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How to Password Protect a PDF
How to Password Protect a PDF

How to Password Protect a PDF

by Alexa Davis
Feb 27, 2024

PDF is a type of file format that is great for people to quickly and safely share files. Knowing how to password-protect a PDF may be handy for safeguarding confidential materials. This way you can make sure only those people who have the documents' passwords will be able to open them.

In this article, we offer you a quick guide that shows an easy way to add a password to PDF. In addition, you will find useful tips and answers to common questions regarding PDF encryption.

Password-protect a PDF online

PDF Candy is a web-based service that offers a variety of tools for working with PDF files. There are 47 tools in total, including the PDF password protector, that can be used on any device and operating system.

How to add a password to a PDF:

  1. Go to the "Protect PDF" tool in any browser.
  2. Upload the file from your device, Google Drive, or Dropbox.
  3. Add the password you think that's strong. Re-enter it for confirmation.
  4. Click the "Protect PDF" button to encrypt your PDF.
  5. Download the output file, or upload it back to cloud storage.

PDF Candy takes users’ privacy very seriously and is GDPR-compliant. Your data is never shared with third parties. After two hours, all files are automatically deleted from the servers if you don't do so manually.

How to encrypt a PDF

Advantages of the service:

Unlike other free tools to add passwords to PDFs, there's no watermark added to your documents. The content will remain unchanged. In case you do want to add an extra layer of protection, the website does allow you to add a watermark to PDF.

The intuitive interface makes the PDF encryption process almost effortless. Users also appreciate its ease of use and the various other tools - all available in one place.

The website allows users to convert PDF files to and from various formats such as Word, JPG, PNG, and more. Additionally, it offers tools for merging and splitting, compressing and editing PDFs, and more.

Tips on creating a strong PDF password

When choosing the password you wish to assign to your PDF, make sure it is strong enough. Below are a few suggestions on how to pick the best combination and what to do to keep your password secure.

  • Avoid using personal information. Do not use personal details such as your name, birth date, or address as your password. This data can easily be found by others and makes it easier for them to access your PDF.
  • Keep the password confidential. Only share the password with those who need to access the PDF. The more people who know the password, the higher the chances of it being leaked or shared without your knowledge.
  • Consider using a passphrase. Instead of using a single word as your password, consider using a passphrase – a combination of words or phrases. Passphrases are easier to remember but harder to crack compared to traditional passwords.
  • Test the password protection. After assigning a passkey to your PDF, it is essential to verify that it is functioning properly. This will help identify any issues or vulnerabilities that need to be addressed before sharing the document with others.
  • Change passwords regularly. Regularly changing the password for your encrypted PDF is essential, similar to any other online account. This helps prevent anyone from accessing the document if they manage to obtain the old password.
  • Don't exchange passwords via email. Electronic communication is not a secure form of communication, and sharing passwords over email can put your PDF at risk. If you need to share the password with someone, consider using a more secure method such as encrypted messaging apps.

How to unlock a PDF

When you no longer need the protection, you can use the PDF password remover to decrypt the document.

Depending on the tool you use, you are most likely to be asked to enter the security combination to remove the protection. Alternatively, if you forgot the password, some utilities may be able to unlock the PDF without the exact code.

Reasons to put a password on a PDF

It is now more important than ever to secure sensitive information shared in PDFs. This is due to the growing number of digital security threats. Below are a few most common reasons why people password-protect their PDFs.

Protecting Confidential InformationKeeping safe sensitive data such as financial records, personal IDs, and medical files by restricting access via password protection.
Controlling AccessTaking control over document access, especially useful for distributing files among multiple individuals or in corporate settings.
Preventing Unlawful DistributionAvoiding unauthorized forwarding or sharing of the document, ensuring it remains accessible only to intended recipients.
Compliance with RegulationsFacilitating obedience to industry laws such as HIPAA by securing sensitive information within PDF documents.
Protecting during File TransferAdding an extra layer of security when sending PDFs via email or online uploads, reducing the risk of interception by cybercriminals.
Protecting PrivacySafeguarding personal documents like financial statements or journals, maintaining privacy by requiring a password for access.

In conclusion, there are plenty of reasons to encrypt a PDF document. It's a simple yet effective way to protect sensitive information and maintain privacy in the digital world.


What is the difference between user-level and owner-level PDF passwords?

A user-level password restricts access to certain actions within the PDF, such as printing or editing. An owner-level password gives full control over the document. It is recommended to use both types of passwords for maximum security.

Can I add a password to a PDF on my mobile device?

Yes, many mobile apps offer the ability to password-protect PDF files. To secure your document, you can utilize online tools like PDF Candy to set a password on any device with an internet connection.


In conclusion, protecting documents such as PDFs is crucial in today's digital age. Remember to choose a strong and unique password, as well as consider using additional security measures such as digital signatures.

With the help of this article, you can confidently safeguard your PDFs from unauthorized access.

Don't overlook this security measure – take the time to password-protect important PDFs today.

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