PDF encrypted file decryption method (remove copy printing restrictions) -- Post

PDF encrypted file decryption method (remove copy printing restrictions)

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Many PDF files downloaded on the Internet now have security settings. The common security settings include: document printing is not allowed, document modification is not allowed, and content copying or extraction is not allowed. In practical use, we usually need to export a PDF file, save it as a DOC file (Word file), and copy, modify, and edit its content; or print such PDF files; or You cannot delete the watermark icon in the file. If you have any questions, please contact www.qqwhy.com.

The following describes how to solve the problem. Listen to me.

Computer cracking environment preparation: Adobe Acrobat 7.0 Professional software must be installed on the computer (remember not Adobe Reader !!), The size of the decompressed file is estimated to be more than 200 MB. This software is downloaded from many places on the network. If you are a company user, you can install it directly on the server. If you are prompted to upgrade, please cancel it. For the reason, I understand it.

1. How to crack the PDF file and remove all security settings so that those files cannot be cracked !!

Step 1: Download the PDF Password Remover software and install it. A registration code is required. I tested the software using version 3.0.

The software interface is as follows:

Step 2: Use the PDF Password Remover software to break the security Password of the PDF file;

Security of PDF files before cracking,

Cracking Process,

Security of PDF files after cracking,

I believe you are excited to see this step !!!

If your PDF file has no watermark settings or other issues, this step is basically enough, because this step can basically meet the basic features of your extraction and printing.

 

2. How to remove the watermark?

Currently, many PDF files with strong commercial taste generally like to set watermarks to mark copyrights or origins. If security settings are used together, printed files also contain watermarks, this seriously affects reading and advertisements are made to others free of charge. Since it is such a "rogue" behavior, there is no reason for us not to solve it. Are you right?

There are two methods to remove a watermark:

① Deleting method: Advantages: directly deleting a watermark is simple and easy to edit and process later. Disadvantages: Although PDF supports adding watermarks to each page in batches, it is a pity that the watermark must be deleted one page at a time. Some friends on the Internet also said that after the first page of the watermark is deleted, all the watermarks are deleted. This situation is not encountered in the PDF file I tested. It is estimated that it is the case of some files. I will not study it here. So far, I have learned that we have not been able to delete watermarks in batches. However, we will continue to understand the technical progress in this regard. We will tell you the news in a timely manner.

 

Procedure and method:

Open the PDF file for which you want to delete the watermark, view-Navigation tag-content-click on the page, find an XObject object, and delete it directly. Now you can see that the watermark is gone.

Before deleting an XObject, it carries a watermark:

After the XObject object is deleted, the watermark disappears:

 

② Replacement method: Advantages: The method is simple and easy to operate. Disadvantage: the watermark still exists. After testing, if it is only used to process PDF files and solve the watermark, this method can be used. If it is used to export the file to a doc file, it has been tested, the watermark problem still affects the extraction and editing of files.

Operation steps and methods: Document-Add a watermark and background, select the source from the file, and prepare a white image file (in jpg format ). Browse-after opening, check whether the watermark is missing. You can see it immediately in the preview window. Just make sure you are sure.

The files that need to be removed from the watermark are as follows:

Add watermark and background:

Use a white blank image file to replace the watermark background.

 

3. How to save the file as a doc?

In general, the security settings are removed, and the disallow is changed to allow. Generally, they can be saved as doc FILES smoothly. It is worth noting that, if the PDF file with a watermark must solve the watermark problem.

In addition, we would like to remind you that because the PDF file format and the doc file format are two completely different formats, multiple file formats can be converted into PDF files, that is, some files before forming a PDF file, it is not a doc file. You cannot edit such a file as needed even after it is successfully converted to a doc file. Therefore, the conclusion is that not all files can be directly converted into the doc files that you need to edit freely.

Common conversion methods:

① Another saving method: Save the opened PDF file as the selected doc file.

② Using the software conversion method: the most compatible and authoritative software is ScanSoft PDF Converter. I will not repeat it here. If you are interested, you can study it.

It is worth noting that the PDF file format is widely used on the network. Because its format can be well encrypted, the security level of file attributes is clearly classified and specific, it is much better than the commonly used doc file, and the compression ratio and compatibility are better than the doc file. Therefore, we recommend that you get used to the PDF format and be able to operate as easily as editing Doc files. How can I convert this file into a Word file if possible ?? Such problems.

Now, we will introduce the PDF file Cracking Method and hope it will help you.

The software mentioned above can be found and downloaded online.

Change the gif suffix to rar:

 

 

From http://earnba.blog.163.com/blog/static/68979575200911195622371/