Merge PDF
Combine PDFs and reorder pages by dragging. Nothing is uploaded.
View, edit and strip title, author and producer fields.
| Field | Typical content | Why it matters |
|---|---|---|
| Author | A real name or username | Often the biggest leak |
| Producer | The exact software and version | Reveals your toolchain — and is rewritten every time the file is saved |
| Creator | The originating application | Shows the source document |
| CreationDate | To the second, with time zone | Establishes a timeline |
| ModDate | Last modified | Contradicts a claimed date |
| Title | Often the original filename | Can reveal a template or client |
The Title field is the sleeper. It frequently holds the original filename from whichever document produced the PDF, so a proposal exported from a template can arrive titled with the previous client's name.
PDF dates include a UTC offset. That narrows down where a document was produced, which is occasionally more than the sender intended to share.
Combined with the Producer field naming a specific software version, a PDF can be quite identifying.
Producer has a second quirk: it is rewritten every time the file is saved, by whatever wrote it. So it does not tell you what created the document — it tells you what touched it last.
For most documents none of this matters. For an anonymous submission, a whistleblowing disclosure or anything where authorship is deliberately withheld, it matters a great deal — and it is invisible unless you go looking.
Stripping metadata is one step. A PDF can also carry embedded attachments, an XMP metadata packet separate from the document information dictionary, comments with author names, an outline quoting headings verbatim, and earlier revisions retained by incremental saving.
Removing the Author field addresses one of those.
For anything genuinely sensitive, check all of them — and remember that covering text with a shape removes nothing, which is a different and more serious version of the same mistake.
Typically your name or username in the Author field, the exact software and version in Producer, the originating application in Creator, and creation and modification dates with a UTC offset that narrows down your location.
The Title field usually carries the original filename from the source document. A proposal exported from a template often arrives titled with the previous client's name.
No. It removes one category. Embedded attachments, XMP packets, comment author names, the document outline and revisions kept by incremental saving all persist and need checking separately.
Yes, as a UTC offset. Combined with a specific Producer version, that makes a document more identifying than most people expect.
Because whatever software writes a PDF stamps its own name there on save — this tool cannot leave it untouched any more than Acrobat can. It is shown read-only so the value you see is the truth about the file you started with, not a setting you can control.
No. Metadata sits alongside the page content, so editing it leaves every page byte-identical.