Why is this the one tool that needs a server?

Encryption is genuinely impossible in a browser — there is no JavaScript implementation of PDF encryption that a reader will accept. The file goes to the document service, is encrypted with qpdf, and comes straight back.

Is my password stored?

No. It is passed to the converter to do the work and is never written to disk or logged.

Nobody can recover it. That is the point of encryption — keep the password somewhere safe before you send the file on.

Protect PDF

Lock a document with a password so it cannot be opened without one.

Needs a server connectionnew

Encryption cannot be done in a browser. An admin points this at a qpdf service under Admin → Integrations.

How to protect pdf

Choose the PDF you want locked.
Set the password that will be needed to open it.
Press Protect. The encrypted copy downloads when it is ready.

Questions

Why is this the one tool that needs a server?: Encryption is genuinely impossible in a browser — there is no JavaScript implementation of PDF encryption that a reader will accept. The file goes to the document service, is encrypted with qpdf, and comes straight back.
Is my password stored?: No. It is passed to the converter to do the work and is never written to disk or logged.
What if I forget it?: Nobody can recover it. That is the point of encryption — keep the password somewhere safe before you send the file on.

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Word-level differences between two revisions, with every change listed.

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