MammothPDF
Tools

Sanitize PDF

What is in the file but not on the page - who wrote it and with what, attached files, scripts that run in the reader, reviewers' comments, page thumbnails - taken out before the document leaves your hands. The pages themselves stay as they are. All on your own device.

Each row is one kind of hidden data; the number is what the selected file holds.

Drop PDF files here

Drag them straight from your desktop

or
  • PDF files only
  • Up to 15 MB each
  • 2 files a run - unlimited with Pro

Frequently asked questions

What does sanitizing remove?

Everything that is in the file but not on the page: the document's metadata (author, title, the application and dates, the XMP packet, an application's private data, including the XMP inside images), files embedded in it, JavaScript and the actions that run on open or on a click, reviewers' comments and markup with their popups, and the stored page thumbnails. Links and form fields are switches of their own, off by default. The visible pages are left exactly as they are.

Is this the same as redacting?

No. Redaction removes something from the page - a name, a paragraph, part of an image. Sanitizing removes what is beside the page. Before a document leaves the house, do both: redact what must not be read, then sanitize what must not travel with it.

Are the removed things really gone?

Yes. The cleaned file is rewritten from its document structure, so an object nothing refers to any more is not written at all - an attachment's bytes don't linger somewhere in the file. A file that can't be rewritten that way yields no output rather than a half-cleaned one.

Is the PDF uploaded?

No. Everything happens in your browser; the file and what was inside it never leave your device.

Missing something, or did the result surprise you?

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