Protect PDF
Lock a PDF with a password before you share it.
Drag & drop your PDF here
or
Processed in your browser — never uploaded.
Password-protecting a PDF encrypts its contents so only people with the password can open it — essential for contracts, payslips, IDs, and anything confidential you send by email or shared link.
Set a password and the tool encrypts the document. Because it is done in your browser, your file and your password never travel to a server.
How to protect pdf
- 1Upload the PDF you want to protect.
- 2Enter a strong password (and confirm it).
- 3Press ‘Protect PDF’ to encrypt the document.
- 4Download the password-protected PDF.
Why use this tool
- Password-based encryption.
- Only those with the password can open the file.
- Your password is never uploaded.
- Secure in-browser processing.
Frequently asked questions
What happens if I forget the password?
There is no recovery. Because the file is encrypted and your password is never stored by us, a forgotten password cannot be reset. Keep it somewhere safe.
How strong is the encryption?
The document is protected with standard PDF encryption, which all major PDF readers support and prompt for on open.
Is my password sent anywhere?
No. Both the document and the password are processed locally in your browser.