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Old 08-27-2007, 08:12 AM   #1
CarlSeiler
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Default Bloat in Acrobat 5.0

I have a paper form that we're trying to convert over to electronic. I just scanned the original and put it into a PDF. It was 176 KB in size. I opened it up in Acrobat 5.x as that's the current full-version we have here at the office. I added 12 fields, using the scanned image as a background. When I saved it, it ballooned to 1,700 KB. It required some editing, so I opened it again, and moved some of the fields around, and saved it. This time it was 1,900 KB. Needed a bit more tweaking, and now it's 2,005K. The last three edits have not added additional information, but were just moving the already existing boxes around and changing their sizes.

I'm kind of in shock at how large this file has gotten considering I thought the original bitmapped scan would be the biggest thing in the file. I thought PDF had built-in compression. I guess I don't understand how Acrobat works in that regard. Each time I open and edit it, it seems to gain 100-200 KB regardless of how minor the edit. Is there any way to prevent it, or force some sort of compression. The intention is that we'll e-mail the form to one of our colleagues, so I want it to be as compact as I can make it.

I ended up getting an outside utility (Free PDF Compressor 1.12) to compress it to 179 KB, and it seems to have all the functionality of my original form. I guess since I have a workaround, I just am just curious and wondering why Acrobat's PDF got so bloated.
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Old 08-27-2007, 11:52 AM   #2
Steve Rindsberg
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The settings you used when creating the PDF from the scan in the first place would have a huge effect on the resulting PDF size.

As to the file increasing in size with each edit, ISTR that you can save to a new filename to force Acrobat to do a bit of "trash collection"; and I think there's a menu option to force the issue as well ... have a look, and if you can't find anything, post back. I don't have Acrobat 5 handy right now but can get to a copy.

   
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Old 08-27-2007, 01:05 PM   #3
CarlSeiler
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Quote:
Originally Posted by Steve Rindsberg View Post
The settings you used when creating the PDF from the scan in the first place would have a huge effect on the resulting PDF size.
I can definitely see how the original scan settings would make a difference, but if the original PDF file with the scan was only 175K, how would editing the file by adding a text field cause the file to blow up so large.

We are using a Canon Image runner 5020 to scan the document, and that's brought into eCopy which exports the bitmap as a PDF. That PDF is 175 KB and is what I edited in Acrobat 5 to start off with.

Quote:
As to the file increasing in size with each edit, ISTR that you can save to a new filename to force Acrobat to do a bit of "trash collection"; and I think there's a menu option to force the issue as well ... have a look, and if you can't find anything, post back. I don't have Acrobat 5 handy right now but can get to a copy.
Here's what seemed to work: Tools|PDF Consultant | Optimize Space. It mentions removing unused links, etc. Of course, I don't have any links, so I have no idea what it was removing, but it did manage to shrink it down to 180 KB with the next save and still keep the form fields.
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Old 08-27-2007, 01:26 PM   #4
Steve Rindsberg
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Ah. Misunderstanding of what "it" was. You wrote:

"I have a paper form that we're trying to convert over to electronic. I just scanned the original and put it into a PDF. It was 176 KB in size."

and I took "it" to mean the scan, not the resulting bitmap. Wrong, Steve. Hence the confusion.

That really IS bizarre then. But at least Optimize Space (yep, that's the one I was thinking of, btw) fixes it up.

   
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Old 09-21-2007, 04:09 AM   #5
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Not sure if it has this feature in Acrobat 5.x, but there could be a "reduce file size" menu option under "File"

I've only really experienced 50% file size reduction at best using this though.
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