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How to password protect a PDF

Nov 29, 2019 · 2 min read

How to password protect a PDF

We store important documents in PDF format every day. Contracts, bank documents, and other sensitive information we don’t want in the wrong hands. However, they can be stolen when sent over unsecure connections or if your device is hacked. If you know how to password protect a PDF, however, you can still keep it secure. Here’s how.

How to password protect a PDF in Adobe Reader

Adobe Acrobat is the most popular program to access PDF documents. The DC Pro version can also password protect them:

1. Click File menu in the top-left corner, choose Open, choose your file and open it;

How to password protect pdf

2. Go to File -> Properties;

How to password protect pdf

3. Choose the Security tab;

How to password protect pdf

4. In the Security Method menu, choose Password Security;

How to password protect pdf

5. Tick the box Require a password to open the document and enter your password in the designated field. Be sure to check our tips on how to create a strong password. You can also use a password manager to memorize more complex and safer passwords.

How to password protect pdf

How to password protect a PDF in MacOS Preview

You can also encrypt PDF files with the MacOS Preview app:

1. Click File, choose Open and select the file you wish to encrypt. Open it. It should not necessarily be a PDF file as you will be able to convert it to PDF later;

How to password protect pdf

2. Then go to File -> Export as PDF;

How to password protect pdf

3. Click on Show details for more options;

How to password protect pdf

4. Tick Encrypt and then enter your password in the Password and Verify fields. Click on Save. You can either overwrite the old file or create a new one. Your newly saved file will be password protected.

How to password protect pdf

How to password protect a PDF in Microsoft Word

1. Open MS Word;

2. Click Open tab;

How to password protect pdf

3. Click Browse;

How to password protect pdf

4. Select the document you want;

How to password protect pdf

5. Click File;

How to password protect pdf

6. Choose Save As;

How to password protect pdf

7. Select PDF as the file type;

How to password protect pdf

8. Click More Options;

How to password protect pdf

9. Click Options;

How to password protect pdf

10. Check the Encrypt the document with a password box;

How to password protect pdf

11. Set a password. Now your file will be encrypted.

How to password protect pdf

Third-party apps

Unsurprisingly, there are a lot of third-party apps you could use. However, use PDF encryption software under your own discretion – make sure it is safe and does not collect your data.

NordLocker as a solution

NordVPN recently released a file encryption application called NordLocker. It uses end-to-end encryption to protect your files. It can protect your PDFs and any other files with powerful encryption. Even if a snooper gets a hold of your files, they won’t be able to read them without a specific key.

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Paul Black
Paul Black successVerified author

Paul is a technology and art enthusiast who is always eager to explore the most up-to-date issues in cybersec and internet freedom. He is always in search for new and unexplored angles to share with his readers.


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