If you know the password of your PDF but no longer want to enter it every time you open the document, removing the password is the simplest solution. Whether it's a bank statement, invoice, business report, contract, eBook, or personal document, password protection can become inconvenient when you access the same file frequently.

Fortunately, there are several ways to remove known password from PDF. You can use Adobe Acrobat, Google Chrome, Preview (Mac), online tools, or professional desktop software. Each method has its own advantages and limitations depending on your requirements.

In this guide, we'll explain how to remove known protection using different methods, compare their pros and cons, and help you choose the safest option.

What Does "Remove Known Password from PDF" Mean?

A password-protected PDF requires authentication before it can be opened or edited. If you already know the password, you can unlock the document and save a new copy without password protection.

Once the password is removed:

• You no longer need to enter the password every time.
• Opening the PDF becomes faster.
• Sharing the file with authorized users becomes easier.
• The document remains unchanged in terms of formatting and content.
• You can access the PDF offline without repeated authentication.

Note: These methods should only be used on PDFs that you own or have permission to modify.

Why Remove a Known Password from PDF?

Users commonly remove passwords from PDFs for several practical reasons:

• Avoid entering the password repeatedly.
• Simplify document sharing within an organization.
• Store personal documents securely on trusted devices.
• Reduce delays when accessing frequently used PDFs.
• Improve productivity when handling multiple password-protected files.
• Remove passwords before merging, splitting, or editing PDFs.
• Archive documents for long-term access.

Method 1: Remove Known Password from PDF Using Adobe Acrobat Pro

Adobe Acrobat Pro allows users to permanently remove password security from PDF documents.

Steps

1. Open the PDF in Adobe Acrobat Pro.
2. Enter the correct password.
3. Click File > Properties.
4. Select the Security tab.
5. Choose No Security under the Security Method.
6. Enter the password again for verification.
7. Click OK.
8. Save the PDF.

Advantages

• Official Adobe solution
• Removes password permanently
• Preserves formatting
• Suitable for business documents

Limitations

• Requires Adobe Acrobat Pro subscription.
• Not available in Adobe Reader.
• Expensive for occasional users.
• Cannot process multiple PDFs efficiently.

Method 2: Remove Known Password from PDF Using Google Chrome

Google Chrome can create a new copy of an unlocked PDF after you enter the correct password.

Steps

1. Open the PDF in Google Chrome.
2. Enter the password.
3. Press Ctrl + P.
4. Under Destination, select Save as PDF.
5. Click Save.
6. Choose a location for the new PDF.

The saved PDF usually no longer requires the password.

Advantages

• Free method
• No additional software
• Simple process

Limitations

• Doesn't work for every encrypted PDF.
• Some permissions may remain.
• Not suitable for batch processing.
• Metadata or bookmarks may not always be preserved.

Method 3: Remove Known Password from PDF Using Preview (Mac)

Mac users can use Preview to save an unlocked copy.

Steps

1. Open the protected PDF in Preview.
2. Enter the password.
3. Click File > Export as PDF.
4. Choose the destination.
5. Save the file.

The exported PDF is generally saved without password protection.

Advantages

• Built into macOS
• Free
• Easy to use

Limitations

• Available only on Mac.
• Doesn't support bulk processing.
• Some advanced security settings may remain.

Method 4: Remove Known Password from PDF Using Online Tools

Many websites allow users to upload password-protected PDFs and remove passwords after verification.

Typical process:

1. Visit an online PDF website.
2. Upload your PDF.
3. Enter the password.
4. Unlock the document.
5. Download the unlocked PDF.

Advantages

• No installation required
• Accessible from any device
• Quick for one or two files

Limitations

• Uploading confidential files poses privacy risks.
• Internet connection required.
• File size restrictions.
• Daily usage limits.
• Slower for large PDFs.
• Potential compliance issues for business or legal documents.

For sensitive files such as financial reports, contracts, medical records, or confidential business documents, offline software is generally a safer choice.

Method 5: Remove Known Password from PDF Using Automated Tool (Recommended)

If you regularly work with password-protected PDFs, a dedicated desktop solution offers the most reliable and secure experience. Try SysTools PDF Password Remover Software. This is an advanced offline utility for Windows or macOS. Using the solution, you can easily remove known passwords and owner permissions from PDF document in batch mode. 

The other highlights of the tool include fast processing, removal of PDF passwords, and permissions like editing, content copying, printing, and more. Most importantly, this is a cost-saving and reliable utility for professionals, businesses, and more. Now, follow the quick steps to remove known password from PDF document using automated tool: 

Steps

1. Install and launch the aforementioned software.
2. Click Add Files or Add Folder.
3. Import the password-protected PDF(s).
4. Enter the known user password (if prompted).
5. Click the Save button and choose the destination folder using Change option. 
6. Click Unlock.
7. The software creates unlocked copies of your PDFs.

Final Words 

In the above guide, we have shared how to remove known password from PDF document. Among all the techniques, users can effortlessly remove security in batch mode. Compared to all the methods, SysTools mentioned utility is reliable and useful for the users. Using this solution, you can remove known user password in seconds.