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Educational Sample Lab

Learn with synthetic files before inspecting a private document. No account is required, and these lessons contain no personal data.

Read the evidence carefully

Four different things—not one conclusion

Source evidence
Content or structure stored in the synthetic original file.
Scanner finding
An automated review signal describing what a detector observed.
Rendered reference
A temporary scanner-generated view that can differ from Word or Excel and never replaces source evidence.
Human conclusion
A judgment made after checking context. The scanner does not determine intent, authorship, misconduct, or safety.

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Filters are ordinary links and form controls. They work without JavaScript and do not save choices in the browser.

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Showing 8 of 8 synthetic samples.

Excel · Beginner

clean-excel-control.xlsx

Reviewed results match
  • Clean controls

What is hidden?

Confirm that a workbook with one visible sheet and literal values remains a clean control.

Nothing intentionally hidden. This is the format’s clean comparison file.

Why might this be benign?

This workbook intentionally contains only visible literal cell values.

How should I verify it?

Review sheet visibility and formulas, then confirm the scanner reports no structural findings.

Expected versus observed

Reviewed with scanner 1.6.3v. Locations describe source evidence; they are not human conclusions.

Expected: no findings. Observed: no findings.

Download synthetic Excel sample

Synthetic fixture · 4897 bytes · SHA-256 e2615d921e15d1298daafee05664d0a8a09b0ada4ad1f37331abbff549687a46

PDF · Beginner

clean-pdf-control.pdf

Reviewed results match
  • Clean controls

What is hidden?

Confirm that a simple visible PDF remains a clean control.

Nothing intentionally hidden. This is the format’s clean comparison file.

Why might this be benign?

This PDF intentionally contains only visible page text.

How should I verify it?

Inspect the page and confirm the scanner reports no hidden-content signals.

Expected versus observed

Reviewed with scanner 1.6.3v. Locations describe source evidence; they are not human conclusions.

Expected: no findings. Observed: no findings.

Download synthetic PDF sample

Synthetic fixture · 656 bytes · SHA-256 d7cb0b55acdd1d99841656ea4adb9c22c46f7808b62cade4640e22ff6ff4daea

Plain text · Beginner

clean-text-control.txt

Reviewed results match
  • Clean controls

What is hidden?

Confirm that ordinary UTF-8 text remains a clean control.

Nothing intentionally hidden. This is the format’s clean comparison file.

Why might this be benign?

This file intentionally uses ordinary ASCII text.

How should I verify it?

Scan the file and confirm that no Unicode review signals appear.

Expected versus observed

Reviewed with scanner 1.6.3v. Locations describe source evidence; they are not human conclusions.

Expected: no findings. Observed: no findings.

Download synthetic Plain text sample

Synthetic fixture · 69 bytes · SHA-256 1acf6e04d0cc315d557a9b406b296e5fc36afcfd306fd938dd3d7805917e30fa

Word · Beginner

clean-word-control.docx

Reviewed results match
  • Clean controls

What is hidden?

Confirm that a simple Word document with visible body text remains a clean control.

Nothing intentionally hidden. This is the format’s clean comparison file.

Why might this be benign?

This document intentionally excludes collaboration and hidden-content features.

How should I verify it?

Open Show/Hide and Review panes, then confirm there is nothing additional to remove.

Expected versus observed

Reviewed with scanner 1.6.3v. Locations describe source evidence; they are not human conclusions.

Expected: no findings. Observed: no findings.

Download synthetic Word sample

Synthetic fixture · 35353 bytes · SHA-256 859be8369f44238f7a1e3379caae5ef8cd13ef71b1c9283e0749ce603b87aa3c

Excel · Intermediate

excel-structure-pattern-lab.xlsx

Reviewed results match
  • Visual concealment
  • Metadata
  • Collaboration history
  • Hidden document structure

What is hidden?

Review hidden sheets, dimensions, formulas, names, comments, properties, and concealment formatting.

Why might this be benign?

Helper calculations, presentation choices, collaboration, and workbook templates often use these features.

How should I verify it?

Unhide each structure, inspect formulas and properties, and save a reviewed copy.

Expected versus observed

Reviewed with scanner 1.6.3v. Locations describe source evidence; they are not human conclusions.

ExpectedHidden sheet contentHidden Lab!A1
Observed Hidden sheet contentHidden Lab!A1 · document only
ExpectedHidden row contentVisible Lab!Row 2
Observed Hidden row contentVisible Lab!Row 2 · document only
ExpectedHidden column contentVisible Lab!Column C
Observed Hidden column contentVisible Lab!Column C · document only
ExpectedWorkbook formulaVisible Lab!D4
Observed Workbook formulaVisible Lab!D4 · document only
ExpectedDefined nameWorkbook defined names
Observed Defined nameWorkbook defined names · document only
ExpectedWorksheet settingVisible Lab!F6
Observed Worksheet settingVisible Lab!F6 · document only
ExpectedDocument metadataWorkbook metadata
Observed Document metadataWorkbook metadata · document only
ExpectedHidden number formatVisible Lab!E5
Observed Hidden number formatVisible Lab!E5 · document only
Show 6 additional expected scanner observations
  • Hidden row content — Visible Lab!A2
  • Hidden row content — Visible Lab!B2
  • Hidden column content — Visible Lab!C3
  • Worksheet setting — Hidden Lab
  • Document metadata — Workbook metadata
  • Document metadata — Workbook metadata
Download synthetic Excel sample

Synthetic fixture · 7012 bytes · SHA-256 08cab933dba4a8854d08dba6f3705d23d46d8197c92f3d52e1d1b33922ef8e32

PDF · Advanced

pdf-visibility-pattern-lab.pdf

Reviewed results match
  • Visual concealment
  • Metadata
  • OCR layers

What is hidden?

