ], "sha256": "d48f96f545e7bc8be39e8ea1d0387cc1e21076e01ee8532cd375cd6a0f73d1ec", "bytes": 6275, "decodedRgbSha256": "d6ede37f9620ab941bb2d8de5769dacc17ba26b73d13fc058789de6b3cb8b742" }, "warnings": [], "fieldMaps": { "ifd0": { "271": "Doc2X Synthetic QA", "272": "Not a real camera", "274": 1, "315": "Synthetic test fixture", "34665": 86, "34853": 104 }, "exifIFD": { "36867": "2001:02:03 04:05:06" }, "gpsIFD": { "0": [ 2, 3, 0, 0 ], "1": "N", "2": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "3": "E", "4": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "5": 0, "6": [ 85, 2 ], "7": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "29": "2001:02:03" }, "ifd1": { "256": 160, "257": 100, "259": 6, "274": 1, "513": 470, "514": 6275 } } } ] }, "outputs": [ { "file": "keep-on-native.jpg", "bytes": 26631, "sha256": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "format": "JPEG", "encodedSize": [ 640, 400 ], "decodedRgbSha256": "30fd7535247c4d4366d16ef6ddb3d920a988d7c4424db8a3da5d17deb7682616", "jpegHeaders": { "segments": [ { "marker": "APP0", "payloadBytes": 14, "signature": "JFIF" }, { "marker": "APP1", "payloadBytes": 476, "signature": "EXIF" }, { "marker": "APP2", "payloadBytes": 470, "signature": "ICC_PROFILE" } ], "compressedScanSha256": "9afe9850ae502ae5d2efa307ca6f5e7143cb965c8bfa3c1d9d188524b7d37357", "iccApp2Present": true, "xmpApp1Present": false, "iptcApp13Present": false }, "exifSegments": [ { "tiffByteOrder": "little", "ifd0": [ { "id": 271, "name": "Make", "type": 2, "count": 19, "value": "Doc2X Synthetic QA", "validPayload": true }, { "id": 272, "name": "Model", "type": 2, "count": 18, "value": "Not a real camera", "validPayload": true }, { "id": 274, "name": "Orientation", "type": 3, "count": 1, "value": 1, "validPayload": true }, { "id": 315, "name": "Artist", "type": 2, "count": 23, "value": "Synthetic test fixture", "validPayload": true }, { "id": 34665, "name": "ExifOffset", "type": 4, "count": 1, "value": 148, "validPayload": true }, { "id": 34853, "name": "GPSInfo", "type": 4, "count": 1, "value": 186, "validPayload": true } ], "exifIFD": [ { "id": 36867, "name": "DateTimeOriginal", "type": 2, "count": 20, "value": "2001:02:03 04:05:06", "validPayload": true } ], "gpsIFD": [ { "id": 0, "name": "GPSVersionID", "type": 1, "count": 4, "value": [ 2, 3, 0, 0 ], "validPayload": true }, { "id": 1, "name": "GPSLatitudeRef", "type": 2, "count": 2, "value": "N", "validPayload": true }, { "id": 2, "name": "GPSLatitude", "type": 5, "count": 3, "value": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "validPayload": true }, { "id": 3, "name": "GPSLongitudeRef", "type": 2, "count": 2, "value": "E", "validPayload": true }, { "id": 4, "name": "GPSLongitude", "type": 5, "count": 3, "value": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "validPayload": true }, { "id": 5, "name": "GPSAltitudeRef", "type": 1, "count": 1, "value": 0, "validPayload": true }, { "id": 6, "name": "GPSAltitude", "type": 5, "count": 1, "value": [ 85, 2 ], "validPayload": true }, { "id": 7, "name": "GPSTimeStamp", "type": 5, "count": 3, "value": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "validPayload": true }, { "id": 29, "name": "GPSDateStamp", "type": 2, "count": 11, "value": "2001:02:03", "validPayload": true } ], "ifd1": [ { "id": 256, "name": "ImageWidth", "type": 4, "count": 1, "value": 160, "validPayload": true }, { "id": 257, "name": "ImageLength", "type": 4, "count": 1, "value": 100, "validPayload": true }, { "id": 259, "name": "Compression", "type": 3, "count": 1, "value": 6, "validPayload": true }, { "id": 274, "name": "Orientation", "type": 3, "count": 1, "value": 1, "validPayload": true }, { "id": 513, "name": "JpegIFOffset", "type": 4, "count": 1, "value": 470, "validPayload": true }, { "id": 514, "name": "JpegIFByteCount", "type": 4, "count": 1, "value": 6275, "validPayload": true } ], "ifd0NextOffset": 