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Protect PDF

Add password protection to your PDF file.

or drop a PDF here

How to Password Protect a PDF Online Free

  1. Upload your PDF Click "Select PDF file" or drag and drop the document you want to protect. Any PDF is supported.
  2. Enter a password Type a strong password in the password field. This will be required every time someone tries to open the PDF.
  3. Click Protect PDF Our tool applies 128-bit encryption to your document instantly, securing it with your chosen password.
  4. Download your protected PDF Save the encrypted PDF. Anyone who tries to open it will be prompted to enter the password you set.

Frequently Asked Questions

Is it free to password protect a PDF online?

Yes, completely free. No signup, no account, no hidden charges. Add password protection to any PDF instantly at no cost.

How strong is the encryption applied to my PDF?

We apply 128-bit AES encryption, which is the industry standard for PDF password protection. It is effectively unbreakable without the correct password.

Can I remove the password later?

Yes. Use our Unlock PDF tool to remove the password from a protected PDF. You will need to know the current password to remove it.

Is my PDF safe to upload for password protection?

Yes. All files are transferred over HTTPS and permanently deleted from our servers immediately after you download the protected file. Your documents are never stored or accessed by anyone.

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