Plicum Tools Protect PDF

Protect a PDF with a password

The document is encrypted: without the password it will not open. You can also decide what whoever opens it may do — print, copy text, edit.

In your browser
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In three steps

Load the PDF

The document is opened on your device.

Choose the password

The password stays on your device: it is not sent nor stored by us.

Encrypt the document

You get the encrypted PDF, which will not open without the password.

What happens to your file

In your browser

The file does not leave your device. Thirty-three tools out of forty.

Protect PDF: frequently asked questions

No, and this is not a Plicum limitation: encryption that can be bypassed does not protect. We do not store the password — it is never uploaded to our servers — so we could not recover it even if we wanted to. Keep it safe before distributing the document.

The document is encrypted with AES, the standard used by protected PDFs. Strength depends mostly on the chosen password: a short password remains the weak point even with solid encryption.

Yes: they are two separate things. You can restrict printing, copying and editing while leaving the document openable by anyone. Be aware, though, that those limits are enforced by the PDF reader, and not every reader honours them equally.

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Try it now

It opens in your browser, nothing to install. Five operations a day are free, with no payment details.