392, "thumbnail": { "ifd1Exists": true, "offset": 470, "declaredLength": 6275, "compression": 6, "payloadPresent": false, "payloadValidJpeg": false, "decodedSize": null, "sha256": null, "bytes": 0, "invalidOffsetOrLength": true }, "warnings": [], "fieldMaps": { "ifd0": { "271": "Doc2X Synthetic QA", "272": "Not a real camera", "274": 1, "315": "Synthetic test fixture", "34665": 148, "34853": 186 }, "exifIFD": { "36867": "2001:02:03 04:05:06" }, "gpsIFD": { "0": [ 2, 3, 0, 0 ], "1": "N", "2": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "3": "E", "4": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "5": 0, "6": [ 85, 2 ], "7": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "29": "2001:02:03" }, "ifd1": { "256": 160, "257": 100, "259": 6, "274": 1, "513": 470, "514": 6275 } } } ], "label": "keep-on", "pixelComparison": { "sameDecodedRgbBytes": false, "meanAbsoluteErrorRgb": [ 1.176109375, 0.554421875, 1.5049375 ], "interpretation": "JPEG reencoding changes may occur; a nonzero pixel difference is an observation, not a failure." }, "sourceTagComparisons": { "ifd0": [ { "id": "271", "sourceValue": "Doc2X Synthetic QA", "outputValue": "Doc2X Synthetic QA", "observation": "preserved" }, { "id": "272", "sourceValue": "Not a real camera", "outputValue": "Not a real camera", "observation": "preserved" }, { "id": "274", "sourceValue": 1, "outputValue": 1, "observation": "preserved" }, { "id": "315", "sourceValue": "Synthetic test fixture", "outputValue": "Synthetic test fixture", "observation": "preserved" } ], "exifIFD": [ { "id": "36867", "sourceValue": "2001:02:03 04:05:06", "outputValue": "2001:02:03 04:05:06", "observation": "preserved" } ], "gpsIFD": [ { "id": "0", "sourceValue": [ 2, 3, 0, 0 ], "outputValue": [ 2, 3, 0, 0 ], "observation": "preserved" }, { "id": "1", "sourceValue": "N", "outputValue": "N", "observation": "preserved" }, { "id": "2", "sourceValue": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "outputValue": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "observation": "preserved" }, { "id": "3", "sourceValue": "E", "outputValue": "E", "observation": "preserved" }, { "id": "4", "sourceValue": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "outputValue": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "observation": "preserved" }, { "id": "5", "sourceValue": 0, "outputValue": 0, "observation": "preserved" }, { "id": "6", "sourceValue": [ 85, 2 ], "outputValue": [ 85, 2 ], "observation": "preserved" }, { "id": "7", "sourceValue": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "outputValue": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "observation": "preserved" }, { "id": "29", "sourceValue": "2001:02:03", "outputValue": "2001:02:03", "observation": "preserved" } ] }, "thumbnailComparison": { "sourceHasValidPayload": true, "outputIfd1Exists": true, "outputHasValidPayload": false, "payloadBytesEqualSource": false, "note": "Copied offset tags alone do not establish a real embedded thumbnail; the declared payload must exist and decode." } }, { "file": "keep-off-native.jpg", "bytes": 25868, "sha256": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "format": "JPEG", "encodedSize": [ 640, 400 ], "decodedRgbSha256": "3cbcc16c8dcb9d91dad4acefc8dbdce3825301b24548a36a4a6a571965cb4a61", "jpegHeaders": { "segments": [ { "marker": "APP0", "payloadBytes": 14, "signature": "JFIF" }, { "marker": "APP2", "payloadBytes": 470, "signature": "ICC_PROFILE" } ], "compressedScanSha256": "adcc12575794cd3222e8e04f8bdf897f1c481bc260ed1796726180ae4f244534", "iccApp2Present": true, "xmpApp1Present": false, "iptcApp13Present": false }, "exifSegments": [], "label": "keep-off", "pixelComparison": { "sameDecodedRgbBytes": false, "meanAbsoluteErrorRgb": [ 1.38230859375, 0.6533359375, 1.79697265625 ], "interpretation": "JPEG reencoding changes may occur; a nonzero pixel difference is an