How to Unlock a Locked PDF File in 2026 [Simple Steps]
A locked PDF file becomes a serious matter when you need to read, edit, print, or share an important document. PDF security is widely used by companies, educators, and individuals to prevent unauthorized access or changes. However, there are many situations where the lock becomes a problem for legitimate users.
You may have forgotten a password, received a restricted file from a co-worker, or downloaded a document that allows viewing but prevents editing and copying.
Unlocking a PDF file does not always involve bypassing strong encryption. In many cases, the document owner has already granted you permission, or the file only has basic usage restrictions.
Let’s learn every method to unlock a PDF file!
How to Unlock a Locked PDF File in 2026?
Before starting, it is important to identify the type of lock applied to the PDF. Some PDFs are protected with an open password, meaning the file will not open without it. Other PDFs open normally but restrict actions such as editing, copying text, or printing. The methods below cover both types of restrictions and work across Windows, macOS, and browser-based environments.
Make sure you only unlock PDFs that you own or have permission to modify. Removing security from protected documents without authorization may violate copyright or usage terms.
Method 1: Unlock a PDF Using the Known Password
If you already know the password, this is the safest and most reliable way to unlock a PDF file.
Locate the locked PDF file on your computer. Double-click the file to open it using a trusted PDF reader such as Adobe Acrobat Reader, Preview on macOS, or a modern web browser. If the file is protected, you will immediately see a password prompt.
Carefully type the password into the password field. Pay close attention to uppercase and lowercase letters, numbers, and special characters. Make sure Caps Lock is turned off and the correct keyboard language is selected.
Once the file opens successfully, access the document settings. In Adobe Acrobat, click on File in the top menu, then select Properties. A new window will open showing detailed information about the PDF.
Open the Security tab within the Properties window. Here, you will see the current security settings applied to the file. Look for the option that allows you to change or remove security.
Select the option that sets security to “No Security” or removes the password entirely. Confirm your choice if prompted.
Save the document by clicking File and then Save As. Choose a new file name or overwrite the existing file. After saving, close the PDF and reopen it to confirm that it no longer asks for a password.
Method 2: Unlock a PDF Using Google Chrome or Microsoft Edge
This method works for PDFs that allow viewing but restrict editing, copying, or printing.
Right-click on the locked PDF file and select Open with. From the list of available applications, choose Google Chrome or Microsoft Edge. These browsers have built-in PDF viewers that can open many restricted files.
Once the PDF opens in the browser, scroll through the document to make sure all pages are visible and loading correctly. This confirms that the file allows viewing access.
Press Ctrl + P on your keyboard to open the print dialog. Alternatively, click the Print icon from the browser’s menu.
In the Destination section of the print window, select Save as PDF instead of a physical printer. This option allows you to create a new copy of the document.
Click the Save button and choose a location on your computer to store the new file. Give it a clear name so you can easily identify it.
Open the newly saved PDF file. In many cases, the new version will no longer have restrictions on copying, editing, or printing.
Method 3: Unlock a PDF Using Adobe Acrobat Pro
Adobe Acrobat Pro is one of the most reliable tools for managing PDF security, provided you know the password.
Launch Adobe Acrobat Pro on your computer. Use the Open option to load the locked PDF file into the program.
When prompted, enter the password required to access the file. Without the correct password, Acrobat Pro cannot remove the security.
Once the document is open, click on Tools in the top menu. From the available tools, select Protect to view security-related options.
Choose Encrypt and then select Remove Security. Acrobat Pro will ask for confirmation before removing the protection.
Confirm the action and wait for the software to remove the restrictions. This usually takes only a few seconds.
Save the file using File and then Save or Save As. Close and reopen the document to verify that the security has been removed.
Method 4: Unlock a PDF Using Online PDF Unlocking Tools
Online tools can be helpful when you do not want to install additional software, but they should be used carefully.
Open a trusted PDF unlocking website using a secure browser connection. Make sure the site uses HTTPS and has clear privacy policies.
Click the upload button on the website and select the locked PDF file from your computer. Wait for the file to finish uploading.
If the PDF requires a password, enter it in the provided field. Some tools can remove basic restrictions without requiring a password.
Allow the website to process the file. This may take a few seconds or a minute, depending on file size.
Once processing is complete, download the unlocked PDF file to your computer.
Open the downloaded file and confirm that it no longer has the original restrictions.
Avoid using this method for confidential or sensitive documents.
Method 5: Unlock a PDF Using Desktop PDF Software
Many desktop PDF applications can remove restrictions when the password is known.
Install a reputable PDF management application on your Windows or macOS system.
Open the software and use the Open or Import option to load the locked PDF file. Enter the required password when prompted so the software can access the document.
Navigate to the security or permissions section within the software. Look for options such as Remove Protection or Unlock PDF.
Apply the changes and save the unlocked file to a secure location on your computer. Reopen the saved file to confirm that the restrictions have been removed.
Method 6: Unlock a PDF by Converting It to Another Format
This method works best for PDFs that allow viewing but restrict editing.
Open the locked PDF file in a browser or PDF reader that allows viewing. Use a trusted PDF converter tool to convert the file into another format, such as Word, text, or images.
Wait for the conversion process to complete and download the converted file. Open the converted file and verify that the content is accessible and editable.
If needed, convert the file back into PDF format using a PDF creator or converter.
Be aware that formatting and layout may change during conversion.
Method 7: Unlock a PDF Using Command Line Tools
This method is suitable for advanced users who are comfortable with technical tools.
Install a command-line PDF processing tool that supports removing restrictions. Open Command Prompt on Windows or Terminal on macOS or Linux.
Navigate to the folder containing the locked PDF file using directory commands. Enter the command required to remove the PDF restrictions, including the password if necessary.
Wait for the tool to process the file and generate an unlocked version. Open the output file and confirm that the PDF is now accessible without restrictions.
Faqs
Is it legal to unlock a PDF file?
Unlocking a PDF is legal if you own the document or have explicit permission from the owner. Unauthorized removal of security may violate copyright laws.
Can a PDF be unlocked without a password?
Some PDFs with weak restrictions can be unlocked using a browser or conversion methods. Strongly encrypted PDFs cannot be unlocked without the correct password.
Will unlocking affect the quality of the PDF?
Removing security does not affect quality. However, converting formats may slightly change the layout or formatting.
Are online PDF tools safe to use?
They are generally safe for non-sensitive files, but sensitive documents should be handled offline.
Final Thoughts
Unlocking a locked PDF file is often easier than it appears once you understand the type of restriction applied. Whether you use a browser, professional PDF software, desktop tools, or conversion methods, there is usually a practical solution available. Always ensure you have the legal right to unlock and use the document before removing any restrictions.
By following the detailed steps in this guide, you can safely regain access to your PDF files and work with them without unnecessary limitations.