Password Protect PDF
Encrypt a PDF with a password. Lock your document before sharing.
Runs locally — nothing is uploaded
How to use
- 1
Upload PDF
Select an unprotected PDF file.
- 2
Set password
Enter the password viewers will need to open the file.
- 3
Download locked PDF
Save the encrypted copy locally.
Frequently Asked Questions
Yes. Your PDF and password stay in the browser — the locked file is created locally and never uploaded.
This tool only adds protection. To unlock a file, open it in a PDF reader with the password and save an unprotected copy.
The tool applies modern 256-bit PDF encryption. Strength still depends on a long, hard-to-guess password and sending it on a different channel than the file.
Unlock it first, then protect it again here. This tool expects an unprotected PDF as input.
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