Forensic check

HTPBE_INCOMPLETE_REDACTION

HTPBE_INCOMPLETE_REDACTION appears on 0.2% of modified results in our corpus. A marker is evidence about the file, not a judgement about the person who sent it.

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Marker profile

Content Stream Analysis

A redaction that did not fully conceal its content.

Share of modified results
0.2%
Frequency rank
#38
Among the 56 markers seen in modified results
Certain confidence
0%
Of results with this marker rated certain rather than high
Fires alone
56.0%
Results where it is the only marker found

Marker profile

What HTPBE_INCOMPLETE_REDACTION tells you

HTPBE_INCOMPLETE_REDACTION is one of the named findings returned in modification_markers when a PDF is reported as modified. It belongs to the Content Stream Analysis group of checks. These checks look at the content of the pages themselves for signs of edits made after the document was authored.

On 56.0% of the modified results that carry HTPBE_INCOMPLETE_REDACTION it is the only marker. A result with this marker carries 1.4 markers on average. It is most often found together with HTPBE_SCAN_IN_DIGITAL_DOC, on 40.0% of these results.

Example API response

How it appears in a result

When a PDF is reported as modified, HTPBE_INCOMPLETE_REDACTION is listed in modification_markers next to the verdict and its confidence. Each marker is a named, actionable finding – not a score.

GET /api/v1/result/{id}
{
  "id": "9f3a2c1d-8b47-4e6f-a012-3d5e7f890123",
  "status": "modified",
  "modification_confidence": "high",
  "modification_markers": [
    "HTPBE_INCOMPLETE_REDACTION"
  ],
  "creator": "Adobe Acrobat Pro DC",
  "has_incremental_updates": true,
  "page_count": 3
}

Full schema in the API reference →

Distributions

What ships alongside HTPBE_INCOMPLETE_REDACTION

The tools, formats and document traits that appear on the modified results carrying this marker. Shares are of those results.

Common Producers

Skia/PDF writes 48.0% of these results – and 9.2% of all modified results naming it carry this marker.

Skia/PDF9.2% of its modified48.0%
Adobe PDF Library3.4% of its modified40.0%

Common Creators

Adobe Illustrator is the Creator on 40.0% of these results.

Adobe Illustrator2.8% of its modified40.0%

Often found together with

HTPBE_SCAN_IN_DIGITAL_DOC sits next to HTPBE_INCOMPLETE_REDACTION more often than any other marker.

Document origin

Consumer software96.0%

Creator → Producer pairs

Adobe Illustrator → Adobe PDF Library40.0%

Detected origin software

Adobe Illustrator40.0%
Google Workspace40.0%

Confidence of the verdict

High100.0%

When these results were checked

April 2026100.0%

Document length

1 page60.0%
2–5 pages40.0%

File size

Under 100 KB52.0%
100 KB – 1 MB48.0%

PDF versions

PDF 1.4100.0%

Year the document says it was created

202656.0%

Long tail

Notable observations

Smaller cuts of the results carrying HTPBE_INCOMPLETE_REDACTION – useful context, but treat each row as a single data point rather than a strong signal.

Digitally signed
0%

Of files carry at least one digital signature

Saved revisions
40.0%

Of files contain earlier saved revisions

Embedded JavaScript
0%

Of files contain JavaScript code

Embedded files
0%

Of files have attachments inside

Avg pages per document
1.8
Markers per result
1.4

Average number of markers on these results

FAQ

HTPBE_INCOMPLETE_REDACTION: common questions

What does HTPBE_INCOMPLETE_REDACTION mean?

HTPBE_INCOMPLETE_REDACTION is a named finding in an HTPBE? result: a redaction that did not fully conceal its content. It is returned in the modification_markers list of a modified result and belongs to the Content Stream Analysis group of checks.

Does HTPBE_INCOMPLETE_REDACTION mean the document is fake?

No. A marker is evidence about the file, not a judgement about the person who sent it. It records that the file shows this pattern; it does not say why, and it does not assess what the document states. Read it together with the verdict and any other markers on the same result.

What should I do when a result contains HTPBE_INCOMPLETE_REDACTION?

Ask the sender for the original file straight from the issuing system, or request a fresh copy from the issuer. Check whether the document went through a later step such as re-saving, merging or converting, and verify it with the issuer before relying on it for a decision.

How common is HTPBE_INCOMPLETE_REDACTION?

HTPBE_INCOMPLETE_REDACTION appears on 0.2% of the modified results in the HTPBE? corpus. The corpus consists of PDFs people chose to submit for checking, so it skews towards documents someone had a reason to doubt and is not a sample of all PDFs.

Where do I see HTPBE_INCOMPLETE_REDACTION?

In the modification_markers list of the result returned by the HTPBE? API, and on the result page of a modified document. Other checks in the Content Stream Analysis group are listed below on this page; all 63 checks are listed on the how-it-works page.

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