Without a Password, Open a Password-Protected PDF File. You tried to access a PDF file on your computer only to discover that it is password-protected, and you don’t know (or can’t remember) the password? It’s really aggravating to lose access to a crucial PDF document. Don’t give up hope, though. We’ll show you how to open a password-protected PDF file without knowing the password in this article.
Method 1: Use the Owner Password to open a password-protected PDF file.
Document Open Password (also known as User Password) and Permissions Password are the two forms of passwords in PDF (also known as Owner Password). The former prevents unauthorized access to PDF files, while the latter is used to limit PDF editing, copying, and printing.
A PDF file can be opened with either a Document Open Password or a Permissions Password if it is protected by both. As a result, if you forget your Document Open Password but remember the Permissions Password, you can open your password-protected PDF file with ease using the Permissions Password.
If neither of the passwords are known, or if the PDF file is solely protected by a Document Open Password that you have forgotten, proceed to the next step.
Method 2: Use PDF Password Refixer to open a password-protected PDF.
There is no way around it if you don’t know (or forget) the password to open your password-protected PDF file. All you have to do now is use a PDF password recovery application like iSumsoft PDF Password Refixer to retrieve the password.
Why do we think iSumsoft PDF Password Refixer is a good idea? Is it truly effective?
Almost all third-party PDF password recovery software on the market employs brute-force attack technology, which involves going through all possible passwords one by one until the correct password is discovered. It’s possible that this will take a long time.
With four powerful and intelligent password recovery kinds, iSumsoft PDF Password Refixer was created. It is one of the most powerful and user-friendly PDF password recovery tools available, capable of recovering forgotten PDF passwords in the shortest period possible while preserving data.
Step 1: Get iSumsoft PDF Password Refixer and install it on your PC. Launch the software when it has been installed.
Step 2: In the upper left corner of the software screen, click Open or File > Open, then navigate to the password-protected PDF file and add it to the software.
Step 3: Under “Type of attack,” select one recovery kind from the drop-down box, and then tick or fill in the required elements for that type, such as password range, length, start and end characters, and so on.
Tip: The Dictionary and Mask attacks are designed for users who have forgotten their password but have a sketchy recollection of it.
Step 4: Finally, click Start to begin recovering your PDF password right away. Then just sit back and wait for the password to display.
Step 5: Once the password has been successfully recovered and displayed on the screen, click Copy, then Open.
Step 6: The default PDF reader (Microsoft Edge, Adobe Acrobat, or Adobe Reader, depending on the program you use to open PDF files) will launch. Click OK after pasting the password into the box. The password-protected PDF file will open successfully.
How do I erase the password from a PDF once it has been opened?
You may want to remove the password protection after opening the password protected PDF file so that you can open it without a password the next time. Removing the password also ensures that you don’t forget it again.
Step 1: Use Adobe Acrobat Pro to open the password-protected PDF file, then go to File > Properties.
Step 2: The Document Properties window appears. Choose No Security from the drop-down menu next to Security Method on the Security tab.
Step 3: Click OK to confirm when a warning popup appears. Then click OK once more.
Step 4: Finally, to save your modifications, press Ctrl + S. On the title bar of your PDF document, you’ll notice that the SECURED sign has been deleted. This indicates that the PDF is not password protected, and you can open it without one.