How to Remove Metadata from a PDF

You can remove metadata from a PDF by printing it to a new PDF file, using Adobe Acrobat's Sanitize Document tool, or running ExifTool from the command line. A standard PDF can carry over 20 hidden metadata fields — your name, software versions, edit history, and even GPS data from embedded photos.

What Metadata Does a PDF Store?

PDF metadata lives in two places: the Document Information Dictionary and the XMP metadata stream. Both are invisible when you read the document, but anyone can pull them out in seconds using free tools. Common fields include:

• Author — your full name, pulled from your software account
• Creator and Producer — the apps used to create and convert the file
• Creation and Modification dates — exact timestamps of every edit
• Keywords and Subject — internal tags you may have set during drafting

A 2024 study reviewed 39,664 public PDFs from 75 government agencies and found that most had never been cleaned before publishing. A separate survey found only 36% of employees know how to properly remove PDF metadata (Digitaltoolpad, 2024).

How to Remove PDF Metadata — 3 Methods

Method 1 — Print to PDF (free, any OS):

Open the PDF, choose Print, and select "Save as PDF" or "Microsoft Print to PDF" as the printer. The new file is rebuilt from the rendered pages, which strips most metadata. This method is fast but not complete — it may leave your operating system username and the PDF printer's name in the file.

Method 2 — Adobe Acrobat Pro Sanitize (paid, most thorough):

Go to Tools > Redact > Sanitize Document. This removes metadata, hidden layers, embedded content, JavaScript, and form data in one step. It is the recommended method for legal, financial, or compliance documents where nothing can be left to chance.

Method 3 — ExifTool (free, command line):

Install ExifTool, then run exiftool -all= document.pdf. This creates a clean copy with all metadata stripped. It works on Mac, Windows, and Linux, and supports batch processing for multiple files at once.

Mistakes That Leave Your Data Exposed

Three common mistakes cause metadata leaks even after people think they have cleaned a file:

1. Drawing black boxes over text is not redaction. Most PDF editors save incrementally — the new content is appended, but the original text stays in the file's byte stream. Tools like QPDF can recover the hidden text underneath the black boxes. Use a proper redaction tool that rebuilds the file, or start from a clean copy.
2. Clearing Document Properties is not enough. The Properties dialog only edits the Info Dictionary layer. The XMP stream often holds a separate copy of the author and creator fields. You need to clean both layers to achieve real anonymity.
3. Emailing a PDF does not strip metadata. Email servers and clients never modify attachment contents. Your PDF arrives with every metadata field intact, no matter how many times it was forwarded. Clean the file before attaching it, not after.

FAQs About Removing Metadata from PDF