Password Protect PDF
Encrypt a PDF with a password. Lock your document before sharing.
Uses qpdf (WASM) locally in your browser — standard PDF password encryption, nothing 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. pdf-lib encrypts the file in your browser.
This tool only adds protection. Use a PDF reader to remove passwords if you know the original.
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