How to Password Protect PDF with Adobe Reader and Adobe Acrobat

Do you have important PDF documents that need to be protected from unauthorized access? PDF format remains the most effective way to create and share PDF documents. Yet, sometimes it is necessary to ensure that the PDF documents you create do not fall into the wrong hands. The best way to do that is to password-protect the PDF document.

Adobe Reader and Adobe Acrobat, the most popular PDF tools in the market can help you protect PDF documents in this way. This article looks at how you can password-protect a PDF with and without Adobe Acrobat.

Part 1. Which Password-Protection Method Should You Use?

If the PDF contains a contract, financial statement, ID document, or other confidential material, prefer a local desktop method. An online tool must receive the file before it can encrypt it.

Part 2: Can You Password-Protect PDFs with Acrobat Reader for Free?

No. The free Adobe Acrobat Reader is mainly for viewing, commenting on, filling, signing, and printing PDFs. It can ask you for a password when you open a protected PDF, and it respects restrictions set by the file's author, but it does not create password security for a PDF.

There is also no product called "Adobe Reader Pro." The paid desktop product is Adobe Acrobat Pro. If Reader shows an upgrade prompt when you choose an advanced protection tool, that prompt is directing you to Acrobat, not unlocking a hidden free Reader feature.

Part 3. How to Password Protect a PDF for Free Without Acrobat

As we've mentioned in the previous part, Adobe Reader does not provide an option to password-protect PDFs. And if you don't have access to Adobe Acrobat, UPDF is a good alternative. This software has numerous features to help you manage PDFs in all ways, including password protection for documents with open passwords or permissions passwords, checking the security of your documents, editing, annotating, OCR, summarizing, etc. Try this PDF password protector now by downloading it.

Password protecting a PDF document using UPDF is very easy, and just use these simple steps:

Step 1: Open UPDF on your computer and then open the PDF document that you want to password-protect by clicking the "Open File" button.

Step 2: With the document opened, click on the narrow next to "Save" and choose the "Protect Using Password" icon on the right toolbar.

Step 3: To add an Open Password to the PDF, select the "Document Open Password" option in the popup that appears.

Step 4: If you want to add a permissions password that will restrict editing, choose the "Permissions Password" option in the popup.

The Permissions Password restricts various functions including printing, editing, and copying by default. If you would like to customize this option, click on "More Options" to add more restrictions or even set permissions for editing, printing, and copying separately.

Most importantly, you can enter the password with UPDF on iOS and Android because UPDF is compatible with Windows, Mac, iOS, and Android.

In addition to the password protection feature, UPDF offers a range of other valuable functions for enhanced PDF management. Here are some of the key features you can access with UPDF:

• It is one of the best PDF readers in the market with intuitive navigation tools and annotation tools including text boxes, shapes, and highlighters.
• It offers many different editing tools to edit the text, images, links, font, font color, font size, and background in the PDF.
• It supports creating, filling, and signing PDF forms digitally.
• With the accurate OCR feature, you can turn the scanned PDFs into editable format.
• It is also a good way to organize the pages on any PDF document, allowing you to reorder, replace, rotate, delete, and even add new PDF pages to the PDF document.
• It converts PDF to other formats, such as Word, Excel, PPT, HTML, XML, Image, etc.
• It has a UPDF AI feature to help you analyze, summarize, translate, explain, and rewrite your PDF easily.

After learning about UPDF's key features, why not give it a try? Download and test out the features now!

Part 4: How to Password Protect PDF with Acrobat Online for Free

You can also use the free Adobe online tool to add a password to your PDF document. Here's how it works:

Step 1: Go to the Acrobat online protection tool on any browser to access the password protection tool you need.

Step 2: Click "Select a File" to import the PDF file you want to protect.

Step 3: On the next screen, set a password to protect the PDF. Enter the password again to confirm and then click "Set Password".

Step 4: You can then click on "Download" to get the password-protected PDF on your computer.

Part 5: How to Password Protect a PDF with Adobe Acrobat

In addition to the two free methods mentioned above, there is a paid option to apply password protection to PDFs using Adobe Acrobat. Follow these steps to utilize this method:

Step 1: Open the PDF file that you want to protect in Acrobat. With the document open, choose "Tools > Protect." And then choose "Protect Using Password".

Step 2: Choose if you want to simply restrict editing with a password or if you would like to encrypt the entire file with a password or viewing.

Step 3: Set the password you would like to use as desired.

Step 4: Click "Apply" to save the changes made to the document.

Part 6. Open Password vs. Permissions Password

Think of an open password as the lock on the front door and a permissions password as rules posted inside the room. If information must never reach the recipient, remove it with true redaction before adding either password.

Part 7. Adobe Reader, Acrobat Pro, Adobe Online, or UPDF?

Choose based on the protection you actually need. Reader is suitable for consuming protected files, Adobe online is convenient for a basic open password, and Acrobat Pro or UPDF is the correct route for local encryption with permissions controls.

FAQs

Conclusion

You cannot password protect a PDF in the free Adobe Acrobat Reader app. Use Adobe Acrobat online for a basic open password, Acrobat Pro for Adobe's full local controls, or UPDF when you need local open-password and permissions-password settings without an Acrobat subscription.

For sensitive files, choose the local route, retain an unprotected master, and send the password through a different channel from the PDF.

Download UPDF for free to add the right password type on your device — installation is free, and Pro removes the trial watermark from exported files.