How to Encrypt/Password Protect a PDF File Online & Offline

One of the easiest ways to prevent unauthorized access to your office documents or important files is to password protect it. Once you password-protect a file, the content is encrypted. Only a user who has the password can access the file. Most office documents are saved as PDF (Portable Document Format). You can password protect a PDF file online or offline.

how to encrypt pdf file online and offline from unauthorized access

For the offline encryption, you need adobe acrobat reader. For the online encryption, you use some free online tools. You will learn how to password protect any PDF file both online and offline in this article.

How to Password Protect a PDF File Offline in Adobe Acrobat Reader

You will need Adobe Acrobat Reader installed in your PC. If you don’t have it yet, download and install it here. I have already explained how to remove password from a PDF file online and offline.

Open the PDF file with Adobe Acrobat Reader.

Go to File > Properties. Then activate the Security tab. This is where you restrict what can be done to the PDF file.

Click the Security Method drop down menu and select Password Security.

click on password security under the security tab

This prompts the Password Security – Settings dialog box.

Setting Password for your PDF File in Adobe Acrobat Reader

Select an acrobat compatibility version of your choice. It is advisable to select “Acrobat 5.0 and later” so that the recipient does not have to look for a higher adobe acrobat reader version to access the PDF file.

Check the “Require a password to open the document” check box. Now type your desired password in the Document Open Password field. Make sure you don’t forget the password because you will be required to provide it before you can open this document again.

Optionally, you can check the “Restrict editing and printing of the document” check box, under the Permissions section.

Note that a password will be required in order to change these permission setting once activated. Also note that you need to use a password different from the one you used earlier.

You can further change the Printing Allowed Changes Allowed settings in the Permissions section.

Now click OK as shown in the screenshot below.

password protect pdf file in adobe acrobat reader

Another dialog box pops up asking you to confirm the Document Open Password. Type in the password and click OK.

confirm the document open password

Click OK again to close the Document Properties dialog box. You can always come back to change the settings by clicking Change Setting in the Document Properties dialog box.

Now press Ctrl + S to save the changes you have made to the PDF file. Close the PDF file.

Congrats! you have successfully encrypted the PDF file. Adobe Acrobat Reader will add the word “SECURED” after the PDF file name when you open the file.

So when next you try to open the PDF, a Password dialog box will pop up. You must type in the password and press OK to access the content of the file.

enter the password of the encrypted pdf file

Now let me show you how to password protect a PDF file with a free online tool.

See:

How to Password Protect a PDF File with a Free Online Tool

Free online PDF file protection tools become very useful when you don’t have Adobe acrobat reader installed in your device, including mobile phones. You can simply use these free online PDF file lockers. There are many free online tools you can use to password protect your PDF files. I will show you how to use one of them and then list the other online free tools with their links.

Setting Password for your PDF File with PDF2Go Protect PDF Tool

This is one of the popular online free PDF protection tools. With this too, you can also change the actions that can be performed in the PDF file such as copying, printing and modifying.

To use this tool:

Open https://www.pdf2go.com/protect-pdf in a new tab.

Choose the PDF file you wish to password protect. You can choose from your device, enter the URL of the file, choose from Dropbox or even from Google Drive. Once you choose the file, click on Open to upload it to the pdf2go server as shown below.

choose the pdf file to password protect

Now enter the open password. Confirm the open password.

Specify the usage rights you wish to restrict: Prevent Printing, Prevent Copying, Prevent Modifying.

Now enter a permission password. Note that the permission password should be different from the open password.

Confirm the permission password you entered.

Optionally, you can check the Enable Rasterize check box so that all the contents of the PDF file will be merged into one, non-searchable layer.

Now click the START button as shown below.

pdf password protection settings

The encryption process starts. After the file has been encrypted successfully, you can now download the encrypted PDF file. In most cases, the download start automatically.

enable rasterize to merge the pdf file content

After the PDF file has downloaded, try to open the file. You will be required to enter the Open password.

