Nitro PDF reads as a downstream re-saver — its modification rate in our corpus does not sit meaningfully below the baseline. The name alone is never the verdict; each file is judged on its own structure.
Back to all statisticsForensic verdictBased on this tool’s share of the HTPBE? corpus.
Corpus profile
Nitro PDF is a commercial desktop PDF editor used to edit, annotate and convert PDFs.
Nitro appears on files that passed through the Nitro desktop application. HTPBE? never reads a tool name in isolation.
Reading guide
Every PDF stores two software labels: the Creator, which names the application that first produced the document, and the Producer, which names the software that last wrote the file out. This page counts the files HTPBE? has analysed where Nitro PDF fills one of those labels, and shows how often those files carry modification markers, which PDF versions they use and which other tools sit next to them.
A tool name tells you where a file passed through, not whether anyone changed its content. A Creator and Producer that agree usually point to a single pass; a Producer that differs from the Creator means the file was written out again by another program, which has many ordinary explanations such as compression, merging or a print-to-PDF step.
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 Nitro PDF in the wild. All are merged into the same canonical profile.
Why variants matter
The same tool publishes itself under 6 different metadata strings – version bumps, locale tags, build IDs. We canonicalize them so the corpus reflects one identity, not noise.
Distributions
The PDF versions Nitro PDF writes when acting as Producer, and the other tools that appear in the same documents.
Most output is PDF 1.4 (75% of files where Nitro PDF is the Producer).
Long tail
Smaller cuts of the Nitro PDF corpus – useful context, but treat each row as a single data point rather than a strong signal.
FAQ
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