observation, not a failure." }, "sourceTagComparisons": { "ifd0": [ { "id": "271", "sourceValue": "Doc2X Synthetic QA", "outputValue": null, "observation": "absent" }, { "id": "272", "sourceValue": "Not a real camera", "outputValue": null, "observation": "absent" }, { "id": "274", "sourceValue": 1, "outputValue": null, "observation": "absent" }, { "id": "315", "sourceValue": "Synthetic test fixture", "outputValue": null, "observation": "absent" } ], "exifIFD": [ { "id": "36867", "sourceValue": "2001:02:03 04:05:06", "outputValue": null, "observation": "absent" } ], "gpsIFD": [ { "id": "0", "sourceValue": [ 2, 3, 0, 0 ], "outputValue": null, "observation": "absent" }, { "id": "1", "sourceValue": "N", "outputValue": null, "observation": "absent" }, { "id": "2", "sourceValue": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "outputValue": null, "observation": "absent" }, { "id": "3", "sourceValue": "E", "outputValue": null, "observation": "absent" }, { "id": "4", "sourceValue": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "outputValue": null, "observation": "absent" }, { "id": "5", "sourceValue": 0, "outputValue": null, "observation": "absent" }, { "id": "6", "sourceValue": [ 85, 2 ], "outputValue": null, "observation": "absent" }, { "id": "7", "sourceValue": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "outputValue": null, "observation": "absent" }, { "id": "29", "sourceValue": "2001:02:03", "outputValue": null, "observation": "absent" } ] }, "thumbnailComparison": { "sourceHasValidPayload": true, "outputIfd1Exists": false, "outputHasValidPayload": false, "payloadBytesEqualSource": false, "note": "Copied offset tags alone do not establish a real embedded thumbnail; the declared payload must exist and decode." } } ], "nativeBytesUnmodified": true, "verifier": { "file": "check-outputs.py", "sha256": "54a43e15e1d385382a00e979192404228bb5adff6291c9c0c265cc3fd50fa1eb" }, "limits": [ "All GPS/device/time data are explicit synthetic QA values, not a person or device location.", "XMP/IPTC were not added and are not a tested removal scope.", "EXIF GPS and a valid IFD1 JPEG thumbnail are separately inspected; preserving some tags does not prove thumbnail preservation.", "APP2 ICC is independently recorded; no all-metadata or universal privacy guarantee.", "Native JPEG pixel equality is not required; recompression differences are recorded." ] }, "independentParser": { "schema": "independent-jpeg-tiff-inspection/v1", "metadataParser": "Python standard library", "scope": "observed_files_only", "productPreservationOrRemovalConclusion": null, "limits": "Records observed metadata and bytes only; no claim that an output should retain a thumbnail or remove every metadata format.", "files": [ { "label": "fixture", "file": "gps-thumbnail-input.jpg", "bytes": 57157, "sha256": "df5e8cc4506945a6b965dcf87be59864d57904385bf5f040a6b238c322d18fff", "jpegSOI": true, "segments": [ { "marker": "0xe1", "markerOffset": 2, "payloadBytes": 6751, "kind": "Exif APP1" }, { "marker": "0xe0", "markerOffset": 6757, "payloadBytes": 14, "kind": "JFIF APP0" }, { "marker": "0xdb", "markerOffset": 6775, "payloadBytes": 65 }, { "marker": "0xdb", "markerOffset": 6844, "payloadBytes": 65 }, { "marker": "0xc0", "markerOffset": 6913, "payloadBytes": 15 }, { "marker": "0xc4", "markerOffset": 6932, "payloadBytes": 29 }, { "marker": "0xc4", "markerOffset": 6965, "payloadBytes": 179 }, { "marker": "0xc4", "markerOffset": 7148, "payloadBytes": 29 }, { "marker": "0xc4", "markerOffset": 7181, "payloadBytes": 179 }, { "marker": "0xda", "markerOffset": 7364, "payloadBytes": 10 } ], "exif": [ { "bytes": 6745, "validHeader": true, "ifds": [ { "name": "IFD0", "offset": 8, "entryCount": 6, "tags": [ { "tag": 271, "tagHex": "0x010f", "name": "Make", "type": 2, "typeName": "ASCII", "count": 19, "entryOffset": 10, "storage": "offset", "dataOffset": 296, "bytes": 