Can downloaded pdf book be locked?

Either you gain the password from the owner, or if forgotten, you need to remember the password. Our present topic is just for that purpose where we will explain the different free methods of opening password-protected PDF files.

As, a result of these solutions, you can gain access to the password-protected password PDF files. To get rid of the passwords from the protected PDF files, you can use several free methods, which are given here below:.

If the above methods to unlock protected pdf files do not produce the desired effects, i. It readily removes the password from the protected PDF file in a single click and creates a password-free PDF file at the specified destination folder location. So, there is no need to know the password earlier to remove it from the file making it helpful in situations where the password is forgotten or lost. PDF files are very commonly used and have many benefits for the users.

However, when you have a critical PDF file, and you do not have the password, that is a big problem; right? In our case, Adobe Acrobat was purchased solely to provide some degree of protection for their own format.

It is hard to believe that Adobe will let you prevent printing, prevent editing, prevent even opening without a password or you can really go all out and use a certificate for your encryption.

Yet they have no options to prevent saving at any point, anywhere. There are probably programs that are actually sold just to remove the DRM from Adobe documents and even if not, the point was that the client specified that no downloads be allowed even by users who had access to the private site.

Therefore the need to prevent the download to start with is not so hard to understand. Unless I can find a way to prevent opening, saving etc for a Flash File. Next, is it possible to password protect a Flash file from opening when clicked on?

I am not sure if I could post the code here or whether it is acceptable to paste links either but a Google search for "Maximus right click" will take you to it. And it was one of several examples, it just happened to be the one I could implement the easiest and worked better than the others.

Credit where credit is due. It seems to me that this is a place where there is an obvious need for a one-step packaged solution and usually "The Laws of Nature" take care of such an Imbalance in short order. Yet my research has taken me through many years of posters all asking for the same thing. If I find it, and it works, I'm buying it.

I wish I had skills as a programmer because I have some pretty good ideas of ways to implement such a product, unfortunately, I do not know how to put these ideas into practical use. You could also control printing from javascript on the client side. Although we should agree that ultimately you cannot prevent some form of document capture specially through screen capture technology either through phone or computer , the goal is to prevent direct download of original document.

Some suggest you turn it into images, but this is not necessary. There is clearly a way, as several cloud services allow you to share pdf files, removing the download option, without converting the PDF to images a superior method because it retains important properties like word search.

Personally, as a user of Outlook email, I use the cloud service it provides, OneDrive. I am no expert on HTMl so cannot tell you exactly how it is done, but it might still provide you some insights. Here is the code for one particular PDF I shared without private information and other bits that seemed unnecessary to me :. I suggest to modify pdf. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 10 years, 9 months ago. Active 1 year, 2 months ago. Viewed k times. I am thinking about converting those PDF files to Flash. Any other ideas?

Improve this question. JJJ 32k 20 20 gold badges 86 86 silver badges 99 99 bronze badges. Costa Costa 3, 11 11 gold badges 43 43 silver badges 77 77 bronze badges. You do know that anything you display to the user can be printed in some fashion or another If you serve it, they can find some way to use it. You can't stop a user from printing the screen. If you have information you want to display and you don't want it being printed physically, PDF isn't exactly the format of choice.

It's whole purpose is to be lovingly printed. In my business, the need for the PDF to not be downloaded is due to not wanting customers to be able to easily share downloaded materials with other people. I make worksheets, and if they are easy to share, the customer is more likely to email them to a friend. If sharing them is made more complicated, they are less likely to want to go to the trouble. Not being able to download them without having advanced computer knowledge is good enough for me.

Hope this sheds light on a need in the industry. By default all Signed PDF files are sealed with a randomized password so they cannot be modified.

Document encryption is governed by a back-end setting that success or support can change to a password of your choosing.

Contact your success manager or submit a support ticket with your request to install a known password for your account, and include the password you would like to apply letters and numbers only, no special characters.

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