Password Protect a PDF Online — Free, No Upload
Add a password so a PDF can't be opened without it — or remove one you already know — without ever sending the file to a server.
Open Protect PDFWhy use this
- •Add or remove a password in the same tool
- •Encryption happens locally in your browser
- •No account, no file retained anywhere after you close the tab
How it works
- 1.Select your PDF and choose add-password or remove-password mode
- 2.Enter the password
- 3.Download the resulting file
Read more
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Frequently asked questions
- What happens if I forget the password I set?
- There is no recovery mechanism — the encryption is real, so losing the password means losing access to the file.
- Does this also redact content?
- No, a password only restricts opening the file. Use Redact PDF separately to black out specific sensitive regions before sharing.