How to Lock a PDF with a Password
Add password protection to sensitive PDFs. 256-bit AES encryption keeps your documents secure.
Server-side processing with instant auto-delete. No account needed. Files never stored.
Lock PDF in 4 Steps
Upload PDF
Select or drag your file. Up to 100MB. Encrypted during transfer.
Set Password
Choose a strong password. Use 8+ characters with letters, numbers, and symbols.
Confirm
Re-enter password to avoid typos. We don't store or see your password.
Download
Click lock. Your encrypted PDF is ready instantly. Files auto-deleted.
Why Use LoveUPDF
Simple, private, and secure.
256-bit AES
Bank-grade encryption. Same standard used by governments.
Passwords Private
We never store or see your password. Applied and forgotten.
Any Device
Works on phone, tablet, or desktop.
Auto-Deleted
Files processed in memory. Permanently deleted after download.
Common Uses
When you should password protect a PDF:
- Sending contracts or legal agreements
- Sharing financial statements or tax documents
- Protecting medical records
- Securing HR documents
- Sending personal identification
Your Privacy
256-bit SSL encryption during transfer.
Files processed in server memory — never stored on disk.
Permanently deleted immediately after download.
Passwords never logged or saved.