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Protect PDF
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You cannot import more than 3 files!
Need help? More information below.

Protect PDF

Secure and lock a PDF with a password.

How to protect a PDF with a password?

  1. Import your PDF documents

    Drop one or several files that you want to protect (encrypt) in the drop area. You can also use the file explorer.
    Once the PDFs are imported, you have now access to the tool.
    You can change the files in the left side panel.

  2. Choose a password

    Enter a password in the first entry, and repeat it in the second one, so that we make sure you make no mistake.
    We help you choosing a good password, by showing you if the password you chose is strong enough.

  3. Provide the current password for the already encrypted PDFs

    If some files are already protected with a password, we need the current password to be able to change it. Provide it, or skip this step to ignore these files.

  4. Download the PDFs

    Once everything is fine, you can download your brand new files by clicking on the "download" button.

Fast PDF encryption

Protect a PDF within a few seconds

Encrypting your documents will only take a few seconds on our tool. It's very fast, accessible to everyone, and most importantly, efficient.
PDF protection

Protection of your PDFs guaranteed

Once your documents are protected on Visual PDF, it will take thousands of years for a hacker to be able to unlock it. In other words, you can sleep soundly.
Strong password

Choose a good password

For maximum protection, choosing a strong password is advisable. We recommend that you choose a password of at least 8 characters, preferably with letters, special characters and numbers.
Free online tool

Securing a PDF for free

To use our tool, you don't need to pay, or even create an account! Protect your documents for free now.
Easy PDF lock

Easiest way to encrypt a PDF

To lock a PDF, nothing could be simpler. Choose a password, validate, and it's done! You can even change the password of already protected files.
Lock PDF anytime

Protect your document at any time, anywhere

Our services are accessible from any device (Windows, Mac, Linux, Android, iPhone...), anytime, anywhere. No need for software installation.

Why protecting a PDF with a password is important

In the same way that we protect our confidential documents in a safe, our sensitive digital information deserves to be protected. Adding a password to a PDF locks it, so that no one can open it without this password.

Visual PDF's free tool to protect a PDF allows you to guarantee total security of your data thanks to a strong encryption algorithm, so that you no longer have anything to fear.