PDF24 reads as a downstream re-saver — it surfaces disproportionately on documents whose original Creator was a different, often institutional, application.
Back to all statisticsForensic verdictBased on this tool’s share of the HTPBE? corpus.
Corpus profile
PDF24 is a free desktop and online PDF toolkit (merge, edit, compress). Documents passing through PDF24 are re-emitted with PDF24 as the Producer.
When PDF24 is the latest Producer on a document whose Creator was institutional, the producer/creator mismatch is a marker — the document was uploaded to or opened in PDF24 after its original creation.
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.
Name fingerprints
Different version strings and spellings observed for PDF24 in the wild. All are merged into the same canonical profile.
Why variants matter
The same tool publishes itself under 2 different metadata strings — version bumps, locale tags, build IDs. We canonicalize them so the corpus reflects one identity, not noise.
Distributions
The PDF versions PDF24 writes when acting as Producer, and the other tools that appear in the same documents.
Most output is PDF 1.6 (100% of files where PDF24 is the Producer).
Related profiles
Other tools that frequently share metadata with PDF24 in the same documents. Each card links to its own forensic profile.
Long tail
Smaller cuts of the PDF24 corpus — useful context, but treat each row as a single data point rather than a strong signal.
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