How to use QR Code to open a password protected PDF file? How to use QR Code to protect a PDF file better? PDF QR Code for PDF Paid Subscription solution.

Dear Team,

Can I check if your company provides solution for locking/ unlocking the pdf files using QR code? If so, please share the details regarding this software.

Thanks.
Customer
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Thanks for your message, yes, we have a VeryPDF DocSafe QR Code solution for PDF files, we will name it as PDFSafe by QR Code.

>>Can you please let us know how the solution would work?

Thanks for your message, PDFSafe by QR Code solution will work by following steps,

* On the Server Side,
VeryPDF has an application which running on the server side, this server application will encrypt PDF files (user uploaded PDF files or the PDF files which imported by other methods), embed a unique FileID into each PDF file, encrypt each PDF file by a random password (OpenPassword), store the FileID and OpenPassword to the database on the server.

The encrypted PDF file can't be viewed without a valid OpenPassword, the OpenPassword is stored on the server and protected by server, the PDF file itself is protected by 256bit AES encryption algorithm, so it's impossible to decrypt this PDF file by a brute-force password recovery method. This PDF file is safe enough.

Server Application maintains a table for each user's permission and his Authenticator Key for QR Code Verification purpose.

* On the Client Side,
When a client want to open an encrypted PDF file using VeryPDF PDF Reader, VeryPDF PDF Reader will execute following works,

1. VeryPDF PDF Reader will read FileID from this PDF file first, display a QR Code image using this FileID and SystemID (or a unique ID for this device), and waiting for the response from server,

2. User will use a Mobile Authentication Application to scan this QR Code, Mobile Authentication Application will send the FileID+SystemID and User's Key to server,

3. Server Application will verify this user's identity by User's Key, if authentication successful (this user has permission to open this PDF file), Server Application will return the OpenPassword to client VeryPDF PDF Reader application, client PDF Reader will obtain OpenPassword and able to open & view this PDF file continue, if authentication failed (this user hasn't permission to open this PDF file), client VeryPDF PDF Reader application will show a "authentication failed" message to the user.

We are provide the PDF Reader applications for iOS (iPhone, iPad), Android, Windows, Mac systems.

Mobile Authentication Application need to be logged in, because each user has a unique Key.

VeryPDF PDF Reader needn't login function, it's just need to display a QR Code which contain the FileID+SystemID (or a unique ID for this device), and then waiting for the OpenPassword from server.

Server Application is used for authentication purpose and maintain FileID and OpenPasswords, it will return OpenPassword to client PDF Reader application if authentication successful.

VeryPDF has already finished a DocSafe product without QR Code authentication, you may test it from following web page,

http://drm.verypdf.com/online/

DocSafe Reader applications (for Web, iOS, iPhone, iPad, Android, Mac, Windows platforms) can be downloaded from this web page,

http://drm.verypdf.com/downloads/

If you are interest in this PDF QR Code solution, please feel free to let us know.

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Does pdfprint.exe remember settings from execution to execution?

Hi,

We are using pdfprint.exe executed from a server process that issues commands to a command line from a table. This process runs under a special windows (active directory) account that has domain admin privileges. Up to 15 different users submit print requests that are stored in a database table. Some of the requests are for duplex printing, some have multiple copies, some specify a tray. The server process takes these commands, formats the pdfprint.exe command line accordingly, then executes the command on the windows server.

What we are observing is "hangover" of settings from execution to execution of the command. For example:

Two different print job requests - two different pdf docs - all executed from same process with admin account,

a. Job 1 - specifies 2 copies of a doc called A1.pdf to print on printer name BCP01.

b. Job 2 - no copies specified (assumes default of 1) of a doc called A2.pdf to print on printer name BCP01.

Results:

Document A1 prints 2 copies on printer BCP01 - as expected
Document A2 prints 2 copies on printer BCP01 - PROBLEM ONLY ONE COPY IS EXPECTED

These results are not completely consistent.

Question 1: Does pdfprint.exe remember settings from execution to execution?

Question 2: How can we make it stop doing this?

Thank you.
Customer
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Thanks for your message, please refer to following options in pdfprint.exe application,

 -nochgprinter                    : don't change default printer during printing
-nochangeprintersettings         : don't change printer settings during printing

You may run following command line to try again,

pdfprint.exe -printermargins -nochgprinter -setcopyto -nochangeprintersettings D:\input.pdf

-nochgprinter will not change the default printer and -nochangeprintersettings will not remember the printing settings, we hope these options will work better for you,

VeryPDF

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Solution for locking PDF documents using QR code or Barcode

Dear Team,

Can I check if your company provides solution for locking / unlocking the pdf files using QR code? If so, please share the details regarding this software.

Thanks.
Customer
----------------------------------------

image
Thanks for your message, our company hasn't a solution for "locking/unlocking the PDF files using QR code" currently, however, our technologies for this solution are ready, so we can develop this solution for you easily.

For example, you may refer to following products on our web site,

VeryPDF Barcode Generator SDK,
http://www.verypdf.com/app/barcode/index.html

VeryPDF Barcode Recognition SDK,
http://www.verypdf.com/app/barcode/barcode-recognition.html

VeryPDF Encrypt PDF COM/SDK,
http://www.verypdf.com/app/encrypt-pdf/try-and-buy.html

PDF Password Remover COM,
http://www.verypdf.com/app/pdf-password-remover/try-and-buy.html

These products can be used to generate barcodes, read barcodes, encrypt PDF files and decrypt PDF files, you can also purchase these products to implement "locking/unlocking the PDF files using QR code" solution by yourself if you have a good developer.