Compare visible PDF appearance with transparent, clipped, off-page, metadata, and OCR-layer evidence.

Why might this be benign?

Design exports, accessibility layers, OCR software, and layout tools can leave non-visible PDF content.

How should I verify it?

Compare extracted text with the rendered page and remove only content that is unintended.

Expected versus observed

Reviewed with scanner 1.6.3v. Locations describe source evidence; they are not human conclusions.

ExpectedTransparent textPage 1
Observed Transparent textPage 1, coordinates (72.0, 79.1)-(206.1, 95.6) · exact region
ExpectedOff-page textPage 1
Observed Off-page textPage 1, coordinates (-240.0, 162.6)-(-122.6, 174.6) · page only
ExpectedDocument metadataDocument properties
Observed Document metadataDocument properties · document only
ExpectedOCR disagreementPage 2
Observed OCR disagreementPage 2 · page only
Show 7 additional expected scanner observations
  • Low-visibility text — Page 1, coordinates (72.0, 267.1)-(272.0, 283.6)
  • Transparent text — Page 2, coordinates (72.0, 113.1)-(431.4, 129.6)
  • Non-rendering text — Page 2, coordinates (72.0, 116.6)-(431.4, 128.6)
  • Document metadata — Document properties
  • Document metadata — Document properties
  • Document metadata — Document properties
  • Document metadata — Document properties
Download synthetic PDF sample

Synthetic fixture · 3995 bytes · SHA-256 0ac69bc3b41d2500b06f26a6884d022bd472b3511451bb1de828d36f9557f2fc

Plain text · Beginner

unicode-pattern-lab.txt

Reviewed results match
  • Invisible Unicode

What is hidden?

Identify invisible Unicode, directional controls, unusual spaces, and mixed-script confusables.

Why might this be benign?

Copy-paste, multilingual writing, typography, and accessibility tools can introduce these characters without harmful intent.

How should I verify it?

Replace each marked character with an ordinary visible equivalent and rescan the saved copy.

Expected versus observed

Reviewed with scanner 1.6.3v. Locations describe source evidence; they are not human conclusions.

ExpectedInvisible characterLine 2, characters 17-17
Observed Invisible characterLine 2, characters 17-17 · document only
ExpectedContent for reviewLine 3, characters 29-29
Observed Content for reviewLine 3, characters 29-29 · document only
ExpectedVisually similar charactersLine 5, characters 26-31
Observed Visually similar charactersLine 5, characters 26-31 · document only
Download synthetic Plain text sample

Synthetic fixture · 182 bytes · SHA-256 b69134e3990dba40790624b0895c5a073541aa5e290ad19e6e9c9d7cb40ed486

Word · Intermediate

word-structure-pattern-lab.docx

Reviewed results match
  • Visual concealment
  • Metadata
  • Collaboration history
  • Hidden document structure

What is hidden?

Review hidden runs, comments, revisions, properties, headers, footers, and ambiguous repeated text.

Why might this be benign?

Templates, collaboration, editing history, and repeating labels commonly produce these structures.

How should I verify it?

Use Word's review and document-inspector tools to decide which stored content should remain.

Expected versus observed

Reviewed with scanner 1.6.3v. Locations describe source evidence; they are not human conclusions.

ExpectedHidden Word textParagraph 2
Observed Hidden Word textParagraph 2 · document only
ExpectedDocument commentDocument-wide
Observed Document commentDocument-wide · document only
ExpectedTracked changeTracked changes
Observed Tracked changeTracked changes · document only
ExpectedDocument metadataDocument properties
Observed Document metadataDocument properties · document only
ExpectedHidden Word textSection 1 header
Observed Hidden Word textSection 1 header · document only
ExpectedHidden Word textSection 1 footer
Observed Hidden Word textSection 1 footer · document only
Show 3 additional expected scanner observations
  • Document metadata — Document properties
  • Document metadata — Document properties
  • Tracked change — Tracked changes
Download synthetic Word sample

Synthetic fixture · 37267 bytes · SHA-256 b956fbd270b351b305b58655ffeab7d68057c2001ca78e8a1b860877ddf11b38

Private inspection, public lessons

The catalog and downloads are public synthetic resources. Choosing “Inspect this sample” copies validated fixture bytes into the normal private scan workspace, creates the same temporary owner-scoped report as a regular scan, and applies the same deletion and expiry rules.

No account, analytics request, remote content, or client-side sample state is required.