Debenu Quick PDF Library - PDF SDK Community Forum : Compressings/Compacting PDFs http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 19:33:38 +0000 Wed, 06 May 2015 07:50:23 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=3106 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[Compressings/Compacting PDFs : Bob,Most programs that reduce...]]> http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12477.html#12477 Author: AndrewC
Subject: 3106
Posted: 06 May 15 at 7:50AM

Bob,

Most programs that reduce PDF file sizes concentrate on re-sampling and re-compressing images within the PDF.  This is usually achieved by reducing the colours in the image, using a different image compression such as lossy JPEG and also lowering the DPI by resampling the image.

I don't believe that SetImageResolution will be much use.   To get this working with Debenu Quick PDF Library you will need to extract the larger images, process them to reduce their size and then use something like ReplaceImage to update the image.

I suspect this is a feature currently on the Debenu TODO list.

Other optimisations may include removing unused character from fonts and then re-compressing them or removing unused objects.  Each of these processes is quite complex and time consuming. 

Andrew
]]> Wed, 06 May 2015 07:50:23 +0000 http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12477.html#12477 <![CDATA[Compressings/Compacting PDFs : The size of the scanned image...]]> http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12467.html#12467 Author: erico
Subject: 3106
Posted: 29 Apr 15 at 3:36PM

The size of the scanned image is most closely tied to the dpi resolution of the scanned image. Your best chance there would be to use a lower resolution using SetImageResolution and FitImage as required.

For the other two, without looking at the content, there is really no way to be certain what is increasing the PDF size. It could be almost anything.
]]> Wed, 29 Apr 2015 15:36:19 +0000 http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12467.html#12467 <![CDATA[Compressings/Compacting PDFs : I&#039;ve tried the following...]]> http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12463.html#12463 Author: BobW
Subject: 3106
Posted: 28 Apr 15 at 11:10PM

I've tried the following in a quick program:
TransformFile
LoadFromFile
ReplaceFonts(10)
CompressContent()
CompressImages(1)
CompressFonts()
SaveToFile


Description         Original Size       My Program            SmallPDF[dot]Com result
2 page IRS form      289K                  278K                             99K

Single page             1,128K             1,142K                           558K
scanned image
(made by putting
a form on a copier
that emailed me
the PDF)

1 Page PDF I                 116K               120K                               26K             
created with
QuickPDF

In two cases the resulting file is LARGER than the original!  I tried using each of the functions individually -- TransformFile by itself got the first PDF down to 267K, but none of them really did much at all.

This is going to be a bit of a problem for me because I know I'm going to be asked why I can't do what the free website did.
]]> Tue, 28 Apr 2015 23:10:35 +0000 http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12463.html#12463 <![CDATA[Compressings/Compacting PDFs : TransformFile() may reduce the...]]> http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12455.html#12455 Author: erico
Subject: 3106
Posted: 27 Apr 15 at 3:53PM

TransformFile() may reduce the size of PDFs.

CompressContent(), CompressImages(), CompressFonts() may also help


edit: corrected typo


Edited by erico - 27 Apr 15 at 3:54PM]]> Mon, 27 Apr 2015 15:53:24 +0000 http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12455.html#12455 <![CDATA[Compressings/Compacting PDFs : 1. How many pages contain test...]]> http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12454.html#12454 Author: mLipok
Subject: 3106
Posted: 27 Apr 15 at 2:01PM

1. How many pages contain test document ?
2. What was the initial size of the PDF (in KB) ?
3. What was the size after using this  specified page ?
4. Did you try:
Option 10 in ReplaceFonts - Removes embedded fonts if it matches the 14 std fonts
]]> Mon, 27 Apr 2015 14:01:14 +0000 http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12454.html#12454 <![CDATA[Compressings/Compacting PDFs : I had a request recently to shrink...]]> http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12452.html#12452 Author: BobW
Subject: 3106
Posted: 24 Apr 15 at 10:56PM

I had a request recently to shrink a couple of PDFs.  I created some of them.  Others were created by some other process.  Other than TransformFile, I can't think of any feature that will take a PDF and make it smaller.  I did find a website called smallpdf [dot] com that lets you select a PDF then download the smaller version.  I ran a couple of them through it and they did come back quite a bit smaller.  We're now examining them to see if the quality is acceptable.  I would love to do something like this myself and I know I'm going to be asked to.  Is there a method or feature I'm missing?

Bob]]> Fri, 24 Apr 2015 22:56:54 +0000 http://www.quickpdf.org/forum/compressings-compacting-pdfs_topic3106_post12452.html#12452