Protect PDF with ZypFile

Add a password to your PDF online for free. Encrypt and protect sensitive PDF documents from unauthorized access — entirely in your browser.

Common questions

What type of encryption does ZypFile use?

ZypFile uses AES 128-bit or 256-bit encryption to protect your PDF, which is the industry standard for PDF security.

Can I set different permissions for the PDF?

Yes. You can restrict printing, copying, and editing separately while still allowing the file to be opened with a password.

Will the recipient need special software to open the protected PDF?

No. Any standard PDF viewer (Adobe Acrobat Reader, browser PDF viewers, etc.) can open password-protected PDFs.

Is my password stored anywhere?

No. Your PDF and password are processed locally in your browser and never sent to any server.