pdf-lib 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
pdf-lib is a JavaScript/TypeScript library for creating and modifying PDFs in Node.js and the browser. Common in SaaS form-fill products and bespoke document tools.
pdf-lib appears both as the original generator on JS-stack SaaS output and as a downstream re-saver on documents that originated elsewhere. Signal: when pdf-lib is the latest Producer on a document whose Creator was an institutional source, that producer/creator mismatch is one of the markers we surface.
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 pdf-lib 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 pdf-lib is the Producer).
pdf-lib sits upstream in 81% of cases — read this row as “what kinds of documents end up routed through pdf-lib.”
Related profiles
Other tools that frequently share metadata with pdf-lib in the same documents. Each card links to its own forensic profile.
Long tail
Smaller cuts of the pdf-lib corpus — useful context, but treat each row as a single data point rather than a strong signal.
Of files have attachments inside
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