Forensic check

HTPBE_MIXED_PAGE_DIMENSIONS

HTPBE_MIXED_PAGE_DIMENSIONS appears on 2.5% 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

Document Assembly

Page layout evidence of pages combined from separate documents.

Share of modified results
2.5%
Frequency rank
#13
Among the 56 markers seen in modified results
Certain confidence
79.3%
Of results with this marker rated certain rather than high
Fires alone
3.1%
Results where it is the only marker found

Marker profile

What HTPBE_MIXED_PAGE_DIMENSIONS tells you

HTPBE_MIXED_PAGE_DIMENSIONS is one of the named findings returned in modification_markers when a PDF is reported as modified. It belongs to the Document Assembly group of checks. These checks look at whether a document reads as one coherent production or as pages and parts brought together from several places.

On 3.1% of the modified results that carry HTPBE_MIXED_PAGE_DIMENSIONS it is the only marker. A result with this marker carries 3.7 markers on average. It is most often found together with HTPBE_DATES_DISAGREE, on 75.9% of these results.

Example API response

How it appears in a result

When a PDF is reported as modified, HTPBE_MIXED_PAGE_DIMENSIONS 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_MIXED_PAGE_DIMENSIONS"
  ],
  "creator": "Adobe Acrobat Pro DC",
  "has_incremental_updates": true,
  "page_count": 3
}

Full schema in the API reference →

Distributions

What ships alongside HTPBE_MIXED_PAGE_DIMENSIONS

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

Common Producers

Acrobat Sign writes 33.0% of these results – and 100.0% of all modified results naming it carry this marker.

Acrobat Sign100.0% of its modified33.0%
PDFium29.8% of its modified25.7%
iLovePDF2.5% of its modified6.5%
macOS Print to PDF1.9% of its modified4.2%
GdPicture Managed PDF Plugin Ver. 4.25100.0% of its modified3.4%
iText0.6% of its modified2.3%
PDFOUT3.7% of its modified1.9%
PyPDF23.5% of its modified1.5%

Common Creators

Microsoft Word is the Creator on 35.2% of these results.

Microsoft Word8.3% of its modified35.2%
PDFium28.6% of its modified26.8%
GdPicture Managed PDF Plugin100.0% of its modified3.4%
ADP5.0% of its modified2.7%
Crystal Reports25.0% of its modified1.5%
Chrome (Print to PDF)2.7% of its modified1.1%
PTC Arbortext42.9% of its modified1.1%

Often found together with

HTPBE_DATES_DISAGREE sits next to HTPBE_MIXED_PAGE_DIMENSIONS more often than any other marker.

Document origin

Consumer software42.5%
Unknown26.4%
Institutional15.3%
Online editor6.9%
Analysis incomplete3.8%
Scanned3.8%
Unverifiable1.1%

Creator → Producer pairs

Microsoft Word → Acrobat Sign33.0%
PDFium → PDFium25.7%
GdPicture Managed PDF Plugin → GdPicture Managed PDF Plugin Ver. 4.253.4%
ADP → PDFOUT1.9%
Crystal Reports → macOS Print to PDF1.5%
Chrome (Print to PDF) → Skia/PDF1.1%
PTC Arbortext → PDFlib1.1%

Detected origin software

Microsoft Word34.5%
iLovePDF6.1%
macOS / iOS (Quartz)4.2%
Browser (Print to PDF)1.1%
Google Workspace1.1%

Confidence of the verdict

Certain79.3%
High20.7%

When these results were checked

April 202660.5%
May 20263.8%
June 20267.7%
July 20265.0%
August 20265.0%
September 20265.7%
October 20266.5%
November 20265.7%

Document length

2–5 pages42.9%
6–20 pages47.1%
21–100 pages10.0%

File size

Under 100 KB2.7%
100 KB – 1 MB76.2%
1 – 5 MB17.2%
Over 5 MB3.8%

PDF versions

PDF 1.754.0%
PDF 1.523.0%
PDF 1.411.5%
PDF 1.66.1%
PDF 1.34.2%
PDF 1.21.1%

Year the document says it was created

201633.7%
20213.4%
20241.1%
20253.1%
202647.1%

Long tail

Notable observations

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

Digitally signed
19.2%

Of files carry at least one digital signature

Saved revisions
28.7%

Of files contain earlier saved revisions

Embedded JavaScript
0.8%

Of files contain JavaScript code

Embedded files
0.4%

Of files have attachments inside

Avg pages per document
11.8
Markers per result
3.7

Average number of markers on these results

FAQ

HTPBE_MIXED_PAGE_DIMENSIONS: common questions

What does HTPBE_MIXED_PAGE_DIMENSIONS mean?

HTPBE_MIXED_PAGE_DIMENSIONS is a named finding in an HTPBE? result: page layout evidence of pages combined from separate documents. It is returned in the modification_markers list of a modified result and belongs to the Document Assembly group of checks.

Does HTPBE_MIXED_PAGE_DIMENSIONS 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_MIXED_PAGE_DIMENSIONS?

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_MIXED_PAGE_DIMENSIONS?

HTPBE_MIXED_PAGE_DIMENSIONS appears on 2.5% 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_MIXED_PAGE_DIMENSIONS?

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 Document Assembly group are listed below on this page; all 63 checks are listed on the how-it-works page.

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