Password Recovery Blog

An easy way to recover ZIP password

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Wanna recover ZIP password? Have you met such a case:when opening a ZIP file, you are request to input a password, and you forget the password? In stead of racking your brains to recall, why not try CrackPDF ZIP Password Recovery to remove the restriction from protected ZIP files?

CrackPDF ZIP Password Recovery is a professional decryption tool designed to help users get back forgotten ZIP passwords if you forgot or lost the passwords of ZIP/WinZIP/PKZIP files.This tool provides three methods to recover ZIP password. If you remember a little bit about the forgotten password, you can try the customizable brute-force attack.However, if you remember nothing about the lost password you can try the dictionary attack or the brute force attack with trying all combinations.With the help of CrackPDF ZIP Password Recovery, you can get access to the password protected ZIP files again.

If you are blank about the password, let’s see how to use CrackPDF ZIP Password Recovery to recover the lost ZIP password.

Step 1. Download and install CrackPDF ZIP Password Recovery into your computer.

Step 2.Add the password protected ZIP files. You can click Open or Open File to add the ZIP files.

Step 3. Choose a type of attack on the option panel. Since there is no clues about the password, you may skip the customizable brute-force attack. To save time, you can try the dictionary-based attack before trying the brute force attack with trying all the combinations.Please do as follows:

Click the third radio box on the Recovery tab control > click the Dictionary tab> select options in the Dictionary tab control.

If the dictionary-based attack still could not find the forgotten ZIP password back, then you may try the brute force attack with trying all the combinations.Switch  back to the first radio box on the Recovery tab control> click the Brute-force with Mask Attack (Trying All Possible Combinations) tab.

Step 4.Click Start button to start the process.

If you meet any problems when using CrackPDF ZIP Password Recovery to recover  ZIP passwords, please do not hesitate let us know. Our support e-mail is support@crackpdf.com

Download CrackPDF ZIP Password Recovery

Password Recovery Blog

3 useful tools to remove PDF password

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In this article, it will introduce 3 tools to remove PDF password. In fact, the 3 tools are three different versions of PDF Password Cracker. PDF Password Cracker is a powerful utility that can crack PDF password.

The three versions are PDF Password Cracker Standard (Std), PDF Password Cracker Professional (Pro) and PDF Password Cracker Enterprise (Ent). Now let’s see it one by one.

PDF Password Cracker Standard (Std) is able to remove basic restrictions on PDF documents. Compared with the other two, its functions are limited. It can be used to decrypt owner password protected PDF files. After the decryption, you can feel free to edit, copy and print the PDF files.

In comparison with, PDF Password Cracker Professional (Pro) adds the following two great functions.(Of course, it contains all functions in the Standard version)

a. It supports to search for owner password and user password with brute-force and dictionary attacks.

b. It adds “Key search attack” function that guarantees the decryption of PDF files using 40-bit encryption.

Based on the professional version, PDF Password Cracker Enterprise (Ent) is able to remove more security options from encrypted PDF files such as metadata, javascript actions, embedded thumbnails, all comments, embedded file, bookmarks, private data, named destination,all form actions, digital signatures, etc. What’s more, it can also recompress data streams.

All the 3 PDF Password Cracker tools can remove PDF password and decrypt PDF files if open password is known.And they all support All version of PDF files, 40-bit RC4 encryption, 128-bit RC4 encryption  and AES encryption.

However, only the professional  and enterprise versions support brute-force attack  and dictionary attack on open password.And only the enterprise version can remove metadata, javascript actions, embedded thumbnails, comments, bookmarks, digital signatures, etc, and recompress data streams.

All the three tools are extremely easy to use. All you need to do is to add the password protected PDF files and a few clicks, then the software will crack PDF password automatically.

If you want to know more about how to use PDF Password Cracker Standard (Std), PDF Password Cracker Professional (Pro) or PDF Password Cracker Enterprise (Ent) to remove PDF password, please email us via support@crackpdf.com or directly post a comment below, we will reply you as soon as possible. If you have any good suggestions, you can also state it below or contact us via the above email.

Password Recovery Blog

How to unlock password protected PDF file?

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Wanna unlock password protected PDF file? PDF Password Cracker Enterprise is a professional PDF password cracker which can easily and efficiently crack PDF password,  including owner password that protect PDF from being modified, copied, printed, etc, and open password that protect PDF from being opened and viewed.

In the following,it will tell you how to remove PDF password step by step. Here we go.

Step 1. Click here to download PDF Password Cracker Enterprise and install it on your computer.

Step 2. Open PDF Password Cracker Enterprise and add password protected PDF  into it by clicking Load button. You can also input the directory into the box besides Load button to add the encrypted PDF files.

Step 3. Choose a type of attack from “Type of attack” drop-down box. Brute-force type is used when you remember something about the password such as the length of the password, special characters, etc. If you want to crack PDF password by dictionary, please choose Dictionary way. If you remember nothing about the password, then you can try the last way-Key search.

