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HTPBE?

Structural PDF tamper detection API. Catches edits your KYC stack misses.

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© 2024–2026 TMI Iurii Rogulia · VAT ID: FI29845875 · Made in Finland 🇫🇮

Status

Algorithm v2.23.1

Tool profile

Chrome

Chrome reads as a institutional generator — its modification rate sits at or below the corpus baseline, consistent with single-pass institutional output.

Back to all statistics
Forensic verdict

Legitimate origin

Based on 212 appearances across the HTPBE? corpus.

Modification rate
27%-21pp below baseline
Corpus baseline: 48%
Total appearances
212
1.0% of corpus
Modification rate
27%
-21pp below baseline
Role split
100%C/0%P
Creator vs Producer share of appearances

Corpus profile

How Chrome shows up in HTPBE? corpus

Chrome’s "Save as PDF" target inside the print dialog uses Skia/PDF under the hood. Common for web-page captures and many SaaS "Download PDF" buttons that drive a hidden Chrome render.

Chrome Print to PDF appears on first-pass HTML-to-PDF renders. Low signal in tampered corpus on its own.

The signal
Chrome Print to PDF appears on first-pass HTML-to-PDF renders.

Role in the workflow

How Chrome shows up in metadata

Every PDF carries a Creator (the application that produced the original document) and a Producer (the engine that wrote the PDF). The same tool can appear in either slot, with very different modification profiles.

CAs Creator · 100%
As Producer · 0%P
CAs Creator
  • Usage
    212
  • Modification rate
    27%
  • Avg file size
    385 KB
PAs Producer
  • Usage
    0
  • Modification rate
    0%

How to read this

The Creator slot typically reflects where a document started life. The Producer slot reflects whatever wrote the bytes — and is the field that gets overwritten when a PDF is opened, edited, and saved by a downstream tool.

A higher modification rate as Producer than as Creator usually means the tool is acting as a re-saver on documents that originated elsewhere. A higher rate as Creator points to fragile workflows around the original authoring app.

Name fingerprints

Also goes by

Different version strings and spellings observed for Chrome in the wild. All are merged into the same canonical profile.

Chromium58.5%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.365.7%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.364.7%
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Mobile Safari/537.364.2%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.364.2%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.362.8%
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.361.9%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.361.9%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.361.4%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.361.4%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.361.4%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.360.9%
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.360.9%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.360.9%
Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.360.9%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.360.9%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.360.9%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.360.5%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.360.5%
Chrome0.5%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.360.5%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.360.5%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.360.5%
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Mobile Safari/537.360.5%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.360.5%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.360.5%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.360.5%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.360.5%
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.360.5%
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.360.5%

Why variants matter

The same tool publishes itself under 30 different metadata strings — version bumps, locale tags, build IDs. We canonicalize them so the corpus reflects one identity, not noise.

Most common
Chromium
58.5% of appearances
Variant spread
30 distinct strings
Long-tail share: 41.5%
Observed range
20 Dec 2020 → 12 May 2026

Distributions

What ships alongside Chrome

The PDF versions Chrome writes when acting as Producer, and the other tools that appear in the same documents.

Common Producers when Chrome is the Creator

Skia/PDF writes 55% of these files — that pairing is the Adobe-stack default for many institutional pipelines.

Skia/PDF55.2%
macOS Print to PDF25.9%
Acrobat Distiller3.8%
4-Heights2.4%

Related profiles

Tools you’ll see next to Chrome

Other tools that frequently share metadata with Chrome in the same documents. Each card links to its own forensic profile.

P26% co-occurrence
macOS Print to PDF
Appearances747
Mod rate64%
P4% co-occurrence
Acrobat Distiller
Appearances303
Mod rate55%
P2% co-occurrence
4-Heights
Appearances13
Mod rate85%

Long tail

Notable observations

Smaller cuts of the Chrome corpus — useful context, but treat each row as a single data point rather than a strong signal.

Pages parsed
965
Oldest observed
20 Dec 2020 — over 5 years ago

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