#495 Merging PDFs

[Tracy Smith]

Ben, I appreciate the work you've put into slicing and merging files, it's made NAPS2 useful in several areas for me. However, there's still one challenge that is less than fully usable. I have a Court application that combines Juror questionnaires into a collective PDF to give to attorneys. I've used Acrobat Interop to accomplish this in the past but have moved much of the scanning functionality to NAPS2. However looping through and consolidating 200 questionnaires into a single PDF takes seconds in Acrobat but many minutes (and lots of temp files I've noticed) in NAPS2. My guess is Acrobat is somehow able to keep the file in memory as it's being built whereas you're processing and creating a single file at a time and rewriting the file to disk on every single increment within the 200 files it's looping through. Any thoughts?

[Tracy Smith]

Sorry for my ignorance.how do I install this? I tried copying it over my
existing install and it didn't seem to work.

From: Ben Olden-Cooligan ben-cyanfish@users.sourceforge.net
Sent: Monday, September 24, 2018 11:57 AM
To: [naps2:tickets] 495@tickets.naps2.p.re.sourceforge.net
Subject: [naps2:tickets] #495 Merging PDFs

I very recently made an optimization that might help. Try the attached test
version and see if it makes any difference.

Attachments:

• naps2-6.0.2-test_server-portable.zip
  https://sourceforge.net/p/naps2/tickets/_discuss/thread/cfe905354d/a99e/att achment/naps2-6.0.2-test_server-portable.zip (3.0 MB;
  application/x-zip-compressed)

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[tickets:#495] https://sourceforge.net/p/naps2/tickets/495/ Merging PDFs

Status: open
Milestone: 5.X
Created: Mon Sep 24, 2018 03:14 PM UTC by Tracy Smith
Last Updated: Mon Sep 24, 2018 03:14 PM UTC
Owner: Ben Olden-Cooligan

Ben, I appreciate the work you've put into slicing and merging files, it's
made NAPS2 useful in several areas for me. However, there's still one
challenge that is less than fully usable. I have a Court application that
combines Juror questionnaires into a collective PDF to give to attorneys.
I've used Acrobat Interop to accomplish this in the past but have moved much
of the scanning functionality to NAPS2. However looping through and
consolidating 200 questionnaires into a single PDF takes seconds in Acrobat
but many minutes (and lots of temp files I've noticed) in NAPS2. My guess is
Acrobat is somehow able to keep the file in memory as it's being built
whereas you're processing and creating a single file at a time and rewriting
the file to disk on every single increment within the 200 files it's looping
through. Any thoughts?

---

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[Tracy Smith]

This was a definite improvement.

I ran a test to compile 30 single page questionnaires into one PDF.

Acrobat - 2 seconds

Improved NAPS2 - 29 seconds

Current NAPS2 - 379 seconds!!

How do I best get an installable version of the improved version?

From: Ben Olden-Cooligan ben-cyanfish@users.sourceforge.net
Sent: Monday, September 24, 2018 12:47 PM
To: [naps2:tickets] 495@tickets.naps2.p.re.sourceforge.net
Subject: [naps2:tickets] #495 Merging PDFs

Sorry for not being clear, that's not to be installed. Just extract the ZIP,
run your script, and point it to NAPS2.Console.exe in the App subfolder.

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[tickets:#495] https://sourceforge.net/p/naps2/tickets/495/ Merging PDFs

Status: open
Milestone: 5.X
Created: Mon Sep 24, 2018 03:14 PM UTC by Tracy Smith
Last Updated: Mon Sep 24, 2018 04:57 PM UTC
Owner: Ben Olden-Cooligan

Ben, I appreciate the work you've put into slicing and merging files, it's
made NAPS2 useful in several areas for me. However, there's still one
challenge that is less than fully usable. I have a Court application that
combines Juror questionnaires into a collective PDF to give to attorneys.
I've used Acrobat Interop to accomplish this in the past but have moved much
of the scanning functionality to NAPS2. However looping through and
consolidating 200 questionnaires into a single PDF takes seconds in Acrobat
but many minutes (and lots of temp files I've noticed) in NAPS2. My guess is
Acrobat is somehow able to keep the file in memory as it's being built
whereas you're processing and creating a single file at a time and rewriting
the file to disk on every single increment within the 200 files it's looping
through. Any thoughts?

---

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https://sourceforge.net/p/naps2/tickets/495/

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