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Protect PDF

Add an open password to your document; nobody can open it without the password. You can also turn off printing and text copying.

FreeNo sign-upIn your browser

How it works

  1. 1Choose or drop the PDF to protect.
  2. 2Type the password twice and optionally restrict printing and copying.
  3. 3Press Set password and download the protected PDF.

Password-protect a PDF file

Encrypting confidential documents such as payslips, bank statements, contracts or medical reports before emailing them is a good habit. The PDF protector secures the file with strong AES-256 encryption; only someone who knows the password can open it.

You can also set an owner password to restrict printing and copying text. We recommend sending the password through a different channel than the document, such as a call or a text message.

Encryption happens in your browser: neither your file nor your password is sent to a server. A forgotten password can't be recovered, so keep it somewhere safe.

You might also need

Unlock PDFRemove a password you know.Sign PDFAdd signature, stamp, date, text.Watermark PDFAdd a text or logo watermark.Compress PDFShrink files for email and chat.

Questions

How secure is it?
It uses AES-256, a strong standard also used by banks. Security depends mostly on the password length; we suggest at least 10 characters.
What if I forget the password?
The password is stored nowhere, so it can't be recovered. Keep your original (unprotected) file.
Are my files uploaded to a server?
No. Processing happens in your browser, on your own device; your files are never sent to Quillo servers or anywhere else. Nothing is left behind when you close the page.
Can I remove the password later?
Yes. If you know the password, Unlock PDF gives you an unprotected copy.
Will it open on phones?
Yes. The protected PDF opens in any PDF reader that asks for a password: phone, desktop or browser.

Your files are processed in your browser and never sent to our servers.

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