Check:

Other Free Online PDF Encryption Tools

Here are some other free online tools you can use to password protect your PDF files. They are similar to PDF2Go Protect PDF tool.

Conclusion

You have learnt how to password protect and encrypt your PDF files online and offline from unauthorized access. Feel free to use any method that suits you at any point in time. Also see how to easily password protect and recover password of any word document online and offline for free.

Help your social media friends discover this amazing tutorial article by clicking a share button. Don’t forget to subscribe to our blog via email to get notified when we drop new tutorial article. Enjoy!

Recommended Business and Entrepreneurship Books

the passionate entrepreneurs strategies book by buzzer joseph

The Passionate Entrepreneur’s Strategies: Learn how to discover business ideas that will be successful, grow multiple online income streams, make money from home, attract new & retain customers, applications of SWOT analysis in any business, skills that will help you succeed as an entrepreneur, self-discipline, etc. Lucrative Business Ideas Series Book 1. By Buzzer Joseph. Read more about the book.

how to make money from blogging and affiliate marketing book by buzzer joseph

How to Make Money from Blogging & Affiliate Marketing: Learn the Step by Step Guide of Creating, Growing & Optimizing your WordPress Blog from Scratch for Search Engines (SEO) & How to Make Money through Google AdSense, Affiliate Marketing & Other Strategies for Earning Passive Income Online. Lucrative Business Ideas Series Book 2. By Buzzer Joseph. Read more about the book.

how to make money self publishing kindle books by buzzer joseph

How to Make Money Self-Publishing Kindle Books for Beginners: Learn the Step by Step Guide to Self-Publish a Best Selling Book on Amazon KDP, How to Design Book Covers with Adobe Photoshop, Format, Edit & Proofread your Book Manuscript with Microsoft Word, Promote your Book on Various Online Platforms & Earn Monthly Passive Income Online. Lucrative Business Ideas Series Book 3. By Buzzer Joseph. Read more about the book.

diy grid and off-grid solar pv installation guide by buzzer joseph

Complete Solar PV System Installation Guide: DIY guide on how to install grid-connected & off-grid solar PV systems, how to build solar-powered electric cars, convert conventional cars to electric cars, online & offline ways to make money from solar energy sector (including stocks), electrical wiring & protection system installation guides, plus free resources for skill acquisition and personal development. Lucrative Business Ideas Series Book 4. By Buzzer Joseph. Read more about the book.

how to make money from cryptocurrency trading and investments by buzzer joseph

How to Make Money from Crypto Trading & Investing for Beginners: Step by step guide with screenshots on the basics of blockchain technology, bitcoin & altcoins, crypto security tips, cryptocurrency market analysis (FA & TA), long term & short term trading, how to calculate your profits in excel, legit ways to make money with cryptocurrencies, DeFi yield farming & staking, how to use any centralized & decentralized exchange platform & more, plus crypto investment bonus! Lucrative Business Ideas Series Book 5. By Buzzer Joseph. Read more about the book.

Subscribe to Our Blog Newsletters (Enter your email address)

* indicates required
Follow us on social media

Recommended For You

About the Author: Buzzer Joseph

I am an entrepreneur who believes that anybody can achieve whatever goal he sets, so long as you follow the right path. I fully decided to take entrepreneurship as a lifestyle in 2014 and have never regretted that decision. Even though I failed many times, but my failures helped me discover my hidden potentials. Check out my Amazon Author Page at https://amazon.com/author/buzzerjoseph. I blog at Buzzing Point - https://www.buzzingpoint.com and Microsoft Tutorials - https://www.microsofttut.com where I help young entrepreneurs to discover their hidden potentials and how to turn their passions into long term income streams. Also, I am very active in Quora, especially in my spaces, Lucrative Business Ideas - https://lucrativebusinessideas.quora.com/. In fact, I can't do without the internet. I love surfing the net and making research. I love updating my fans on the latest buzzing info. Apart from surfing the internet, you can also find me playing badminton game or tennis.

Leave a Reply

Your email address will not be published. Required fields are marked *