Encrypt PDF Files Like a Pro: Smart Online and Offline Tools

How can I encrypt PDF file and make sure that it won’t be accessed by anyone else without my authority? If a similar query about encrypting PDF documents has brought you here, then you have landed in the right place. These days, a lot of people would like to encrypt a PDF file to maintain its authenticity and confidentiality. Needless to say, after when you encrypt a PDF document, only selected users with its cipher key can access the file. Thankfully, there are all kinds of ways to encrypt PDF online or offline. In this post, I will cover some of these expert tips to encrypt a PDF file with or without a password.

PDFelement: A Secure and Easy Solution to Encrypt PDF Documents

Developed by Wondershare, PDFelement is widely used the world over by all kinds of professionals to manage their PDF documents. Although, the tool can perform various PDF operations, its feature to encrypt PDF files is one of its unique selling points. Using it, you can choose to encrypt PDF with password or without it. If you want, you can also set different permissions on your PDF files and protect them with a password as well. In this way, you can choose who can open the PDF document or who can make changes in it.
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  • There are different encryption techniques like 128-bit AES, 256-bit AES, and 128-bit RC4 that you can use to encrypt PDF files.
  • The application can further protect your PDF documents with passwords. You can additionally set a password for modification permissions as well.
  • Furthermore, you can even control whether the other user is allowed to copy, print, or make changes in the document.
  • The tool can also be used to sign PDF files, edit them, convert them, modify them, and do other important operations.
  • You can use PDFelement on leading Windows and Mac systems without any technical assistance.
To learn how to encrypt PDF files on Windows or Mac using PDFelement, just follow this basic drill.

Step 1: Load the PDF file to encrypt

Firstly, just launch PDFelement on your system, and from its home, choose to open a file. You also directly drag-and-drop a PDF file or a document of any other supported format to the application.

Step 2: Explore the encryption option

Once the PDF document has been loaded, go to the “Protect” tab from the main menu. From the provided options here, choose the password security feature.

Step 3: Encrypt the PDF document

This will launch a dedicated window on the interface for applying all kinds of protection on the file. If you don’t want to apply any password and just encrypt a file, then go to the “Encryption Settings” field and choose a preferred algorithm. Besides that, you can also encrypt PDF with password from here. Just enter any password and verify it to make sure the other user would have to enter it first to open the file. Apart from that, there is also an option here to protect different permissions in the document with a password. You can also disable the printing and further modification of the PDF file from here.

Nitro Pro: Another Fast Solution to Encrypt PDF Documents

Nitro Pro is another user-friendly application that is available for Windows to create encrypted PDF files. The application supports four different kinds of encryption algorithms (40-bit RC4, 128-bit RC4, and 128/256-bit AES) that you can pick as per your requirements. From these options, the 256-bit AES encryption is considered as the highest level of encryption. Also, you can encrypt PDF with password to ensure that only selected people can access it.
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  1. To use Nitro Pro, just launch the application, and open the PDF file on it that you wish to secure. Afterward, just go to the “Protect” tab on its interface.
  2. Now, just go to Password Security > More and simply select an option from the list of the preferred encryption algorithms.
  3. Furthermore, you can also choose to protect the PDF document with a password from here. The option can also be accessed from Security > Secure Document > Password Security feature.

Encrypt PDF Files with Online Tools

Last, but not the least, you can also encrypt PDF files online using a reliable web-based tool. There are a handful of online applications that you can use to first load your PDF file and then encrypt it by selecting a preferred algorithm. Some of these online tools are from web platforms like Sejda, PDF2Go, SmallPDF, SodaPDF, PDFpro, and so on. Though, if your PDF file is confidential and you don’t want your data to be compromised, then I would not recommend uploading it to any unreliable online source. Now when you know how to encrypt PDF on Windows and Mac, you can certainly keep your files safe. If you want, you can also encrypt PDF for email by using these tools and share your confidential files with others securely. As you can see, tools like PDFelement provide a one-click solution to encrypt a PDF file via different algorithms. If you want, you can use its trial version to encrypt PDF for free and be the judge of this application yourself!