19, "decoded": true, "value": "Doc2X Synthetic QA" }, { "tag": 272, "tagHex": "0x0110", "name": "Model", "type": 2, "typeName": "ASCII", "count": 18, "entryOffset": 22, "storage": "offset", "dataOffset": 316, "bytes": 18, "decoded": true, "value": "Not a real camera" }, { "tag": 274, "tagHex": "0x0112", "name": "Orientation", "type": 3, "typeName": "SHORT", "count": 1, "entryOffset": 34, "storage": "inline", "dataOffset": 42, "bytes": 2, "decoded": true, "value": 1 }, { "tag": 315, "tagHex": "0x013b", "name": "Artist", "type": 2, "typeName": "ASCII", "count": 23, "entryOffset": 46, "storage": "offset", "dataOffset": 334, "bytes": 23, "decoded": true, "value": "Synthetic test fixture" }, { "tag": 34665, "tagHex": "0x8769", "name": "ExifIFDPointer", "type": 4, "typeName": "LONG", "count": 1, "entryOffset": 58, "storage": "inline", "dataOffset": 66, "bytes": 4, "decoded": true, "value": 86 }, { "tag": 34853, "tagHex": "0x8825", "name": "GPSInfoIFDPointer", "type": 4, "typeName": "LONG", "count": 1, "entryOffset": 70, "storage": "inline", "dataOffset": 78, "bytes": 4, "decoded": true, "value": 104 } ], "validBounds": true, "nextIfdOffset": 218 }, { "name": "ExifIFD", "offset": 86, "entryCount": 1, "tags": [ { "tag": 36867, "tagHex": "0x9003", "name": "DateTimeOriginal", "type": 2, "typeName": "ASCII", "count": 20, "entryOffset": 88, "storage": "offset", "dataOffset": 358, "bytes": 20, "decoded": true, "value": "2001:02:03 04:05:06" } ], "validBounds": true, "nextIfdOffset": 0 }, { "name": "GPSIFD", "offset": 104, "entryCount": 9, "tags": [ { "tag": 0, "tagHex": "0x0000", "name": "GPSVersionID", "type": 1, "typeName": "BYTE", "count": 4, "entryOffset": 106, "storage": "inline", "dataOffset": 114, "bytes": 4, "decoded": true, "value": [ 2, 3, 0, 0 ] }, { "tag": 1, "tagHex": "0x0001", "name": "GPSLatitudeRef", "type": 2, "typeName": "ASCII", "count": 2, "entryOffset": 118, "storage": "inline", "dataOffset": 126, "bytes": 2, "decoded": true, "value": "N" }, { "tag": 2, "tagHex": "0x0002", "name": "GPSLatitude", "type": 5, "typeName": "RATIONAL", "count": 3, "entryOffset": 130, "storage": "offset", 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"2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "expected": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "passed": true }, { "check": "keep-on/main/hash-bound-to-native", "actual": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "expected": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "passed": true }, { "check": "keep-on/main/byte-count-bound-to-native", "actual": 26631, "expected": 26631, "passed": true }, { "check": "keep-on/independent/hash-bound-to-native", "actual": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "expected": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "passed": true }, { "check": "keep-on/independent/byte-count-bound-to-native", "actual": 26631, "expected": 26631, "passed": true }, { "check": "keep-on/main-jpeg-decodes", "actual": true, "expected": true, "passed": true }, { "check": "keep-on/main-encoded-size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "passed": true }, { "check": "keep-on/main-pixel-hash-parsers-agree", "actual": "30fd7535247c4d4366d16ef6ddb3d920a988d7c4424db8a3da5d17deb7682616", "expected": "30fd7535247c4d4366d16ef6ddb3d920a988d7c4424db8a3da5d17deb7682616", "passed": true }, { "check": "keep-off/actual-native-byte-size", "actual": 25868, "expected": 25868, "passed": true }, { "check": "keep-off/actual-native-sha256", "actual": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "expected": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "passed": true }, { "check": "keep-off/main/hash-bound-to-native", "actual": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "expected": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "passed": true }, { "check": "keep-off/main/byte-count-bound-to-native", "actual": 