How to encrypt a pdf file. How to protect a PDF document or file from copying, editing and printing? How to make a secure PDF file

Selecting a file to protect

Select the sensitive file you want to protect and drag it into the appropriate field. You can also upload the file from your computer or from cloud storage, such as Google Drive or Dropbox.

Selecting a password

Enter a password to protect your file and confirm it. Make sure you remember your password or save it in a safe place before confirming it. We do not impose any restrictions on the password format, but the longer and more complex password, the more reliable it is.

View and download a file

Once the password is set, you can download the protected file to your computer and view it in your browser. You can also send by email. email a link to your file; this link will be valid for 24 hours.

DID YOU KNOW?

Higher level of encryption provides higher level of protection

There are different levels and types of encryption. The strongest and most secure level of PDF encryption is the 256-bit AES (Advanced Encryption Standard) encryption algorithm, which has never been cracked! This ensures that your file is under best protection– before you forget your password. The PDF format previously allowed 128-bit AES encryption, but this option is no longer supported in latest version PDF 2.0 standard.

More information about password protecting PDF files

Full file protection

Password protect your PDF file from prying eyes! Our online password protection tool prevents anyone from opening your file and accessing its contents without knowing the password. Simply select the file to protect and then provide your password.

Removing password protection

You can only unprotect a password-protected PDF file by using the original password with which it was protected. If you have the appropriate password, you can use our free online password removal tool to remove the password protection of the file. So don't forget your password or keep unprotected files in a safe place.

Permission restrictions

Take control of permissions, including the ability to edit, print, and copy a document. Use the PDF protection tool from our complete tool to limit access to these features while still allowing the file to be opened.

We all quite often use documents in PDF format. This is due to its functionality and convenience. However, each of us may encounter the need to remove protection from a PDF file. This may be needed for various reasons, for example, in order to print text, edit a file, open it in a non-standard way via Photoshop, convert from of this format in another to allow the file to be read by another device, and so on.

The reason for this need is absolutely unimportant. The main thing is that if the PDF file is protected, you will not be able to do all of the above. Therefore, our task today is to find out and understand how not to become a hostage to this situation. So, how do you remove protection from a PDF file? Below I will talk about several ways that allow you to do this. However, all of them can only remove the password from these documents. You won't be able to find out exactly what it was, but after that you can do whatever you want with the file.

If you look for programs that remove protection from PDF files through search engines, the vast majority of them will be paid. But I still managed to find several working methods that did not cost me anything. It is these that I will now share with you, which will save you from the dreary search for a solution.

Online services

Let's start with online services, thanks to which the protection of PDF files can be easily removed. Advantage this method is that you will not need to download software to your hard drive, and then install the software with all the ensuing consequences. After all, I’m absolutely sure that you don’t often wonder how to remove protection from a PDF file? As a rule, such a need arises a couple of times in life.

How to do this?

Using your browser, go to www.freemypdf.com. This resource quite old, but throughout its existence it has proven itself quite well. It not only allows you to remove the password, but also removes restrictions such as protecting PDF files from copying, printing, and the like. However, if your file initially asks for a password even just to open it, then this service can't help you in any way.

So, I’ll tell you how to remove protection from a PDF file using this online service. We go to the site, then click on the file selection button. Next, you need to specify the path to the file that needs to be unlocked. Remember that the size of such a document should not exceed one hundred and fifty megabytes. Otherwise, this method will not help you. When the file is specified, click on the button called "Do it!" We're waiting for a while. After this, you can download the required document without a password and in decrypted form.

Second way

The second way to get rid of your password is www.pdfunlock.com. It works on the same principle as described above. Drag and drop your document password protected, directly into the window of this site. If the file was on your hard drive, click the “My Computer” button. If you find it in, click on the “Google Drive” or “Drop Box” button. Next, you need to click on the “Unblock” button and wait for the unprotection process to complete.

Free software

Now it's time to learn how to remove protection from a PDF file using free software. Let's start with the first program, which is called "PDF Password Remover Tool". Download it from the developer's website. Just do not confuse this software with a similar one called "PDF Password Remover". Latest program does everything the first one does, but costs twenty-nine US dollars.

How to use?

How to use this miracle? And everything is very simple. Even a schoolchild can understand the interface of this software. We find a field called “Open PDF file”, and in it we indicate the document that needs to be “neutralized”. Next, go to the field called “Save PDF file”, where you need to specify the name under which it will be saved new document no longer protected. Find the "Convert" button and wait for the process to complete. This software is able to cope with many passwords, so, as a rule, there is no need to look for any other solutions to this problem.

