PDF Password Protector
Protect your sensitive PDF documents with password encryption. Uses AES-256 encryption — the industry standard. Set a custom password and download your secured PDF instantly.
How to Use
- 1Upload your PDF
- 2Enter a strong password (with strength indicator)
- 3Confirm your password
- 4Click Protect & Download to get your encrypted PDF
Need more power?
Upgrade to Pro for unlimited gated file-processing sessions and an ad-free experience.
Go Pro — $9/monthWhy use ShowPro's PDF Password Protector?
Frequently Asked Questions
How strong is the encryption?
We use AES-256 encryption, which is the same standard used by banks and governments. It's virtually unbreakable with current technology.
Can I remove the password later?
Once a PDF is password-protected, you cannot remove the password without knowing it. Make sure to store it securely.
What happens if I forget the password?
There is no way to recover a forgotten password. We strongly recommend using a password manager or storing the password securely.
Is my PDF uploaded to a server?
No. All encryption happens in your browser. Your sensitive documents never leave your device.
Does this work on all PDF readers?
Yes. Password-protected PDFs work with Adobe Reader, Preview (Mac), browsers, and most PDF viewers.