100% In-Browser Privacy • Zero Cloud Uploads
Password Protect PDF
Encrypt your confidential PDF files with strong password security directly inside your web browser.
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Drag & drop a PDF file here
or click to browse from your device
100% In-Browser Encryption
Passwords and document streams stay strictly inside your local browser memory. Files are never uploaded or tracked.
How to Password Protect a PDF
1
Select PDF
Choose the PDF file you wish to lock.
2
Set Password
Type and confirm your private document password.
3
Download Encrypted PDF
Download your password-protected PDF document immediately.
Frequently Asked Questions
Never. Both the encryption keys and your password string exist strictly in your browser RAM during the encryption process and are never logged or transmitted.
Because encryption is standard cryptographic security, a lost password cannot be recovered without a decryption tool or original backup.
Yes, standard PDF password protection is universally compatible across Adobe Reader, Apple Preview, web browsers, and mobile devices.