PDF Encrypter
Coolmuster PDF Encrypter

Encrypt Your PDF Files Anytime You Want

  • Set PDF with Owner Password to prevent the file from printing, editing, coping, and changing.
  • Add Owner Password to a PDF document to protect PDF from reuse.
  • Support 3 different encryption systems: 40 bit RC4, 128 bit RC4 and 128 bit AES.
  • Instantly add a password to a batch of PDF documents on mac at one go.
Available for:
Free Try Windows 11/10/8/7
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Why Should You Choose Coolmuster PDF Encrypter?

add user and owner password to your pdf files

Add User and Owner Password to Your PDF Files As You Like

The content in the PDF may be private and you don't want other people to see it. The information contained in the PDF is valuable, it could be a training course, bid file, healthcare record, price list or a consulting report. Any way, you don't want to lose them. Then just try to use this PDF Encryption program to add a password to protect your own PDF files.

  • Add User Password: You can set just a user password to control the opening permission of your PDF. Only those who know the user password can open your PDF.
  • Apply Owner Password: You can control the access permissions like copying, modifying, and high quality printing, with an owner password.
3 different security levels for your reference

3 Different Security Levels for Your Reference

For different situations, you may have different encryption needs in the daily life and work. So CoolMuster PDF Encrypter provide users with 3 levels of encryption system: 40 bit RC4, 128 bit RC4 and 128 bit AES.

  • 40 bit RC4: This is the lowest password protection which allows users to protect PDF document from printing, copying or editing individually.
  • 128 bit RC4 is higher than 40 bit RC4. It offers more detailed options for use to apply restrictions for PDF document.
  • 128 bit AES is undoubtedly become the highest password protection levels. It means Advanced Encryption Standard that gives stronger security measures to your file.
various options for pdf security

Various Options for PDF Security

Besides password and encryption level, there are also lots of other options for your reference, such as resolution settings, document printing, copying, etc. You're enabled to select all you wanted options with one click.

  • You are allowed to permit one or more privacies freely while preserving rest securities for your PDF document.
  • In 128 bit RC4 and 128 bit AES modes, you are allowed to release more privacies for your document.
  • Once you imported bulk PDF documents into this Mac PDF Protector, you can then protect all the files with the same password instantly at one time.
  • You can also choose the "Encrypt selected only" option for a partial encryption for some of the PDF files you've picked up.
more other attractive features

More Other Attractive Features

  • Drag and drop operation is supported that you can drag all existing PDF files that you want to encrypt together at one time to the program interface directly.
  • No advertising plugin or spyware, no viruses.
  • You can recover files one at a time or in batch.
  • No matter how large your PDF file is, you can finish the encrypting process within 3 simple steps.

Don't Take Our Word For It

FAQs and Tips for Coolmuster PDF Encrypter

How to Encrypt PDF Files How to Remove PDF Password Convert Password Protected PDF Copy and Paste Content from PDF Copy Text from Protected PDF How to Edit Secured PDF Easily

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