[2024 New]What Is the Best PDF Password Cracker? Answer Here.

Jose Henline
January 18, 2024 Preview 20.6K Preview 3
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To prevent important PDF files from being opened, edited, copied and printed by unauthorized users, you usually set passwords for them. However, it can be bothersome if you lose or forget your PDF passwords when you want to deal with these encrypted PDF. Don’t worry, all hope is not lost! This post will bring you with several powerful PDF Password crackers, which help you to unlock the PDF and remove the annoying password permanently with few clicks.


Two Types of Passwords

Before diving into choosing an optimal PDF password cracker, you are supposed to find out which type of password was applied to your PDF file. This way, you’re more likely to match the best one below for your needs. 

There are mainly two types of passwords used to protect PDF files: user password and owner password. User password, also called open password, is used to prevent people from opening and viewing a PDF file. It restricts access to a PDF file unless you have the correct password. Meanwhile, owner password, known as permission password, allows the protected PDF to be opened normally, but restricts some operations such as editing, copying and printing.


Crack PDF User and Owner Password with Software

Multiple ways are available to crack PDF passwords, utilizing professional software, free software and even the third-party online tools. Considering the confidentiality of PDF documents, PDF password cracker software must be the top priority. 

One-Stop Solution: Crack All PDF Passwords Securely

Though thousands of PDF password crackers are listed in the search results, only a few can crack both user password and owner password successfully. Cisdem PDF Password Remover is one of them and ranks first. It is designed to remove all kinds of restrictions from PDF including file access, printing, changing the file, content copying or extraction, pages manipulation and form fields fill-in or signing. Moreover, even if you forget or lose the correct password, no matter how complex the password is, it helps users to crack all passwords by brute force.

Why Choose Cisdem PDF Password Remover?

  • Remove both user and owner password without a hitch.
  • Crack the user/owner password without entering the password.
  • No quality loss of original PDF files will happen after decryption.
  • Unlock hundreds of password-protected files at one time.
  • Show the estimated speed and remaining time for decryption.
  • Provide clues about the original password to accelerate the decryption.
  • Compatible with all versions of PDF files.


  • Don’t allow to retrieve forgotten or lost PDF passwords.

How to Crack PDF Owner/User Password with Cisdem Software?

  1. Download and install Cisdem PDF Password Remover from here.
    Free Download macOS 10.13 or later Free Download Windows 11/10/8/7
  2. Launch the program. Drag and drop all your password-protected PDF files into the upload interface. Encrypted PDF with user password will be marked with a lock icon.pdf password cracker cisdem01
  3. For owner-password-protected PDFs, all the restrictions will be removed easily once you click Remove.pdf password cracker cisdem02
  4. For user-password-protected PDFs, hit the red lock icon and enter the user password if you know. If not, click Forgot?. To reduce the decryption time, provide as many clues about the original password as you know. pdf password cracker cisdem04
  5. When the user password is entered or decrypted, click Remove to get an equivalent PDF without any restrictions.

Another PDF Password Cracker -- GuaPDF

GuaPDF (Guaranteed PDF Decrypter) is another software that can be used to crack user and owner passwords and remove them. It is built with a simple-to-use interface and even a computer novice can operate it in a breeze. 

However, the discouraging news is that this app can achieve the goal of cracking user passwords only if the protected PDF is old enough and employs 40-bit encryption. Worse still, the process will take 1-2 days on one modern desktop computer. And only one free process is allowed before purchasing its full version.
pdf password cracker gua01

Few Steps to Crack PDF Password 

  1. Run the program of GuaPDF, click File > Open to import the protected PDF file, or drag it into the workspace directly.pdf password cracker gua02
  2. The program will auto recognize the type of password used to the PDF. Continue with Yes.pdf password cracker gua03
  3. It starts analyzing and decrypting the PDF file. Save the decrypted PDF on your device when success is displayed in the work area.pdf password cracker gua04


Free Software to Crack Owner Password

Not surprisingly, paid software often offers more powerful features and better performance. But sometimes, some free applications can also meet your needs, for example, you only need to crack owner passwords, then such software as Free PDF Password Remover is a good option for the time being. 

It is absolutely costless and capable of cracking owner passwords in bulk. Also, it can remove user password from PDF files as long as you enter the password. The only limitation is that only 3 pages of each imported file can be exported after decryption.

