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Remove metadata from PDF

Check the fields, remove the supported records together, then add the downloaded copy again to verify the result. No field-by-field selection is required or offered.

1Files
2Inside

Add a PDF and everything it is carrying gets listed here first. Nothing is deleted until you press the button, and nothing is uploaded at any point.

3Remove

Mechanism

Follow each record from removal to verification

Begin with the author, creator, producer and dates in the document properties. The removal pass also clears supported document-level and page-level XMP, private application records and annotation author/date fields. Press Remove metadata once to clear that supported set together, then download the rewritten PDF. Add the output again and compare the report with the first one. The file is serialised anew rather than patched with another incremental save, but that is a metadata operation, not a search for sensitive material throughout the document.

Not taking our word for it is the point: the code that does this is on GitHub, tests included.

Limits

Checks that need a separate step

  • Document properties in a PDF viewer show only part of the picture. They may not expose page-level metadata, private application data or comment fields.
  • Embedded-image EXIF, attachments and form values stay in the document. Neither the removal pass nor a clean metadata report proves that those contents are safe to share.
  • Encryption prevents cleanup, including permission-restricted files that open without a password. Files identified as encrypted are returned unchanged.
  • Digital signatures will no longer validate after a rewrite. Keep a signed original when verification of that signature matters.
Questions

Checking a PDF after metadata removal

Can I clear only the author and keep the timestamps?

No. This tool removes its supported fields together. If you need selective editing, use a PDF metadata editor rather than treating this page as a field-selection interface.

What should the second report show?

The supported removable records cleared by the first pass should no longer appear. Content warnings can remain because attachments, scripts and form values are intentionally retained. Use the output file for this check, not the original.

Why is searching the PDF bytes for my name not enough?

PDF objects may be compressed or encoded. A plain text search can miss a value even before cleanup. Reinspect the supported fields and use an appropriate document inspection tool when you need a broader check.

Can I verify several downloaded PDFs?

Yes. Add the results as another batch and read each report. Each source file must be 100 MB or smaller; processing and rewriting take place in your browser.

Why did the byte count change?

The document is rewritten, so its representation can change as well as its metadata. Do not use a smaller file size as proof that the right records were removed. Compare the reports and open the output to check that the document still works.