Protect PDF
Apply password security to control document access
Drop PDF here
or select a file from your device
Supported: .pdf
Security Notes
Protect PDF with Password Online — Complete Guide
Add password encryption to sensitive PDFs before email or cloud sharing. PdfPeaks lets you set user passwords (to open) and permission restrictions (printing, copying) so only authorized recipients access confidential content.
How It Works
Upload the PDF, enter a strong password, choose permission options, and apply protection. Download the encrypted file and share the password through a separate secure channel. Recipients need the password to open the document in standard PDF viewers.
- Step 1 — Upload: Select the PDF to encrypt.
- Step 2 — Secure: Set passwords and optional restrictions.
- Step 3 — Share: Distribute PDF and password separately.
Security & Privacy
We treat uploaded files as sensitive data. When you use the PDF protect tool on PdfPeaks, files are transferred over encrypted HTTPS/TLS connections and processed on secure servers in isolated temporary storage. They are used only to perform the operation you requested. Uploaded files and outputs are not permanently stored, are not used to train machine-learning models, and are never sold or shared with third parties for marketing. Temporary files are automatically removed after processing. For full details, see our Privacy Policy and Terms of Service.
Common Use Cases
Professionals, students, and everyday users rely on this tool for tasks such as:
- HR: Protect payroll and personnel files.
- Healthcare: Encrypt patient-related PDF exports.
- Finance: Lock tax and bank statements.
- Legal: Control copying of draft agreements.
- Personal: Secure ID scans and private letters.
Tips for Best Results
Store passwords in a manager — we cannot recover lost passwords after encryption. To remove protection you control, use Unlock PDF.