author avatar
16 July 2020  Amanda J. Brook  Senior Product Manager
 

Summary
As PDF is widely used, we should attach importance to PDF protection. In this essay, we will introduce 5 pieces of software to lock and encrypt PDF files.



how to password protect a pdf file without acrobat pdf encrypt software

Why We Lock & Encrypt PDF?

Protect Copyright

To protect files from illegal use, many users lock their PDF documents. So, it is necessary to set a password to avoid PFDs being copied or printed documents without authorization.

Protect Original Contents

Locking the PDF document ensures the original contents. If you have commented on the PDF document or set the specific layouts, the locked PDF files avoid being modified.

Restrict Access

Password encryption can prevent PDF documents from being opened and read by the unauthorized people. Encryption is not only for confidential files but also for authorization. If you sell a PDF file or send a subscribed PDF to the other people, you can encrypt the PDF files to restrict them being opened by the unauthorized people.

Top 5 PDF Encryption Software

1. Renee File Protector – For File Transfer

Renee File Protector is the software for file and folder encryption. This software can encrypt, lock and hide PDF documents, folders and drives, which can prevent them from being read or modified by the unauthorized people. Since the format is private, there is no specific decryption software.
Renee File Protector - Overall Protection to Your Data

Easy to use Few clicks for whole folder encryption process.

Overall protection Users can hide, lock or get other protection to files in local disk or USB disk.

High Security Classified encryption method prevents data from leakage.

Compression transfer Support to compress and encrypt any files to secure the file transfer security.

Advanced self protection Provide self

Easy to use Few clicks for whole folder encryption process.

Overall protection Users can hide, lock or get other protection to files in local disk or USB disk.

High Security Classified encryption method prevents data from leakage.

Free TrialFree Trial 800 users have downloaded and protect data!
1. Download and install Renee File Protector. Set a login password for this software.
set password in file protector to prevent data leakage
2. Click on [Encrypt File] > [Add Files].
select encrypt function in folder encryption software
3. Add the target PDF file and select to encrypt to .gfl or .exe.

Note: If the file is encrypted to .gfl, it should be opened with Renee File Protector.

The file encrypted to .exe cannot be over 4GB but can be opened without Renee File Protector.

click to encrypt file to gfl with renee file protector
4. Set a password to encrypt the file.
set password for glf file with renee file protector
After that, you can open the .gfl file in the computer with Renee File Protector installed. Or, you can directly decrypt the .exe file in any computer.

2. Renee SecureSilo – For Modify and Storage

Renee SecureSilo is the software designed to encrypt files and folders on PC, with various functions, including file encryption, USB protection and file block.
Renee SecureSilo – Encrypt Confidential Data

Encrypt files in seconds Encrypt files with virtual encrypted disk and whole process can be finished in 1 second.

User friendly Concise interface helps users master the software in short time.

High Security AES256 encryption algorithm helps Renee Seecure Silo encrypt files confidentially.

Encrypt any Data Support to encrypt images, videos, Office documents and software.

Overall Data Protection Solution Protect data in USB disk/hide/disguise files/ Password wallet.

Easy to use Few clicks for whole encryption process.

User friendly Concise interface helps users master the software in short time.

Encrypt any Data Support to encrypt images, videos, Office documents and software.

Free TrialFree Trial 800 users have downloaded and protect data!
1. Download and install Renee SecureSilo. Open the software and set a login password which should be entered for each login.
set the login password for renee secure silo
2. Click on [Encrypt Files] > [Create Silo].
create a virtual disk in renee secure silo
3. Name for the silo and set a location to store. Then, click [Next] to go on.
name for the disk and set the storage position in renee secure silo
4. Set a password for the silo.
set a new password for the virtual disk in renee secure silo
5. Set the size for the silo.
select a size range for the virtual disk in renee secure silo
6. As the silo is created, you can place the files into the silo and encrypt them.
finish creating silo to disk encryption
How to open the silo?
1. First, select the silo and right-click to select [Open]. In the [Open Silo] windows, enter the password to unlock the file.
click to open silo
2. You can then find the encrypted PDF files.
save pdf files with renee securesilo

3. Mgosoft PDF Security

Mgosoft PDF Security is the simple PDF encryption software. Users can set password to prevent their PDF documents from being opened and read. Users can also set the administrator password to restrict the unauthorized people printing, editing, copying and modifying the PDF files. But the download link of the software should be cracked. It seems very complicated.
pdf encrypt software

4. PDFelement

PDFelement is the professional PDF editing software. It allows users to edit, comment, organize and convert PDF documents. Users can also set password to forbid the unauthorized access to the PDF files.
pdf encrypt software change default pdf viewer

5. PDF Converter Pro

PDF Converter Pro is a multifunctional PDF converter. It allows users to encrypt PDF documents with passwords.
pdf encrypt software