VeryPDF

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How does Hookprinter intercept data which is sent to a printer? Does the print job passes through the hookprinter to be manipulated or does it simply sniffs raw data sent to the printer?

Dear Sir,

I am querying about the Hookprinter which intercept data which is sent to a printer. Can you please let me know how it works exactly please? Does the print job passes through the hookprinter to be manipulated or does it simply sniffs raw data sent to the printer?

Regards
Customer
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Thanks for your message, HookPrinter SDK will install a layer between printing application and spooling system (printer), such as,

Printing application -> HookPrinter -> Spooling System (Printer)

so, when you print a document to Windows Printer, the print job will be passed to HookPrinter first, HookPrinter can do anything to the print job, such as, analyze print job, convert print job to PDF, Image and other formats, and so on, after that, HookPrinter layer will forward the print job to original printer again, the printing process will continue.

Please notice, HookPrinter may not support all type of applications and printers, for example, if an application does control the printer without via Spooling System, HookPrinter will fail to support this type of application or printer.

VeryPDF has a docPrint Pro product, docPrint Pro product does support both "-hookprinter" and "-forwardprinter" two options. "-hookprinter" option will capture everything that you sent to any Windows Printer, it works 100% same as HookPrinter SDK product. However, if you just want to print a document to docPrint first, and then forward to other printers, you can use "-forwardprinter" option, for example,

"C:\Program Files (x86)\docPrint Pro v8.0\artprint.exe" -forwardprinter

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After you set the options, click "Save&Close" button to close the setting dialog, when an user print a document to docPrint, docPrint will process the print job first, and then redirect the print job to predefined printer (or associated printer) automatically.

"-hookprinter" and "-forwardprinter" are two total different printer capture and forwarding methods, you can choose either one according to your requirements.

VeryPDF

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Which product can be used to merge PDF files quickly?

Business Problem:

I have about 9000 pdfs each month that need to be combined into about 500 PDFs. Using adobe objects, I wrote a program in VBA (MS Access) to combine the PDFs but it is incredibly slow.

Do you have a product that can help me with this? I have all the paths to the files (source) that need to be combined and will provide destination path for the combined PDF. It needs to be combine the files at a very fast pace.

Customer
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Thanks for your message, we have following products which may help you to combine your PDF files quickly,

* 1. VeryPDF PDF Split-Merge Command Line software,

http://www.verypdf.com/app/pdf-split-merge/try-and-buy.html#buy-cmd
http://www.verypdf.com/pdfpg/pdfpg.exe

VeryPDF PDF Split-Merge Command Line software does support batch merging, you can use a .txt file to merge lots of PDF files into one PDF file at a time, please by following steps to try,

1. Please run following command line to create a .txt file which contain the filenames for all of your PDF files, one PDF filename per text line, include all folders recursively,

dir D:\pdf\*.pdf /s/b > D:\files.txt

Note: you can adjust the order for filenames in D:\files.txt by manual.

2. Please run following command line merge these PDF files into a PDF file,

"C:\Program Files\PDF Split-Merge v3.0\pdfpg.exe" D:\files.txt D:\out.pdf

The PDF Split-Merge Command Line application works better than GUI version if you wish merge 1000+ PDF files into one PDF file.

The pdfpg.exe application is located in the PDF Split-Merge installation folder.

* 2. Use "-mergepdf" option in HTML Converter Command Line (htmltools.exe) application,

http://www.verypdf.com/app/html-converter/try-and-buy.html#cmd
http://www.verypdf.com/htmltools/htmltools.zip

VeryPDF HTML Converter Command Line (htmltools.exe) has "-mergepdf" option, you can use this option to merge lots of PDF files into one PDF file quickly, you can download HTML Converter Command Line (htmltools.exe) from following web page to try,

http://www.verypdf.com/htmltools/index.html#dl
http://www.verypdf.com/htmltools/htmltools.zip

VeryPDF HTML Converter Command Line (htmltools.exe) software not only convert HTML files and web pages to PDF files, but also can split and merge PDF files, for example,

htmltools.exe  -burstpdf  "C:\201809.pdf"  "C:\out"
htmltools.exe  -mergepdf  "C:\001.pdf|C:\002.pdf|C:\003.pdf"  "C:\out.pdf"
htmltools.exe  -mergepdf  "C:\test\*.pdf"  "C:\out.pdf"

if your PDF file contains a password, you can deliver the password to htmltools.exe by "-openpwd" parameter,

htmltools.exe -mergepdf "D:\withpassword.pdf|D:\1.pdf" -openpwd "toto" D:\temp\out.pdf

If you wish to merge lots of PDF files (more than 1000 PDF files) into one PDF file from command line, please refer to following steps,

1. Please use following command line to get a txt file for all of your PDF files,

dir C:\mem2*.pdf /s/b > C:\file.txt

2. You can adjust the file's order in C:\file.txt file if necessary,

3. Please run following command line to do the batch merging.

htmltools.exe -mergepdf C:\file.txt C:\out.pdf

4. OK, you can merge all of these PDF files into one PDF file now.

htmltools.exe does split and merge your PDF files quickly, it can also compress the generated PDF files automatically during processing, we suggest you may download the free trial version from our website to try.

If you encounter any problem with above two products, please feel free to let us know, we are glad to assist you asap.

VeryPDF

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