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Detailed Guide on Crack PDF Password Online Software

Author: Andy Samue | 2024-01-05

“How do I go about cracking the password to a PDF file?”

This is the most common query on Reddit by users who have either forgotten the password to their PDF files, received password-protected PDFs or are simply looking to crack a locked PDF.

But you cannot just crack PDF password like that; you need a PDF cracker for it!

And that’s why, in this article, we will teach you how to crack a password protected PDF using 4 free PDF cracker tools.

Part 1: What Do You Need to Know Before You Crack a Password Protected PDF?

Before you attempt to unlock PDF without password, there are several precautions and considerations you should keep in mind.

Legal Implications

Before accessing the PDF file, it's important to make sure that you have the legal right to do so. Keep in mind that accessing someone else's data without permission is not only illegal, but it can also have serious consequences.

Use a Reliable PDF Password Unlocker

If you ever find yourself in a situation where you need to crack PDF password, make sure you only use reputable and legal password-cracking tools. Avoid using tools that may contain malware or be associated with illegal activities.

Create a Backup

Before you try cracking the password, always make sure to create a backup copy of the original file. This way, if anything goes wrong during the process, you can easily revert the file to its original state.

Now that you know what to keep in mind before cracking a password-protected PDF, let’s have a look at 4 of the best PDF password crack software.

Part 2: Best Crack PDF Password Online Software

Here are 4 of the top tools to crack PDF password:

1. PDF Crack

PDF Crack is an open-source software that can help you recover passwords from password-protected PDF files. It is really helpful in situations where you've forgotten the password and need to regain access to your important documents.

PDF Crack uses a brute-force attack method to try out different combinations of characters until it successfully decrypts the password protecting the PDF.


  • Easy command line options
  • Has a user-friendly interface


  • It only works with encrypted PDF files
  • Windows users may face some difficulties in using it as it was originally made for Linux

2. SmallPDF

SmallPDF is a PDF password cracker online free. It comes in handy to crack PDF password, modify PDFs, fill out forms, and make remarks. The best part is that SmallPDF does not require an account to use it.


  • You don’t need to register for an account to use it
  • It seamlessly helps crack PDF password online


  • It has a free trial of 7 days only
  • It does not edit PDFs

3. Guaranteed PDF Decrypter

Another top tool to crack PDF password online is Guaranteed PDF Decrypter or GuaPDF. It is a reliable tool for removing password protection and restrictions from PDF files. It boasts a near 100% success rate for standard PDF security, regardless of the password strength. The best part is that it is compatible with both older (40-bit) and newer (256-bit AES) encryption methods.


  • It doesn’t require installation and runs directly from a ZIP file
  • It cracks the password without altering its contents


  • It is a paid tool
  • It takes several days to decrypt a PDF

4. iLovePDF

If you’re looking for a simple and easy way for PDF file password crack online, we suggest giving iLovePDF a try. This web-based tool has a user-friendly interface and supports 25 different languages. It allows you to compress, merge, convert, split, and crack PDF password online.


  • Offer multi-language support
  • Has a mobile app
  • Best for beginners


  • It requires a stable internet connection to crack a locked PDF

  • It is not safe, as you need to upload your PDFsPros

Bonus Tips: Let Chat PDF Tool Ehance Your PDF Reading

Now that you know how to crack PDF with password, let us give you a bonus tip on how to make reading PDFs a breeze.

Say hello to Tenorshare AI - PDF Tool ! This amazing tool takes your PDF reading experience up a notch.

How, you ask? By summarizing the entire PDF and giving you the main idea of the document. This way, you get the gist of what the document is about without having to read the whole thing. How convenient is that?

Tenorshare AI - PDF Tool can also extract information from a specific part of a PDF without you having to scroll through it all manually. Plus, it has a super helpful AI chat feature powered by ChatGPT. So, if you have any questions about the PDF, just ask, and you'll get accurate answers in no time!

Some primary features of Tenorshare Chat PDF AI include:

  • Summarizing PDFs
  • Giving the central idea of the PDF
  • Answering PDF-related questions
  • Text interpretation for enhanced reading

How to Use Tenorshare AI - PDF Tool

Step 1: Visit the website and upload your PDF files.

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Step2: Create an account and log in.

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Step 3: Ask questions or request PDF summarization to analytical skills for ai and data science pdf.

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FAQs about Crack PDF Password

Q. How to crack a password protected PDF?

If you want to crack a password-protected PDF, you can do so by using several PDF password unlocker tools available online. Most of these tools are web-based and require you to upload your PDFs in order to decrypt them.

Q. What is the best free PDF Cracker?

In this guide, we have discussed 4 of the top PDF crackers. But which one is the best? If you ask us, we recommend using SmallPDF. Why? Because it is used by more than 6000 companies all over the world, which is proof that it is a safe, reliable, and flexible tool for commercial use.

Final Verdict

If you have password-protected a PDF file, there is always a chance of forgetting it. Therefore, if you want to access a locked PDF file, the best way to do so is by using a PDF cracker. In this article, we have discussed 4 of the best tools to crack PDF password. And to make things even more convenient, we have added a bonus section to make reading fun using Tenorshare AI - PDF Tool.

So, unlock your encrypted PDFs and take reading to the next level with the amazing tools mentioned in this guide.