Hello,
I am using iText to build PDF files that have other PDF files
embedded in them. These embedded PDF files are basically single page Logos
that are placed at certain locations on the final PDF file. The final PDF
file can contain from 1 to 120 pages. Each of these pages will have the
logo files embedded on them. The location of these files is calculated
based on some data from a database.
The building of these files works out fine, however I notice that the
final PDF filesize is way larger than the sum of the filesizes of all the
embedded PDFs. e.g. I embed 5 PDFs on a page and the total size of all
these PDF files amounts to 330Kb. But, after adding some tables and about
7-8 lines of text, the size of the final PDF comes to around 2020Kb. This
PDF consists of 1 pages, with 5 embedded PDF files and about 7-8 lines of
text. I also embed 1 font into this file, as I am using a custom font for 2
lines of text in the final PDF. The font file is about 107Kb in size. This
still leaves about 1400Kb of excess file size that I cannot explain.
The problem worsens when we start producing 40 page PDF files. One
such file was about 69 Mb in size. This file also used about 500Kb size
worth of embedded PDFs on each page. Which calculates to about 20-25Mb for
the final PDF. I am still unable to explain the excess 50 Mb here. I
shudder to think of the file size when we build PDF files with 60 or 120
pages. The user complains of memory and performance problems when they try
to open and print these files.
Am I missing something here, specifically with embedded PDF files? I
have read that the resultant file size is offset by some degree when PDF
files are embedded into another PDF file. But, I cannot digest the fact
that the offset can be so ridiculous. Which leads me to believe that I am
probably not doing this right. Any pointers in this regard will be highly
appreciated.
Thank you,
Yatin Kareer.
IT Department.
Mohawk Industries Inc.
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