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Lock PDF
Add password protection to your PDF document
Drop your PDF files here
or click to browse
Max 50MB per file, up to 200 pages total
No PDF selected
Upload a PDF file to add password protection
Secure server processing
Your file is encrypted during transfer, processed instantly, and automatically deleted after encryption.
About password protection
The PDF will require a password to open. Make sure to remember your password as it cannot be recovered.
How to Lock a PDF with Password
1
Upload PDF
Select the PDF file you want to protect.
2
Set Password
Enter and confirm a strong password for the PDF.
3
Lock PDF
Click Lock to encrypt the document with your password.
4
Download PDF
Download the password-protected PDF.