Protect PDF · 2 min read

How to Password Protect a PDF on Windows — Free

Windows does not have a built-in PDF password tool, but adding password protection takes under a minute in Chrome or Edge.

1

Open Chrome or Edge on Windows

Navigate to pdfeditor.onl/protect-pdf.

2

Upload, Set Password, Download

Upload your PDF. Enter a strong password in the password field. Click Protect. Download the encrypted PDF.

Tip: Use a password that combines uppercase, lowercase, numbers, and symbols. Keep a record of the password — there is no recovery option if forgotten.

Password Protect PDF on Windows — Free →

Frequently Asked Questions

Can I add a password to a PDF on Windows without Adobe?

Yes. pdfeditor.onl/protect-pdf works in Chrome or Edge on Windows — no Adobe Acrobat needed.

Is this free on Windows?

Yes — completely free in Chrome or Edge.

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