Add a password to a PDF
Short answer
Add a password to a PDF in your browser: choose the file, set a password, and download the protected copy. No signup and nothing is uploaded.
Choose a PDF to password-protect
or drop your file here.
Encrypted in your browser — nothing is uploaded
Runs in your browser — your file is never uploaded.
Adding a password is the simplest way to make sure a document can only be read by the people you give the password to. The original file on your computer is left untouched — you download a new, protected copy.
Send the password separately from the document itself. Emailing an encrypted PDF and its password in the same message protects against very little, since anyone who reads the message has both halves.
How to add a password to a PDF
- 1Add the PDF. Choose the document.
- 2Type a password. Enter and confirm it.
- 3Download. Save the password-protected PDF.
Frequently asked questions
Is the original file changed?+
No. You download a protected copy; the file on your computer is left exactly as it was.
Does it cost anything?+
No — it's free, ad-supported, and there's no signup or email wall.