{
  "study_date": "2026-09-17",
  "transcribed": "2026-10-12",
  "provenance": "Structured transcription of the observations already published in this article; not a new run or independently verified raw capture.",
  "limitations": [
    "Original instrumented request logs, browser version, exact fixture bytes and historical policy snapshots were not retained with the article.",
    "Reported byte counts are hook/body measurements; they are not a complete wire capture and do not prove the absence of every possible transfer.",
    "Current reference links were checked on 2026-10-12; their contents may differ from the reported 2026-09-17 policy summaries.",
    "Nine attempted sites have no completed result. File retrieval without a session was checked for four results only."
  ],
  "summary": {
    "completed_sites": 20,
    "reported_uploads": 19,
    "reported_uploads_on_selection": 13,
    "results_retrieved_without_session": 4,
    "incomplete_sites": 9
  },
  "fixture_reported": {
    "name": "tools-probe-9471.png",
    "width": 450,
    "height": 350,
    "contents": "random pixels",
    "approximate_size_kb": 542
  },
  "observations": [
    {
      "converter": "Squoosh",
      "reported_upload": false,
      "reported_timing": "none",
      "reported_bytes": 0,
      "measurement_label": "0",
      "endpoint_pattern": "—",
      "reported_retention": "nothing to keep",
      "current_reference_url": "https://github.com/GoogleChromeLabs/squoosh/blob/dev/README.md",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "TinyPNG",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542566,
      "measurement_label": "542,566",
      "endpoint_pattern": "tinypng.com/backend/opt/store",
      "reported_retention": "48 hours",
      "current_reference_url": "https://tinypng.com/terms",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "iLoveIMG",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542816,
      "measurement_label": "542,816",
      "endpoint_pattern": "api9.iloveimg.com/v1/upload",
      "reported_retention": "2 hours",
      "current_reference_url": "https://www.iloveimg.com/help/terms",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "iLovePDF",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542801,
      "measurement_label": "542,801",
      "endpoint_pattern": "api4.ilovepdf.com/v1/upload",
      "reported_retention": "2 hours",
      "current_reference_url": "https://www.ilovepdf.com/help/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "Sejda",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542537,
      "measurement_label": "542,537",
      "endpoint_pattern": "sejda.com/api/files/upload",
      "reported_retention": "after processing; shared links 7 days",
      "current_reference_url": "https://www.sejda.com/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "PDF24",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542531,
      "measurement_label": "542,531",
      "endpoint_pattern": "filetools24.pdf24.org/client.php",
      "reported_retention": "“usually” 1 hour",
      "current_reference_url": "https://www.pdf24.org/en/privacy-policy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "PDF Candy",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542522,
      "measurement_label": "542,522",
      "endpoint_pattern": "s35.api.pdfcandy.com/uploadcbc/…",
      "reported_retention": "2 hours",
      "current_reference_url": "https://pdfcandy.com/help.html",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "jpg2pdf.com",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542570,
      "measurement_label": "542,570",
      "endpoint_pattern": "jpg2pdf.com/api/upload",
      "reported_retention": "1 hour, stated in Terms",
      "current_reference_url": "https://jpg2pdf.com/terms",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "Img2Go",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542589,
      "measurement_label": "542,589",
      "endpoint_pattern": "www21.img2go.com/v2/dl/web7/…",
      "reported_retention": "72 hours",
      "current_reference_url": "https://www.img2go.com/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "Online-Convert",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542423,
      "measurement_label": "542,423",
      "endpoint_pattern": "www8.online-convert.com/v2/dl/web7/…",
      "reported_retention": "72 hours",
      "current_reference_url": "https://www.online-convert.com/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "PDF2Go",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542542,
      "measurement_label": "542,542",
      "endpoint_pattern": "www15.pdf2go.com/v2/dl/web7/…",
      "reported_retention": "72 hours",
      "current_reference_url": "https://www.pdf2go.com/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "Compress2Go",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542492,
      "measurement_label": "542,492",
      "endpoint_pattern": "www6.compress2go.com/v2/dl/web7/…",
      "reported_retention": "72 hours",
      "current_reference_url": "https://www.compress2go.com/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "PicResize",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": 542568,
      "measurement_label": "542,568",
      "endpoint_pattern": "picresize.com/en/edit, form post",
      "reported_retention": "20 minutes",
      "current_reference_url": "https://picresize.com/en/privacypolicy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "ResizePixel",
      "reported_upload": true,
      "reported_timing": "selection",
      "reported_bytes": null,
      "measurement_label": "form post",
      "endpoint_pattern": "resizepixel.com/",
      "reported_retention": "within 1 hour",
      "current_reference_url": "https://www.resizepixel.com/en/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "CloudConvert",
      "reported_upload": true,
      "reported_timing": "conversion",
      "reported_bytes": 543218,
      "measurement_label": "543,218",
      "endpoint_pattern": "eu-central.storage.cloudconvert.com/…",
      "reported_retention": "24 hours",
      "current_reference_url": "https://cloudconvert.com/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "Convertio",
      "reported_upload": true,
      "reported_timing": "conversion",
      "reported_bytes": null,
      "measurement_label": "not captured",
      "endpoint_pattern": "convertio.co/process/…",
      "reported_retention": "24 hours",
      "current_reference_url": "https://convertio.co/privacy/",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "Ezgif",
      "reported_upload": true,
      "reported_timing": "conversion",
      "reported_bytes": 542483,
      "measurement_label": "542,483",
      "endpoint_pattern": "ezgif.com/optimize, form post",
      "reported_retention": "1 hour after last use",
      "current_reference_url": "https://ezgif.com/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "Aconvert",
      "reported_upload": true,
      "reported_timing": "conversion",
      "reported_bytes": null,
      "measurement_label": "form post",
      "endpoint_pattern": "aconvert.com/results.php",
      "reported_retention": "2 hours",
      "current_reference_url": "https://www.aconvert.com/privacy.html",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "Online2PDF",
      "reported_upload": true,
      "reported_timing": "conversion",
      "reported_bytes": 547330,
      "measurement_label": "547,330",
      "endpoint_pattern": "online2pdf.com/conversion/frame",
      "reported_retention": "“immediately”",
      "current_reference_url": "https://online2pdf.com/privacy",
      "reference_link_checked": "2026-10-12"
    },
    {
      "converter": "IMGonline",
      "reported_upload": true,
      "reported_timing": "conversion",
      "reported_bytes": 542633,
      "measurement_label": "542,633",
      "endpoint_pattern": "imgonline.com.ua/eng/…-result.php",
      "reported_retention": "no policy found",
      "current_reference_url": null,
      "reference_link_checked": null
    }
  ]
}