Utilumo
LightDarkSystem
Explainer1 min readUpdated June 29, 2026

What metadata is hidden in a PDF?

Short answer

A PDF stores metadata alongside its pages, including the author name, the software that created it, and creation and modification dates. Some PDFs also keep edit history or embedded data. This information travels with the file when you share it.

What a PDF records about you

Beyond the visible pages, a PDF holds a metadata block. Much of it is harmless, but some fields can reveal more than you intend when a document leaves your organization.

  • Author and creator names
  • The application and operating system used to produce the file
  • Creation and last-modified timestamps
  • Title, subject, and keywords
  • Sometimes embedded fonts, comments, or earlier revisions
Why it mattersA document that looks anonymous can still name its author and the exact software and time it was made. For sensitive files, check the metadata before sharing.
Try it: PDF Metadata ViewerInspect the metadata stored in a PDF locally in your browser.Open tool

Removing it before you share

If the metadata reveals more than you want, strip it so the shared copy carries only the pages. This is the document equivalent of removing EXIF from a photo. See What is EXIF metadata?.

Try it: Remove PDF MetadataRemove metadata from a PDF locally and download a clean copy.Open tool

References

Questions

Does redacting text in a PDF remove its metadata?

Not necessarily. Visible redaction and document metadata are separate. You should check and clear the metadata as its own step before sharing.

Is PDF metadata visible to anyone who opens the file?

Most viewers show it under document properties, and anyone with the file can read it with the right tool. Treat it as public once you share the PDF.

Do these PDF tools upload my file?

No. The PDF is read and processed locally in your browser tab and is never uploaded.

Keep reading

Explainer2 min readWhat is EXIF metadata?EXIF is the hidden metadata cameras and phones write into photos, including GPS location, device model, and timestamps. Here is what it stores and how to remove it.Read
Guide1 min readHow to redact text safelyRedacting text means truly removing sensitive details, not just hiding them. Here is how to do it so the original cannot be recovered.Read