{
  "id": "pdf24-online-add-text-save-20260925-v1",
  "editionId": "pdf24-tools",
  "fixtureId": "pdf-layout-v1",
  "task": "add one text overlay, save once and inspect the downloaded PDF",
  "version": "Online web app; vendor build number not exposed",
  "platform": "Browser",
  "osBuild": "Remote Chrome session; OS build not independently established",
  "hardware": "Remote browser environment; hardware not exposed",
  "testedAt": "2026-09-25T00:35:14.191Z",
  "reviewer": "Codex · original browser task test",
  "outcome": "partial",
  "steps": [
    "Opened the current PDF24 Online Edit PDF page and uploaded the CC0 synthetic pdf-layout-v1 fixture.",
    "Selected Add text, inserted the unique marker W2D-SAVED-ONCE-2026-09-25 and set its text size to 18.",
    "Used the PDF24 Save action once. The result page stated that PDF24 had applied the edits.",
    "Opened the generated one-page PDF in a separate Chrome PDF viewer and downloaded the result.",
    "Inspected the visible output, extracted its text with Poppler, inspected PDF metadata with pdfinfo and listed fonts and images with Poppler tools.",
    "Compared the extracted marker, BLUE RIVER 742 reference phrase, original table quantity and metadata against the input fixture."
  ],
  "observed": "The added marker was visible and searchable in the downloaded output after one Save action. The original reference phrase remained searchable. The original table quantity remained 3, so this run did not edit existing text. Title, author and original creation/modification dates remained. PDF24 displayed a completed-job confirmation and a 7.24 KB result.",
  "limitations": "One one-page synthetic PDF in one remote Browser session. No mobile, autosave, crash recovery, server-deletion timing, Windows Creator, arbitrary-document, signature, form, accessibility or offline behavior was tested. The test covers adding a text overlay and downloading the saved result; it does not establish editing existing PDF text. The vendor build number, OS build and hardware were not exposed.",
  "officialDocumentation": {
    "editPdf": "https://tools.pdf24.org/en/edit-pdf",
    "privacyAndLocalAlternative": "https://tools.pdf24.org/en/"
  },
  "communityQuestion": {
    "url": "https://help.pdf24.org/en/questions/question/i-am-heartbroken-weeks-of-work-lost-forever/",
    "observedDate": "2026-09-25",
    "role": "A user report that motivated the save-once check; not product-policy or reliability proof."
  },
  "fixtureSha256": "23b901b5cd2986842a0a3b5ec85f6b0effefb35a1e1b02b42b83d7e32624ddea",
  "outputSha256": "0eab7c947b27f735b358c889ee06395d2f355dfd9d4449c1e7ac015521fcda43",
  "previewSha256": "1e7be5e814646392fe5c3330568bceada5c82e6206d55eff356153a94e6bc7a1",
  "confirmationSha256": "0e893e1e06958264f2e34cde7c22a0ca9609238a71dd09b6d5f437d9d964745e",
  "checks": {
    "inputBytes": 2350,
    "outputBytes": 7413,
    "pageCount": 1,
    "pageSize": "A4, 595.276 x 841.89 pt",
    "pdfVersion": "1.6",
    "encrypted": false,
    "form": "none",
    "javascript": false,
    "markerExtracted": true,
    "referencePhraseExtracted": true,
    "originalQuantityThreeExtracted": true,
    "requestedQuantityFourExtracted": false,
    "metadataPreserved": true,
    "fonts": ["Helvetica", "Helvetica-Bold", "NotoSans-Regular subset"],
    "embeddedPageImages": 0
  }
}