"Who made this PDF?" is a surprisingly answerable question. Most PDFs record the author's name, the program used, and the exact time they were created and last changed. Sometimes they record much more. This guide shows what those hidden details can reveal, how to read them, and how reliable they are.

What a PDF can reveal about its creator

The author. Word, Excel, PowerPoint, Pages and many other apps fill in the Author field automatically, usually from the name on the computer or the Office account. It might be a full name, a first name, a user name like "jsmith", or a company name.

The software. Two fields name it:

  • Creator: the app the document was written in, such as "Microsoft Word for Microsoft 365", "Adobe InDesign" or "Canva".
  • Producer: the tool that turned it into a PDF. "macOS Quartz PDFContext" means it was made on a Mac. "Skia/PDF" usually means it was printed to PDF from Chrome. "Microsoft: Print To PDF" means Windows' built-in printer.

The dates. Created and modified dates, often to the second and with a time zone. A time zone of +05:30, for example, points to India or Sri Lanka.

The history. A hidden block called XMP can hold a list of saves, the apps used for each one, and a Document ID that stays the same across versions of the same document. Two PDFs with the same Document ID came from the same original file.

Other details:

  • Comments and highlights, each carrying the commenter's name.
  • A digital signature, with the signer's name and certificate.
  • Photos inside the PDF that keep their own camera details and GPS location.
  • A template's leftover title, such as "Copy of Proposal - Acme Corp", which gives away where it came from.

How to see a PDF's details

  • Acrobat or Acrobat Reader: File → Properties → Description shows the title, author, creator, producer and dates. The "Additional Metadata" button (where available) shows the XMP data.
  • Chrome or Edge: open the PDF, then the menu → Document properties.
  • Mac Preview: Tools → Show Inspector.
  • Everything at once: drop the file on our PDF metadata page. Signed out, it reads the PDF in your browser, without uploading it, and lists what it finds: author, software, dates, editing history, signatures, AI labels and photo details.
  • Command line: exiftool -a -G1 file.pdf shows every tag, including the XMP history.

How far can you trust it?

Treat PDF metadata as a clue, not proof:

  • It's easy to change. Anyone can edit the author and dates with free tools. And some tools only add a change on top, so the old values stay in the file, as we explain in how to remove metadata from a PDF.
  • It reflects the computer, not always the person. A shared office PC, a colleague's template or a company account can put someone else's name in the Author field.
  • Clocks can be wrong, and time zones follow the computer's settings, not necessarily where the person is.
  • Absence means little. Many export paths and online converters drop the details. A blank Author field doesn't mean the file is anonymous by design.

In legal cases, lawyers and experts look at metadata alongside everything else: emails, file systems, and whether the dates are consistent. The PDF alone rarely settles who made it.

Can a PDF tell who opened or read it?

No. A normal PDF doesn't record who opened it, and opening it doesn't change it. Only if you save the file again do some apps update the modified date or add their own details. Tracking of who opened a document happens outside the PDF, through services that share it via a link.

If it's your PDF

If you'd rather your PDFs didn't say who made them, when and with what, remove the details before you send them. Our PDF metadata remover rewrites the file and removes the author, title, software, dates, XMP history and document IDs, plus the photo details inside and any AI labels. It removes digital signatures by default too, with an option to keep one. Comments stay, since they're content; delete them first if you don't want their names shared. There's more on this in how to remove your name from a PDF.

Frequently asked questions

Is there a way to tell who created a PDF?

Often. Check File → Properties for the Author field, and the Creator and Producer fields for the software. The name there is usually the account or computer name that made the file, but it can be edited or inherited from a template.

Can you tell when a PDF was created?

Usually. PDFs store a creation date and a modified date, often with the time zone. These come from the computer's clock and can be edited, so treat them as a clue.

Can the owner of a PDF see who viewed it?

Not from the PDF itself. A PDF doesn't record who opens it. Only sharing services that track link opens can show that.

What does "Producer" mean in PDF properties?

It's the software that created the PDF file itself, as opposed to the app the document was written in. It can reveal the operating system or browser used, such as "macOS Quartz PDFContext" for a Mac.

Can PDF metadata be faked?

Yes. The author, dates and software fields can be changed with free tools. That's why metadata is used as one clue among many, not as proof on its own.