PDF Harbor
document.pdf
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Password-protect a PDF on your device.

Lock a PDF with AES-256 encryption and choose whether it can be printed, copied or edited. Open protected PDFs too.

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  • Keeps working if you go offline
  • Files live in this tab and are gone when you close it
  • Built on open engines: pdf.js, Tesseract and qpdf

Drop PDF or Word files here

Several PDFs are merged in the order you choose.

Or start with a tool

Organize

Convert

Sign and secure

How it works

  1. Open your PDF.
  2. Press Protect and type a password twice.
  3. Download the protected copy.

Questions

Are my files uploaded anywhere?
No. PDF Harbor runs entirely in your browser. Your files are read and processed on your device and are never sent to a server — you can check it in the counter on the home page or with your browser’s network tools.
What if I forget the password?
The file can’t be opened without it, and there is no way for us to recover it. Keep it somewhere safe.
Can I remove a password?
Yes. Open the protected PDF, type its password and save it again.

They will be merged in this order, or continue with just one.

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Happening on your device