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October 24, 2015
Answered

Electronically signing PDF file increases file size by approximately 3 MB

  • October 24, 2015
  • 4 replies
  • 51086 views

We are using certificates from our Smart Badge to electronically sign PDF documents.  Recently this action is adding ~3 MB to each file for each signature.  This is a recent occurrence.  This did not happen last month.  At that time, you could have several signatures on a 1 page PDF document and the overall file size was very small, like in the 200-300kb size.  What could have been changed and any suggestions on how to reset it? 

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Correct answer

Thanks for the response.  I'm not sure if you fully read my first note.  The increasing the file size is a recent occurrence.  Prior to the past 6 weeks or so, we could sign a PDF document and it did not add 3 MB to the file size.  The file size stayed fairly small.  So this is not a "normal" result.  I have PDF documents which are signed and the size did not increase.  Now when I sign PDF documents, the file size increases dramatically. 

Below is a screen shot of my Preferences Window, showing the Security & Security (Enhanced) options.  As mentioned earlier, there does not appear to be any "tab" under these sections, as per the Adobe X help section.  I don't see any setting to change that could reduce the information for each signature. 

Any sound advice would be appreciated.


I actually found a possible solution:

Edit / Preferences / Signatures

  1. Creation & Appearance:  Uncheck "Include signature's revocation status"
  2. Verification: Uncheck "Require certificate revocation checking to succeed......."

See screen shots below:

Note, this is from Adobe XI and am using certificates from a SmartBadge.  It seems to keep the file size fairly consistent (not dramatically increasing the file size).,

4 replies

Participant
November 16, 2024

It's working, It actually helped me in signing PDF using DSC in low file size.

uddhav tulshibagwale
Participant
November 9, 2022

Thanks solved the problem

 

Participant
October 21, 2020

Have you solved this issue? 

I have the same problem in 2020...

As you said, I unchecked the "signature revocation status" and the file remains light. However, I noticed that in other computers (perhaps with older version of Acrobat) I can have that option checked and still the file doesnt increase the size. So...

 

Participant
March 30, 2021

Buenas tardes. Si. He deseleccionado la opción "signature revocation..." y eliminado la caché y el documento PDF ha mantenido su tamaño. Muchas gracias Isak-Ten..:)

October 24, 2015

Just to clarify, we have Adobe Acrobat XI, version 11.0.12 installed.  I have seen some old postings with recommendations to change some of the settings in Edit/Preferences, but the directions are for Version X and it seems that XI has a different appearance for Preferences (no tabs in some of the sections).

Legend
October 26, 2015

This is normal, by default. You can change settings in a way which makes the signatures not viable in the long term.

Preferences have changed little, and have identical tabs. The trick is that in Acrobat's preferences, the "tabs" is the list running down the left hand side.

Legend
October 26, 2015

I actually found a possible solution:

Edit / Preferences / Signatures

  1. Creation & Appearance:  Uncheck "Include signature's revocation status"
  2. Verification: Uncheck "Require certificate revocation checking to succeed......."

See screen shots below:

Note, this is from Adobe XI and am using certificates from a SmartBadge.  It seems to keep the file size fairly consistent (not dramatically increasing the file size).,


Yes, it is normal. My guess is that this option was off for you but turned on, perhaps by an update. (Older versions of Reader didn't do it). Possibly something else changed causing the need to store a huge certificate chain.

Be sure you understand the consequences of turning this off. I can't explain them in sufficient detail.