Removing restrictions from pdf files

Can easily remove both user password as well as owner password. Restrictions related to copying content from PDF files, the printing of PDF files, editing of PDF files, page extraction, commenting, document modification, document assembling, etc.

Can be easily removed. Allows modification of Metadata and other information. Provides preview option along with saving data mode. Conclusion: Many of us use PDF files on a daily basis for information exchange and face this issue that the PDF files are password protected or encrypted. Social Presence Get updated news about the products. The challenges users can face with this method is the method can only be used to decrypt only small size PDF files. This method is an exceptional approach.

In the above descriptive blog, we have articulated the methods to remove PDF document restrictions. The blog initiates two types of methods to acknowledge the same: manual as well as third party solution. For large no.

I hope you find these techniques insightful. Spiceworks General Support. Last Updated: Jan 05, 2 Minute Read. Reply 0. Facebook Twitter Reddit LinkedIn. As you will not be able to import it as a. NET reference, you will need to apply the [DllExport] directive to reference the external functions.

Since Ghostscript is open source, you can access the source code to learn how you can best use the API or you can read the documentation that is available on the Ghostscript website with some notes below. Here is a C class that wraps the API. The code is from WiBit. All this code is doing is accepting a similar set of parameters from the client code, in a similar way as the batch file does above.

The beauty of this is that you are not spawning a separate process when you launch the conversion. In order to implement this code in C , all you need to do is create an instance and pass it the parameters, similar to what we did in the batch file example above:. This function creates a pointer to a memory location that contains the Ghostscript instance to use.

This is unique with each usage of this C Class and it is stored in the unmanaged portion of memory. You can sort of look at this as the equivalent of executing gswin64c in the batch file example above. Just like the command line example, we need to pass the Ghostscript API the parameters to control what it does and how it does it. This is expected to be stored in a Collection ArrayList and it is inserted into this class using one of the constructors or the AddParam methods.

This can be compared to the list of parameters that are passed to gswin64c in the batch file example above.

This removed the GhostScript instance from memory.