Security Tools
Lock PDF with Password
Encrypt your PDF file with a strong password. Prevent unauthorized access efficiently and securely.
Select PDF
or drop file here
How to protect PDF
1
Upload
Choose the PDF file you want to password protect.
2
Set Password
Enter and confirm a strong password for your document.
3
Download
Save the encrypted PDF to your device.
Security FAQ
How strong is the encryption?
We use standard PDF encryption compatible with all PDF readers.
Can I recover a lost password?
No, if you lose the password, the file cannot be opened. Please remember it.