PDFium reads as a institutional generator — its modification rate sits at or below the corpus baseline, consistent with single-pass institutional output.
Back to all statisticsForensic verdictBased on 937 appearances across the HTPBE? corpus.
Corpus profile
PDFium is the Chromium PDF engine, used for both viewing and (less commonly) emitting PDFs across the Chromium family of browsers and embedded apps.
PDFium as Producer indicates a Chromium-stack render. Low signal for tampering on its own.
Role in the workflow
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.
Distributions
The PDF versions PDFium writes when acting as Producer, and the other tools that appear in the same documents.
Most output is PDF 1.7 (100% of files where PDFium is the Producer).
Related profiles
Other tools that frequently share metadata with PDFium in the same documents. Each card links to its own forensic profile.
Long tail
Smaller cuts of the PDFium corpus — useful context, but treat each row as a single data point rather than a strong signal.
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