If you choose Brute-force, you can set the following parameters.

  • All caps latin (A-Z): refers to ABCDEFGHIJKLMNOPQRSTUVWXYZ
  • All small latin (a-z): refers to abcdefghjiklmnopqrstuvwxyz
  • All digits (0-9): refers to 0123456789
  • All special symbols (!@…): such as `~!@#$%^&*()-_=+\|,./<>?;:'”[]{}
  • Space: Space character
  • All printable: refers to all printable characters such as ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghjiklmnopqrstuvwxyz0123456789 `~!@#$%^&*()-_=+\|,./<>?;:'”[]{}
  • User defined characters: User defined characters for construct passwords
  • Minimal password length: Minimal length for passwords
  • Maximal password length: Maximal length for passwords
  • Start from: First password to be tried.
  • End at: Last password to be tried.

If you choose Dictionary, the parameter is relatively less.

  • Dictionary file path: add a dictionary file for dictionary attack.
  • Try all possible upper/lower case combinations: automatically construct passwords from dictionary file.

Step 4. Start to remove PDF password. You can click Start or Decrypt button on the interface. Then the application will automatically try all the possible passwords to find the PDF password.

For more information on how to unlock password protected PDF with PDF Password Cracker Enterprise, you can directly leave your comments below or email support@crackpdf.com.

Password Recovery Blog

Remove PDF password in an easy way

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Wanna remove PDF password in an easy way? PDF Password Cracker Pro is a professional PDF password remover that can easily crack password of PDF documents.

In terms of PDF, there are two kinds of passwords. One is owner password and the other is user password. Owner password is used to prevent PDF files from printing, editing, selecting and copying text and graphics into Clipboard, or adding annotations and form fields. User password is used to lock the file to prevent others opening or viewing the PDF files.

Why choose PDF Password Cracker Pro to remove PDF password?

  • Easy to use
  • Support Windows 98, ME, NT, 2000, XP, 2003, Vista operating systems.
  • Instantly decrypt PDF files with owner password.
  • Recover user password using Brute-Force or Dictionary attack.
  • Support non-English characters in passwords.
  • Support PDF files with 40-bit RC4 decryption, 128-bit RC4 decryption, AES decryption, compressed files and un-encrypted meta data.
  • Support “Key Search” attack that allows to decrypt PDF files with 40-bit security regardless the password length.

Tutorial: How to use it to remove PDF passwords?

  • Firstly, download PDF Password Cracker Pro and install it.
  • Secondly, click Load button to locate the protected PDF file, then click Open button.
  • Thirdly, click Decrypt button or Start button, then PDF Password Cracker Pro will test the passwords automatically.

Once PDF Password Cracker Pro retrieved the user password, a “Save As” dialog window will pop up, you may save the decrypted PDF files as normal PDF files directly.

That’s it! So easy, right？As you can see, the process to remove password from PDF files is very simple. So why are you hesitating? Go for this method to crack PDF password NOW!

If you want to know more about how to remove PDF password with PDF Password Cracker Pro, or if you have any questions or suggestions, you can post your doubts or opinions below or send them to support@crackpdf.com.

Password Recovery Blog

How to crack PDF password?

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Cannot modify, copy, or print your PDF document because the PDF files are protected by password and you cannot remember it? What will you do? In this article, it will show you an easy way to crack PDF password.

If you cannot edit, copy or print PDF files, the the PDF may be protected by owner password. The so-called owner password are password used to protect the PDF files from editing, printing, selecting text and graphics and copying them into the Clipboard, or adding annotations and form fields, etc. To crack PDF password, you need a small tool－PDF Password Cracker. PDF Password Cracker is a powerful application that can can be used to decrypt owner-password-protected PDF documents automatically.

However, what should we do to crack PDF password with PDF Password Cracker? The following will show you simple way:

1. Add the owner-password-protected PDF files singly or in batches with opened GUI interface of PDF Password Cracker.

  • Click Open PDF(s)> select PDF files which you would like to remove the passwords in pop dialog box> click Open;
  • Or directly drag PDF files from one folder and drop PDF files into it.

2. Enter a name for the new PDF file.

NOTE: You cannot use the original name of the PDF file, you must change it.

3. Click the "Save" button.

4. It will display with the status of the password removal. It should say "Succeed", Right-click on the entry, the you can view the document.

  • View Source Document: View the original PDF document.
  • View Target Document: View the decrypted PDF document.
  • Delete “ERROR” Items: Delete the PDF files that are not encrypted.
  • Delete “SUCCED”Items: Delete the PDF files of which password have been successfully removed. 
  • Delete Selected Items: Delete selected items from the list.
  • Delete All Items: Delete all items from the list.

Here is the end of this article about using PDF Password Cracker to ccrack PDF password. And for your concerns about this application and this article, please contact support@crackpdf.com or add your comments here.