Follow the Guide to Crack PDF Owner Password Free

  1. Open this free software. Click Add Files to upload your locked PDF files with owner password. Drag&drop doesn’t work here.pdf password cracker free01
  2. Choose a directory to save the exported files.
  3. Click Start to begin the cracking process, the program will skip the user-password-protected PDF and store the unlocked PDF files in the target location.pdf password cracker free02


Can We Crack PDF Password Online?

The answer is yes. We can indeed crack PDF passwords using online PDF crackers. But before doing this, you need to keep the following two tips in your mind:

  • Don’t import highly private PDF files to online free PDF crackers, because your files will be uploaded and stored by the 3rd-party online server for a while, which brings the risk of information leakage.
  • Don’t upload large PDF files, especially your Internet connection is not that good. This may slow down or even pause the cracking process.

Here we found two online PDF password crackers, both of which are completely free and crack PDF passwords fast.

Crack User Password with LostMyPass

Unlike most online PDF crackers, LostMyPass can not only remove owner password quickly but also crack and remove PDF user password. Depending on the complexity of the password, it provides three different password recovery modes: Weak, Strong and Brute Force. Only the Weak mode is free but gives little chance of success when cracking a user password. Besides, batch processing is not supported and the file uploaded is up to 100 MB.

How to Crack PDF User Password with LostMyPass?

  • Step 1. Go to https://www.lostmypass.com/ and try it now.
  • Step 2. Upload your encrypted PDF with a user password by drag&drop or clicking the button.pdf password cracker online01
  • Step 3. Choose I DON’T KNOW THE PASSWORD....pdf password cracker online02
  • Step 4. A progress bar shows the remaining time of cracking PDF password. Once finished, download unlocked PDF file on your device.pdf password cracker online03

Crack Only Owner Password with Online2PDF 

Another one is Online2PDF. As a matter fact, it is a PDF tool dedicated to converting PDF and other popular file formats, together with the ability to edit, merge, compress and unlock PDF. This online tool can aid users to crack owner password fast and without failure. Plus, multiple protected files (up to 20 files) can be unlocked in one go. Yet, it is unable to crack forgotten or lost user passwords and requires the user password to remove it from PDF.

How to Crack PDF Owner Password Online Free?

  • Step 1. Go to its website https://online2pdf.com/.
  • Step 2. Click Select files to input your owner-password-protected PDF files into the service.pdf password cracker online03
  • Step 3. Choose your desired option from Mode and convert to drop-down menu. Go ahead with Convert.pdf password cracker online05
  • Step 4. The file download will be started immediately once the cracking task is finished.


Choose the Best One from 5 PDF Crackers

Till now, we have already introduced 5 different PDF password crackers. To help you choose the best among them, we’ve summarized their features in a comprehensive table. 

PDF Crackers Cisdem PDF Password Remover GuaPDF Free PDF Password Remover LostMyPass Online2PDF
Supported OS Mac and Windows Mac and Windows Mac and Windows Online Online
Crack Owner PW Yes Yes Yes Yes Yes
Crack Forgotten User PW Yes Only old PDF with 40-bit encryption No Weak user password No
Remove PW Yes Yes Yes Yes Yes
Batch Crack Yes No Yes No Yes

Crack Speed

Fast 1-2 days to crack user PW Medium Medium Fast

Basing on the table, we can conclude that Cisdem PDF Password Remover is the only one allowing to batch crack owner passwords and user passwords in one program. What’s more, the cracking process comes with a fast speed and high success rate.              

Jose Henline
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Jose specializes in reviews, how-to guides, top lists, etc. on PDF, data recovery and multi-media. On his spare time, he likes to travel or challenge some extreme sports.

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Comments (3) Leave a Reply

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  • Aaron

    I am being stupid to set a long password for my PDF, now I have to crack the protection, I like Cisdem.

    7 years ago commonReply

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  • Todd

    Cisdem PDFPasswordRemover for Mac is a great tool, at least for me. It removed password from my PDF, Now, I can edit and print it.

    8 years ago commonReply

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  • Eugene

    Cisdem PasswordRemover seems better than others, I will try it.

    8 years ago commonReply

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Home > [2024 New]What Is the Best PDF Password Cracker? Answer Here.