Let's move on. I present to your attention the following program that will allow you to unlock a protected document. It's called " Free PDF Unlocker", and you can also download it from the developer’s website. It is quite simple and allows you not only to get rid of the password, but also to remove any prohibitions and restrictions on PDF files. This is both print protection and copy protection. It does not pose any difficulties and ban on opening files. It easily overcomes this obstacle. However, it is not always able to cope with some new documents that have enhanced protection.

Paid software

All of the above is usually enough to remove the password. These methods are quite simple and do not require any material investments. But if for some reason none of the above methods solved your problem, and the PDF document still has a password, try using another program called "Very PDF Password Remover". You can download it, like all previous ones, on the developer’s website.

The full version of this software costs one thousand Russian rubles, however trial version It won't cost you anything. You can easily understand its interface, and it will certainly do everything you need. The program copes with any difficulties that relate to the PDF format.

There is also a sea of ​​similar software, usually paid, which I don’t see the need to use, because, as you can see, there is enough paid programs solving the problem that has arisen. If you still decide to use a paid software, then the best of possible options I also suggested it to you.

I will end here, since I told you everything I wanted. All of the above methods definitely work, since I have personally tested them more than once. I hope I saved you from wasting time looking for a solution to this actual problem on Internet resources, as well as thematic forums.

The article tells how to install protection on PDF document s.

Many users are concerned about the security of information stored on their computers. There are many ways to encrypt files, folders and disks in order to strangers could not view your photos, videos, text documents.

Today we will talk about how to protect PDF documents from copying, printing and editing. We will learn how to block access to all our information that is stored in PDF file Oh:

  • When creating them
  • After their creation

How to protect PDF documents from printing, copying and editing?

So, you can protect PDF documents both during their creation and after. In the first case, we can use the free program " PDFCreator". You can download it from this link.

  • When you create any text document, for example, in a notepad, click on it right click mice. Will open context menu, in which there will be an item for converting documents to PDF files, as shown in the screenshot.

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • After clicking on this item, a program window will open. Click on " Settings", then to " Format" And " Safety" As a result, you will be able to set a password on the created file at your discretion, as well as prohibit copying or printing.

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

But most often, users need to protect PDF documents after they have already been created. To do this, you can use other programs, as well as online services. In the second case, you can use this one website.

  • Go to the website and click in the left column on the item “ Encrypt PDF»

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • Next, a window will open in which you can upload your document to the site via the “ Review»

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • Next, scroll down the page, you will see the settings in which order you need to protect your document. In principle, these will be the same settings as in the previous program. You can see this in the screenshot; here you can prohibit printing a document or copying text from it, as well as setting passwords. Make the settings as you need them and click on the " Protect».

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

After this, the system will give you a link from where you can download a protected PDF file. But here, of course, there are also disadvantages. Firstly, this method requires the Internet, and secondly, the information from your file may be available to the owners of this site. Therefore, this method can be used if you do not encrypt very well important information and always have access to the Internet.

Now let's talk about programs. To begin with, we suggest “ Vinsoft LockPDF" (download ). It's very easy to use. Download and install the program. After this, two windows will open: for downloading the file and for saving it. On the left side of the window, click on the button “ To the castle", on the right - to " Close PDF file":

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

This program has one downside. Once you protect a document, even you won’t be able to print it yourself. You will have to use other programs to print. If that doesn't suit you, then let's talk about next program to protect PDF files.

  • Download and install the program " PDF Blender» according to this link

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • Run it

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • Now select the PDF file you need, first open it and check that it is not password protected.

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • Add it to the program

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • Next, go to the point shown in the screenshot

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • Select encryption type

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • Set a password with which you will open this file and save the settings

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • After this, you can come up with a name for the protected document and designate a storage location on your computer. Next, click on “ Blend».

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • That's all, the protection is set. Now, when you open your PDF document, a window like this will appear on the screen.

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • This matter has been sorted out. We have set a password to open the file. Now let's try to protect copying and printing. Follow this path again.

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

  • Next, set the settings exactly as shown in the screenshot (come up with a password yourself). After this, your PDF document will be protected from copying and printing.

How to protect a PDF document, file from copying, editing and printing How to make a protected PDF file

Protect pdf files from printing, copying and editing is a fairly productive method of preserving your works, as well as effective method protect yourself from unscrupulous customers.

Many popular programs(AutoCAD, Word, Excel, etc.) used in preparing documentation have a built-in virtual printer, which allows you to prepare a document for printing and save it as a pdf file.

PDF files are universal format, which allows you to print a document on most devices without any programs, and there are also many free programs for view pdf files. Thus, by saving the documentation in pdf files, the customer will not have to install various programs for each file type.

