- +
Start over

How to password protect a PDF file:

  1. Upload PDF file(s) to set a password.
  2. Enter a strong password to lock your PDF document.
  3. Click "Protect PDF", wait a few seconds, and your secured files will be ready to download.

Free PDF password protection

Sometimes it's necessary to forbid access for most users and allow only those who know the password. With our PDF Converter, you can make it without any cost.

Add password to PDF now

We can ensure the best security and hassle-free pdf encryption service. You can add a password now for free or get a PRO version and use advanced features like extra protection.

Maximum security is our mission

We are concerned about the privacy and security of our users' files, especially when we are dealing with file protection. Therefore, we make sure that users set strong passwords and automatically delete files after each conversion.

Easy to use every day

We build tools for everyone. It doesn't matter if you are a student, manager, or software engineer - everyone can use our software easily. We invest a lot to provide the best user experiences to all of you.

Encrypt PDF on Windows, Mac, iOS, or Android

FreePDFConvert is online software, so all platforms are supported. Locking PDF has never been easier and more accessible than it is now with our free online PDF Converter.

Plenty of PDF tools

We provide much more online PDF tools: PDF to Word, PDF to Excel, file compressor, page remover, and many other tools to help in your everyday work.

Get unlimited access
Sign Up now!
  • Unlimited document size
  • Convert multiple documents at once
  • Instant conversions
  • Unlimited access to all our tools
  • Use on any computer anywhere
  • Secure files with 256-bit SSL Encryption
  • Priority support
Get unlimited access to all our tools!
Get unlimited access
  • Unlimited document size
  • Convert multiple documents at once
  • Instant conversions
  • Unlimited access to all our tools
  • Use on any computer anywhere
  • Secure files with 256-bit SSL Encryption
  • Priority support
Select your premium membership