25868, "expected": 25868, "passed": true }, { "check": "keep-off/independent/hash-bound-to-native", "actual": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "expected": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "passed": true }, { "check": "keep-off/independent/byte-count-bound-to-native", "actual": 25868, "expected": 25868, "passed": true }, { "check": "keep-off/main-jpeg-decodes", "actual": true, "expected": true, "passed": true }, { "check": "keep-off/main-encoded-size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "passed": true }, { "check": "keep-off/main-pixel-hash-parsers-agree", "actual": "3cbcc16c8dcb9d91dad4acefc8dbdce3825301b24548a36a4a6a571965cb4a61", "expected": "3cbcc16c8dcb9d91dad4acefc8dbdce3825301b24548a36a4a6a571965cb4a61", "passed": true }, { "check": "keep-on/GPS-tag-0", "actual": [ 2, 3, 0, 0 ], "expected": [ 2, 3, 0, 0 ], "passed": true }, { "check": "keep-on/GPS-main-independent-agree-0", "actual": [ 2, 3, 0, 0 ], "expected": [ 2, 3, 0, 0 ], "passed": true }, { "check": "keep-on/GPS-tag-1", "actual": "N", "expected": "N", "passed": true }, { "check": "keep-on/GPS-main-independent-agree-1", "actual": "N", "expected": "N", "passed": true }, { "check": "keep-on/GPS-tag-2", "actual": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "expected": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "passed": true }, { "check": "keep-on/GPS-main-independent-agree-2", "actual": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "expected": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "passed": true }, { "check": "keep-on/GPS-tag-3", "actual": "E", "expected": "E", "passed": true }, { "check": "keep-on/GPS-main-independent-agree-3", "actual": "E", "expected": "E", "passed": true }, { "check": "keep-on/GPS-tag-4", "actual": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "expected": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "passed": true }, { "check": "keep-on/GPS-main-independent-agree-4", "actual": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "expected": [ [ 0, 1 ], [ 0, 1 ], [ 0, 1 ] ], "passed": true }, { "check": "keep-on/GPS-tag-5", "actual": 0, "expected": 0, "passed": true }, { "check": "keep-on/GPS-main-independent-agree-5", "actual": 0, "expected": 0, "passed": true }, { "check": "keep-on/GPS-tag-6", "actual": [ 85, 2 ], "expected": [ 85, 2 ], "passed": true }, { "check": "keep-on/GPS-main-independent-agree-6", "actual": [ 85, 2 ], "expected": [ 85, 2 ], "passed": true }, { "check": "keep-on/GPS-tag-7", "actual": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "expected": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "passed": true }, { "check": "keep-on/GPS-main-independent-agree-7", "actual": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "expected": [ [ 4, 1 ], [ 5, 1 ], [ 6, 1 ] ], "passed": true }, { "check": "keep-on/GPS-tag-29", "actual": "2001:02:03", "expected": "2001:02:03", "passed": true }, { "check": "keep-on/GPS-main-independent-agree-29", "actual": "2001:02:03", "expected": "2001:02:03", "passed": true }, { "check": "keep-on/GPS-count", "actual": 9, "expected": 9, "passed": true }, { "check": "keep-on/IFD0/271", "actual": "Doc2X Synthetic QA", "expected": "Doc2X Synthetic QA", "passed": true }, { "check": "keep-on/IFD0/272", "actual": "Not a real camera", "expected": "Not a real camera", "passed": true }, { "check": "keep-on/IFD0/274", "actual": 1, "expected": 1, "passed": true }, { "check": "keep-on/IFD0/315", "actual": "Synthetic test fixture", "expected": "Synthetic test fixture", "passed": true }, { "check": "keep-on/ExifIFD/36867", "actual": "2001:02:03 04:05:06", "expected": "2001:02:03 04:05:06", "passed": true }, { "check": "fixture/real-thumbnail-length", "actual": 6275, "expected": 6275, "passed": true }, { "check": "fixture/real-thumbnail-valid", "actual": true, "expected": true, "passed": true }, { "check": "fixture/real-thumbnail-hash", "actual": "d48f96f545e7bc8be39e8ea1d0387cc1e21076e01ee8532cd375cd6a0f73d1ec", "expected": "d48f96f545e7bc8be39e8ea1d0387cc1e21076e01ee8532cd375cd6a0f73d1ec", "passed": true }, { "check": "fixture/real-thumbnail-decoded-size", "actual": [ 160, 100 ], "expected": [ 160, 100 ], "passed": true }, { "check": "keep-on/IFD1-exists", "actual": true, "expected": true, "passed": true }, { "check": "keep-on/IFD1-tag-256", "actual": 160, "expected": 160, "passed": true }, { "check": "keep-on/IFD1-tag-257", "actual": 100, "expected": 100, "passed": true }, { "check": "keep-on/IFD1-tag-259", "actual": 6, "expected": 6, "passed": true }, { "check": "keep-on/IFD1-tag-513", "actual": 470, "expected": 470, "passed": true }, { "check": "keep-on/IFD1-tag-514", "actual": 6275, "expected": 6275, "passed": true }, { "check": "keep-on/EXIF-APP1-payload-bytes", "actual": [ 476 ], "expected": [ 476 ], "passed": true }, { "check": "keep-on/TIFF-bytes", "actual": 470, "expected": 470, "passed": true }, { "check": "keep-on/declared-thumbnail-exceeds-TIFF", "actual": true, "expected": true, "passed": true }, { "check": "keep-on/no-valid-thumbnail-payload", "actual": false, "expected": false, "passed": true }, { "check": "keep-on/main-no-thumbnail-payload", "actual": false, "expected": false, "passed": true }, { "check": "keep-on/main-no-valid-thumbnail", "actual": false, "expected": false, "passed": true }, { "check": "keep-off/EXIF-APP1-count", "actual": 0, "expected": 0, "passed": true }, { "check": "keep-off/no-IFD1", "actual": false, "expected": false, "passed": true }, { "check": "keep-off/no-GPSIFD", "actual": false, "expected": false, "passed": true }, { "check": "keep-off/main-no-EXIF", "actual": [], "expected": [], "passed": true }, { "check": "keep-on/ICC-APP2-payload-bytes", "actual": [ 470 ], "expected": [ 470 ], "passed": true }, { "check": "keep-on/main-ICC-present", "actual": true, "expected": true, "passed": true }, { "check": "keep-on/JFIF-APP0-present", "actual": true, "expected": true, "passed": true }, { "check": "keep-on/pixel-reencoding-observed", "actual": false, "expected": false, "passed": true }, { "check": "keep-off/ICC-APP2-payload-bytes", "actual": [ 470 ], "expected": [ 470 ], "passed": true }, { "check": "keep-off/main-ICC-present", "actual": true, "expected": true, "passed": true }, { "check": "keep-off/JFIF-APP0-present", "actual": true, "expected": true, "passed": true }, { "check": "keep-off/pixel-reencoding-observed", "actual": false, "expected": false, "passed": true }, { "check": "keep-off/equals-previously-published-off-asset", "actual": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "expected": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "passed": true }, { "check": "native-bytes-remain-unmodified/gps-thumbnail-input.jpg", "actual": "df5e8cc4506945a6b965dcf87be59864d57904385bf5f040a6b238c322d18fff", "expected": "df5e8cc4506945a6b965dcf87be59864d57904385bf5f040a6b238c322d18fff", "passed": true }, { "check": "native-bytes-remain-unmodified/keep-on-native.jpg", "actual": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "expected": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "passed": true }, { "check": "native-bytes-remain-unmodified/keep-off-native.jpg", "actual": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "expected": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "passed": true } ], "nativeFiles": [ { "file": "gps-thumbnail-input.jpg", "bytes": 57157, "sha256": "df5e8cc4506945a6b965dcf87be59864d57904385bf5f040a6b238c322d18fff" }, { "file": "keep-on-native.jpg", "bytes": 26631, "sha256": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b" }, { "file": "keep-off-native.jpg", "bytes": 25868, "sha256": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9" } ], "sourceReports": [ { "file": "fixture-manifest.json", "sha256": "1655609a1b1c258ce84e72ee8b4d3a0d3158026c4e0c3fb8a4682bf2127e3761" }, { "file": "output-checks.json", "sha256": "fa841554773c49bca050ba8a96bf35579d18f1c685b7badbb79e6cb6e682cb97" }, { "file": "independent-output-checks.json", "sha256": "ca6cbd5d5c57db247df44430feed2e5717ef63b58e850345d680fc3bbd1b9b31" } ], "observations": { "keepOnGpsTagsPreserved": 9, "keepOnIfd1TagsRemain": true, "keepOnValidThumbnailPayload": false, "keepOnThumbnailDeclaredOffset": 470, "keepOnThumbnailDeclaredLength": 6275, "keepOnTiffPayloadBytes": 470, "keepOffExifApp1Count": 0, "keepOffIfd1Exists": false, "keepOffGpsIfdExists": false, "outputIccApp2PayloadBytes": [ 470, 470 ], "offBytesEqualPreviouslyPublishedAsset": true, "previousPublishedAsset": "image-exif-remove.jpg", "sameBytesDoNotMeanSameTask": "This round has a separately performed keep-off run and single-file native download; identical bytes may reuse the existing public asset without reattributing the operation." }, "nativeBytesUnmodified": true, "operationCountsByHumanReceipt": { "conversionRuns": 2, "eachRunInputFiles": 1, "singleJpegDownloads": 2, "nativeZipDownloads": 0 }, "limits": [ "Synthetic Null Island GPS and artificial timestamps only.", "Input had a real valid IFD1 thumbnail; keep-on copied its tags but not its payload.", "No XMP/IPTC added or tested; ICC/JFIF remain, no all-metadata or universal privacy claim.", "JPEG reencoding pixels differ; no lossless claim." ] }, "actualOperations": { "fixtureUploads": 1, "conversionRuns": 2, "eachRunInputFiles": 1, "outputFormat": "JPEG", "settings": [ { "keepExif": true, "run": 1 }, { "keepExif": false, "run": 2 } ], "singleJpegDownloads": 2, "nativeZipDownloads": 0, "downloadEventsObserved": false, "downloadButtonsClickedOncePerOutput": true, "matchedUniqueNewSyntheticDownloadsBeforeCopy": true, "noRepeatedDownloadOrGeneration": true, "originalKeepExifRestoredTrueWithoutRun": true, "ownProductAndResearchTabsClosed": true, "noOcrTranslationOrApiTask": true, "outputs": { "keep-on-native.jpg": { "bytes": 26631, "sha256": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b" }, "keep-off-native.jpg": { "bytes": 25868, "sha256": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9" } } }, "downloadReceipts": { "keepOn": { "setting": true, "bytes": 26631, "sha256": "2da1d5469380ea9987a717ccda8cfc8ee919ab45f216ecae8367e3207c63817b", "encodedSize": [ 640, 400 ], "GPS": { "0": "b'\\x02\\x03\\x00\\x00'", "1": "N", "2": "(0.0, 0.0, 0.0)", "3": "E", "4": "(0.0, 0.0, 0.0)", "5": "b'\\x00'", "6": "42.5", "7": "(4.0, 5.0, 6.0)", "29": "2001:02:03" }, "Exif": { "34853": "186", "34665": "148", "271": "Doc2X Synthetic QA", "272": "Not a real camera", "274": "1", "315": "Synthetic test fixture" }, "downloadEventObserved": false, "downloadClickedOnce": true }, "keepOff": { "setting": false, "bytes": 25868, "sha256": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "encodedSize": [ 640, 400 ], "exifDictionaryEmpty": true, "downloadEventObserved": false, "downloadClickedOnce": true } }, "reusedRemoveAsset": { "asset": "image-exif-remove.jpg", "bytes": 25868, "sha256": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "thisRoundNewRunAndDownload": true, "byteIdenticalToExistingPublicAsset": true, "noDuplicateOffAssetAdded": true }, "limits": [ "All GPS values are synthetic Null Island QA data, not any real person or device capture location.", "Input had a real6275-byte160×100 JPEG thumbnail. Keep-on retained IFD1 tags but no valid thumbnail payload.", "Main JPEG decoding is established by local Pillow records; the public standard-library checker does not decode pixels.", "No XMP/IPTC payload was added or tested. ICC/JFIF remain, no all-metadata or universal privacy-removal claim.", "Two actual single-image conversions and downloads, not ZIP outputs; original keepExif option restored and own tabs closed.", "JPEG reencoding changes pixels; no lossless claim." ] }