Protecting pdf documents from printing and copying

Let's consider a case where you need to protect already existing files pdf from printing and copying. I assume you have no desire to spend money on purchasing paid programs, so we will traditionally use free legal software using the example of PDF Blender, which, in addition to protection, can combine several files into one.

First of all, let's install PDF Blender in order to protect the pdf document.

1. Download the archive with prepared distributions for free by clicking.

Information that the program is distributed free of charge and installation instructions can be found on the developer's page.

2. Unpack the archive and install gs912w32.exe Ghostscript according to the instructions from the developer's website.

I haven’t delved into what Ghostscript is and what it’s for, but you can read it and download it if you wish. latest version. Please note that you need a Windows distribution (32 bit).

3. Launch PDFBlenderSetup1.1.2.exe and install PDF Blender in the standard way.

4. Open PDFBlender and go to the window Preferences by pressing the Alt+Enter key combination or selecting File → Preferences from the menu.

5. In the field Path to gswin32c.exe: by clicking on Browse… indicate the corresponding file located C:\Program Files (x86)\gs\gs9.12\bin\gswin32c.exe or something similar and click Save.

This is the installation and presets completed.

A program to protect a pdf file with a password. How to use

1. Launch the program and drag necessary files in the field Source or add by clicking on the button Add Files...

3. Keyboard shortcut Ctrl+S or in top menu File → Document Security open the window of the same name.

4. In the field Select specify the encryption type 40-bit (Acrobat 3.xorgreater).

5. In the field Open a password is set to open the file. I recommend it for more protection.

6. In the field Permissions a password is set to restrict actions with the document, marked with checkboxes below.

7. Close the window by pressing Save, and finish pdf protection at the touch of a button Blend.

Note. The file will open when you enter any of the passwords. If you have set a password only to restrict printing, copying and pdf editing file, the file will open without a password, and the corresponding buttons will not be active.

Merge pdf free

Once again, I draw your attention to the fact that the PDFBlender program will allow you to combine several pdf files in one. To merge, add your files, edit the order using the buttons Move Up And Move Down and specify the name of the new file.

There is also alternative option- take advantage online service Free PDF tools located

1. Upload the PDF file by clicking on the button Review…

2. Set passwords to open and restrict printing and copying. Once again, please note that the file will be opened with any of the two passwords.

Note. Do not check the boxes, otherwise this action will allow printing, copying and editing pdf document.

3. After clicking the button Protect you will be prompted to download the encrypted file.

This resource will also help you split or combine PDF files.

Protect PDF files using PDFCreator

If you are only creating a pdf file from documents various formats, then it will be more convenient to use free program PDFCreator.

Due to the cumbersomeness of the article, the description of working with PDFCreator had to be included in a separate lesson, which you can find by clicking.

How to protect pdf. Video tutorial

I'll write it down as soon as it's available free time, perhaps your comments will speed up...

Sandbox

knight with gun May 27, 2014 at 07:11 pm

Bypass copy protection in a pdf file

Since January of this year, I finally switched to Linux OS, and specifically to Ubuntu. I am a third-year student majoring in Computer Science and Computer Science. In the third year there is such an interesting subject - circuit design. And there is also information about them laboratory work which we can do at home and send to the teacher by e-mail. Since the teacher can use the old Microsoft version Office, but I work in LibreOffice, errors may occur when opening odt on Microsoft Office, or when saving doc\docx in LibreOffice. I decided to save the work as a pdf file and send it to the teacher. In addition, he posts completed laboratory works on his website so that any student can familiarize himself with other works. Unfortunately, I have a negative trait - I don’t like people copying my text. I decided to protect the document from copying, I more precisely set a ban on copying and set a password.

In order to make sure that the document was created normally and protected from copying, I tried opening it in standard program view the pdf that is installed in Ubuntu - namely Evince. What a surprise I was when I discovered that the text could be easily copied. “Well, I saved it wrong,” I thought, and did the same steps again. I opened it a second time and again the text was easily copied.

Well, I was quite surprised and decided to send this pdf file to a friend. He said that he could not copy the text in any Foxit Reader, neither in Adobe Reader.

Well, the next completely logical step on my part - I asked him to download Evince. Good product with open source code and cross-platform. There were no problems with installation on Windows OS. My friend opened a protected pdf using a freshly installed Evince and was able to copy the text without any problems.

Conclusion: to bypass protection from copy pdf you can use the Evince program. This option is the most optimal and does not require any additional actions and is the most convenient option. In my opinion, of course.

I didn’t stop there, because perhaps the problem is in LibreOffice itself, you might think. I downloaded the trial Adobe Acrobat Pro and created a pdf file there and protected it with a password.

I got similar results, Evince did the job without any problems.

Tags: pdf, Evince

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